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Qin Z, Jiang Q, Zou Y, Chen M, Li J, Li Y, Zhang H. Synthesis of Nanosized γ-Cyclodextrin Metal-Organic Frameworks as Carriers of Limonene for Fresh-Cut Fruit Preservation Based on Polycaprolactone Nanofibers. Small 2024:e2400399. [PMID: 38607266 DOI: 10.1002/smll.202400399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 03/31/2024] [Indexed: 04/13/2024]
Abstract
To address the issue of bacterial growth on fresh-cut fruits, this paper reports the synthesis of nanosized γ-cyclodextrin metal-organic frameworks (CD-MOFs) using an ultrasound-assisted method and their application as carriers of limonene for antibacterial active packaging. The effects of the processing parameters on the morphology and crystallinity of the CD-MOFs are investigated, and the results prove that the addition of methanol is the key to producing nanosized CD-MOFs. The limonene loading content of the nanosized CD-MOFs can reach approximately 170 mg g-1. The sustained-release behaviors of limonene in the CD-MOFs are evaluated. Molecular docking simulations reveal the distribution and binding sites of limonene in the CD-MOFs. CD-MOFs are deposited on the surfaces of polycaprolactone (PCL) nanofibers via an immersion method, and limonene-loaded CD-MOF@PCL nanofibers are prepared. The morphology, crystallinity, thermal stability, mechanical properties, and antibacterial activity of the nanofibers are also studied. The nanofiber film effectively inhibits bacterial growth and prolongs the shelf life of fresh-cut apples. This study provides a novel strategy for developing antibacterial active packaging materials based on CD-MOFs and PCL nanofibers.
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Affiliation(s)
- Zeyu Qin
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
| | - Qinbo Jiang
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
| | - Yucheng Zou
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
| | - Meiyu Chen
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
| | - Jiawen Li
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
| | - Yang Li
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
| | - Hui Zhang
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
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2
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Williams L, Hatton FL, Righetti MC, Mele E. Investigating How the Properties of Electrospun Poly(lactic acid) Fibres Loaded with the Essential Oil Limonene Evolve over Time under Different Storage Conditions. Polymers (Basel) 2024; 16:1005. [PMID: 38611263 PMCID: PMC11013927 DOI: 10.3390/polym16071005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 03/19/2024] [Accepted: 03/29/2024] [Indexed: 04/14/2024] Open
Abstract
Essential oils have been identified as effective natural compounds to prevent bacterial infections and thus are widely proposed as bioactive agents for biomedical applications. Across the literature, various essential oils have been incorporated into electrospun fibres to produce materials with, among others, antibacterial, anti-inflammatory and antioxidant activity. However, limited research has been conducted so far on the effect of these chemical products on the physical characteristics of the resulting composite fibres for extended periods of time. Within this work, electrospun fibres of poly(lactic acid) (PLA) were loaded with the essential oil limonene, and the impact of storage conditions and duration (up to 12 weeks) on the thermal degradation, glass transition temperature and mechanical response of the fibrous mats were investigated. It was found that the concentration of the encapsulated limonene changed over time and thus the properties of the PLA-limonene fibres evolved, particularly in the first two weeks of storage (independently from storage conditions). The amount of limonene retained within the fibres, even 4 weeks after fibre generation, was effective to successfully inhibit the growth of model microorganisms Escherichia coli, Staphylococcus aureus and Bacillus subtilis. The results of this work demonstrate the importance of evaluating physical properties during the ageing of electrospun fibres encapsulating essential oils, in order to predict performance modification when the composite fibres are used as constituents of medical devices.
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Affiliation(s)
- Leah Williams
- Department of Materials, Loughborough University, Loughborough LE11 3TU, UK;
| | - Fiona L. Hatton
- Department of Materials, Loughborough University, Loughborough LE11 3TU, UK;
| | - Maria Cristina Righetti
- National Research Council-Institute for Chemical and Physical Processes (CNR-IPCF), Via Moruzzi 1, 56124 Pisa, Italy;
| | - Elisa Mele
- Department of Materials, Loughborough University, Loughborough LE11 3TU, UK;
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3
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Rydel-Ciszek K. DFT Studies of the Activity and Reactivity of Limonene in Comparison with Selected Monoterpenes. Molecules 2024; 29:1579. [PMID: 38611858 PMCID: PMC11013946 DOI: 10.3390/molecules29071579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 03/27/2024] [Accepted: 03/31/2024] [Indexed: 04/14/2024] Open
Abstract
Nowadays, the effective processing of natural monoterpenes that constitute renewable biomass found in post-production waste into products that are starting materials for the synthesis of valuable compounds is a way to ensure independence from non-renewable fossil fuels and can contribute to reducing global carbon dioxide emissions. The presented research aims to determine, based on DFT calculations, the activity and reactivity of limonene, an organic substrate used in previous preparative analyses, in comparison to selected monoterpenes such as cymene, pinene, thymol, and menthol. The influence of the solvent model was also checked, and the bonds most susceptible to reaction were determined in the examined compounds. With regard to EHOMO, it was found that limonene reacts more easily than cymene or menthol but with more difficultly than thymol and pienene. The analysis of the global chemical reactivity descriptors "locates" the reactivity of limonene in the middle of the studied monoterpenes. It was observed that, among the tested compounds, the most reactive compound is thymol, while the least reactive is menthol. The demonstrated results can be a reference point for experimental work carried out using the discussed compounds, to focus research on those with the highest reactivity.
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Affiliation(s)
- Katarzyna Rydel-Ciszek
- Department of Physical Chemistry, Faculty of Chemistry, Rzeszów University of Technology, Al. Powstańców Warszawy 6, 35-959 Rzeszów, Poland
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Vincent M, Blanc-Garin V, Chenebault C, Cirimele M, Farci S, Garcia-Alles LF, Cassier-Chauvat C, Chauvat F. Impact of Carbon Fixation, Distribution and Storage on the Production of Farnesene and Limonene in Synechocystis PCC 6803 and Synechococcus PCC 7002. Int J Mol Sci 2024; 25:3827. [PMID: 38612633 PMCID: PMC11012175 DOI: 10.3390/ijms25073827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 03/04/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024] Open
Abstract
Terpenes are high-value chemicals which can be produced by engineered cyanobacteria from sustainable resources, solar energy, water and CO2. We previously reported that the euryhaline unicellular cyanobacteria Synechocystis sp. PCC 6803 (S.6803) and Synechococcus sp. PCC 7002 (S.7002) produce farnesene and limonene, respectively, more efficiently than other terpenes. In the present study, we attempted to enhance farnesene production in S.6803 and limonene production in S.7002. Practically, we tested the influence of key cyanobacterial enzymes acting in carbon fixation (RubisCO, PRK, CcmK3 and CcmK4), utilization (CrtE, CrtR and CruF) and storage (PhaA and PhaB) on terpene production in S.6803, and we compared some of the findings with the data obtained in S.7002. We report that the overproduction of RubisCO from S.7002 and PRK from Cyanothece sp. PCC 7425 increased farnesene production in S.6803, but not limonene production in S.7002. The overexpression of the crtE genes (synthesis of terpene precursors) from S.6803 or S.7002 did not increase farnesene production in S.6803. In contrast, the overexpression of the crtE gene from S.6803, but not S.7002, increased farnesene production in S.7002, emphasizing the physiological difference between these two model cyanobacteria. Furthermore, the deletion of the crtR and cruF genes (carotenoid synthesis) and phaAB genes (carbon storage) did not increase the production of farnesene in S.6803. Finally, as a containment strategy of genetically modified strains of S.6803, we report that the deletion of the ccmK3K4 genes (carboxysome for CO2 fixation) did not affect the production of limonene, but decreased the production of farnesene in S.6803.
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Affiliation(s)
- Marine Vincent
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, 91198 Gif-sur-Yvette, France; (M.V.); (V.B.-G.); (C.C.); (M.C.); (S.F.); (C.C.-C.)
| | - Victoire Blanc-Garin
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, 91198 Gif-sur-Yvette, France; (M.V.); (V.B.-G.); (C.C.); (M.C.); (S.F.); (C.C.-C.)
| | - Célia Chenebault
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, 91198 Gif-sur-Yvette, France; (M.V.); (V.B.-G.); (C.C.); (M.C.); (S.F.); (C.C.-C.)
| | - Mattia Cirimele
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, 91198 Gif-sur-Yvette, France; (M.V.); (V.B.-G.); (C.C.); (M.C.); (S.F.); (C.C.-C.)
- Université Paris-Saclay, ENS Paris-Saclay, 91190 Gif-sur-Yvette, France
| | - Sandrine Farci
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, 91198 Gif-sur-Yvette, France; (M.V.); (V.B.-G.); (C.C.); (M.C.); (S.F.); (C.C.-C.)
| | - Luis Fernando Garcia-Alles
- Toulouse Biotechnology Institute, Université de Toulouse, CNRS, INRAE, INSA, 135 Avenue de Rangueil, 31077 Toulouse, France;
| | - Corinne Cassier-Chauvat
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, 91198 Gif-sur-Yvette, France; (M.V.); (V.B.-G.); (C.C.); (M.C.); (S.F.); (C.C.-C.)
| | - Franck Chauvat
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, 91198 Gif-sur-Yvette, France; (M.V.); (V.B.-G.); (C.C.); (M.C.); (S.F.); (C.C.-C.)
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Kim H, Kim MH, Choi UL, Chung MS, Yun CH, Shim Y, Oh J, Lee S, Lee GW. Molecular and Phenotypic Investigation on Antibacterial Activities of Limonene Isomers and Its Oxidation Derivative against Xanthomonas oryzae pv. oryzae. J Microbiol Biotechnol 2024; 34:562-569. [PMID: 38247219 PMCID: PMC11016764 DOI: 10.4014/jmb.2311.11016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 01/02/2024] [Accepted: 01/05/2024] [Indexed: 01/23/2024]
Abstract
Xanthomonas oryzae pv. oryzae (Xoo) causes a devastating bacterial leaf blight in rice. Here, the antimicrobial effects of D-limonene, L-limonene, and its oxidative derivative carveol against Xoo were investigated. We revealed that carveol treatment at ≥ 0.1 mM in liquid culture resulted in significant decrease in Xoo growth rate (> 40%) in a concentration-dependent manner, and over 1 mM, no growth was observed. The treatment with D-limonene and L-limonene also inhibited the Xoo growth but to a lesser extent compared to carveol. These results were further elaborated with the assays of motility, biofilm formation and xanthomonadin production. The carveol treatment over 1 mM caused no motilities, basal level of biofilm formation (< 10%), and significantly reduced xanthomonadin production. The biofilm formation after the treatment with two limonene isomers was decreased in a concentration-dependent manner, but the degree of the effect was not comparable to carveol. In addition, there was negligible effect on the xanthomonadin production mediated by the treatment of two limonene isomers. Field emission-scanning electron microscope (FE-SEM) unveiled that all three compounds used in this study cause severe ultrastructural morphological changes in Xoo cells, showing shrinking, shriveling, and holes on their surface. Moreover, quantitative real-time PCR revealed that carveol and D-limonene treatment significantly down-regulated the expression levels of genes involved in virulence and biofilm formation of Xoo, but not with L-limonene. Together, we suggest that limonenes and carveol will be the candidates of interest in the development of biological pesticides.
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Affiliation(s)
- Hyeonbin Kim
- Green-Bio Division, Jeonju AgroBio-Materials Institute, Jeonju 54810, Republic of Korea
| | - Mi Hee Kim
- Green-Bio Division, Jeonju AgroBio-Materials Institute, Jeonju 54810, Republic of Korea
| | - Ui-Lim Choi
- Green-Bio Division, Jeonju AgroBio-Materials Institute, Jeonju 54810, Republic of Korea
| | - Moon-Soo Chung
- Division of Radiation Biotechnology, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup 56212, Republic of Korea
| | - Chul-Ho Yun
- School of Biological Sciences and Technology, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Youngkun Shim
- Microzyme Co., Ltd. Research and Development Department, Damyang-gun, Jeollanam-do 57385, Republic of Korea
| | - Jaejun Oh
- Microzyme Co., Ltd. Research and Development Department, Damyang-gun, Jeollanam-do 57385, Republic of Korea
| | - Sungbeom Lee
- Division of Radiation Biotechnology, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup 56212, Republic of Korea
- Department of Radiation Science and Technology, University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Gun Woong Lee
- Green-Bio Division, Jeonju AgroBio-Materials Institute, Jeonju 54810, Republic of Korea
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Louail Z, Djemouai N, Bouti K, Tounsi H, Kameli A. High perillaldehyde content from essential oils of Ammodaucus leucotrichus subsp . leucotrichus Cosson & Durieu fruits from Aougrout (Algeria). Nat Prod Res 2024:1-6. [PMID: 38501744 DOI: 10.1080/14786419.2024.2331043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 03/03/2024] [Indexed: 03/20/2024]
Abstract
The chemical composition of the essential oil produced by hydrodistillation from the fruits of Ammodaucus leucotrichus subsp. leucotrichus Cosson & Durieu collected from southern Algeria, precisely in Aougrout District (Adrar Province), was determined by GC-MS analysis. Nineteen (19) compounds, representing 85.71% of the essential oil, were found. The essential oil contained a high percentage of perillaldehyde (80.69%). This composition is compared to numerous reported essential oils of A. leucotrichus subsp. leucotrichus fruits that are found across Algeria and Morocco in various regions. The major component perillaldehyde has drawn a lot of interest in recent years due to its notable antifungal and broader antimicrobial properties, as well as its potential advantages for human health. Thus, the studied plant represents a source of this component that should be used as food additives, perfume ingredients, and in formulations of traditional medicine.
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Affiliation(s)
- Zineb Louail
- Laboratoire d'ethnobotanique et substances naturelles, Ecole Normale Supérieure de Kouba, Kouba, Algeria
| | - Nadjette Djemouai
- Département de Biologie, Faculté des Sciences de la Nature et de la Vie et Sciences de la Terre, Université de Ghardaia, Ghardaïa, Algeria
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Kouba, Algeria
| | - Karima Bouti
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Kouba, Algeria
| | - Hassina Tounsi
- Laboratoire d'ethnobotanique et substances naturelles, Ecole Normale Supérieure de Kouba, Kouba, Algeria
| | - Abdelkrim Kameli
- Laboratoire d'ethnobotanique et substances naturelles, Ecole Normale Supérieure de Kouba, Kouba, Algeria
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7
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Zhu CS, Trickett J, O'Brien J, Cruz PD. When handed lemons, beware of squeezing them. Contact Dermatitis 2024; 90:327-328. [PMID: 38123172 DOI: 10.1111/cod.14486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/04/2023] [Accepted: 12/07/2023] [Indexed: 12/23/2023]
Affiliation(s)
- Caroline S Zhu
- Department of Dermatology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - John Trickett
- Department of Allergy & Immunology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Jack O'Brien
- Department of Dermatology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Ponciano D Cruz
- Department of Allergy & Immunology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
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Adwa U, Antelmi A, Sukakul T, Dahlin J, Bruze M, Svedman C. Oral lichenoid lesions in two snuff users with contact allergy to carvone. Contact Dermatitis 2024; 90:74-78. [PMID: 37915267 DOI: 10.1111/cod.14448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 09/01/2023] [Accepted: 10/12/2023] [Indexed: 11/03/2023]
Abstract
BACKGROUND Contact allergy to the mint-tasting flavour carvone has been observed in patients with oral lichenoid lesions (OLL). Mint-flavoured products such as toothpaste frequently contain carvone. Snuff is a smokeless tobacco product that is chewed or placed in the mouth rather than smoked. In Sweden, the use of snuff and its flavoured versions is extremely common. OBJECTIVES To investigate whether the consumption of mint-flavoured snuff is associated with contact allergy to carvone and subsequently plays a role in the aetiology of OLL. METHODS Regarding the two patients, patch testing with snuff pouches was performed. High-performance liquid chromatography and gas chromatography-mass spectrometry analysis were used for identification of carvone in different snuff samples. RESULTS Two patients with OLL were contacted allergic to carvone when patch tested. Both were using mint-flavoured snuffs several hours a day for many years. One patient was contacted allergic to the snuff pouch tested as is. Carvone was detected in the snuff samples of both patients. CONCLUSIONS The patients were recommended to avoid the use of mint-flavoured snuffs, toothpaste and foodstuffs. At follow-up 3 months later, the patients had a dramatic clinical improvement of the OLL and oral symptoms. Exposure to mint-flavoured snuffs can be overlooked as a possible aggravating/provoking factor in OLL.
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Affiliation(s)
- Usamah Adwa
- Department of Occupational and Environmental Dermatology, Skåne University Hospital, Malmo, Sweden
- Department of Dermatology, Helsingborg Hospital, Helsingborg, Sweden
| | - Annarita Antelmi
- Department of Occupational and Environmental Dermatology, Skåne University Hospital, Malmo, Sweden
| | - Thanisorn Sukakul
- Department of Occupational and Environmental Dermatology, Skåne University Hospital, Malmo, Sweden
| | - Jakob Dahlin
- Department of Occupational and Environmental Dermatology, Skåne University Hospital, Malmo, Sweden
| | - Magnus Bruze
- Department of Occupational and Environmental Dermatology, Skåne University Hospital, Malmo, Sweden
| | - Cecilia Svedman
- Department of Occupational and Environmental Dermatology, Skåne University Hospital, Malmo, Sweden
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Deeleepojananan C, Grassian VH. Gas-Phase and Surface-Initiated Reactions of Household Bleach and Terpene-Containing Cleaning Products Yield Chlorination and Oxidation Products Adsorbed onto Indoor Relevant Surfaces. Environ Sci Technol 2023; 57:20699-20707. [PMID: 38010858 PMCID: PMC10720375 DOI: 10.1021/acs.est.3c06656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 11/01/2023] [Accepted: 11/02/2023] [Indexed: 11/29/2023]
Abstract
The use of household bleach cleaning products results in emissions of highly oxidative gaseous species, such as hypochlorous acid (HOCl) and chlorine (Cl2). These species readily react with volatile organic compounds (VOCs), such as limonene, one of the most abundant compounds found in indoor enviroments. In this study, reactions of HOCl/Cl2 with limonene in the gas phase and on indoor relevant surfaces were investigated. Using an environmental Teflon chamber, we show that silica (SiO2), a proxy for window glass, and rutile (TiO2), a component of paint and self-cleaning surfaces, act as a reservoir for adsorption of gas-phase products formed between HOCl/Cl2 and limonene. Furthermore, high-resolution mass spectrometry (HRMS) shows that the gas-phase reaction products of HOCl/Cl2 and limonene readily adsorb on both SiO2 and TiO2. Surface-mediated reactions can also occur, leading to the formation of new chlorine- and oxygen-containing products. Transmission Fourier-transform infrared (FTIR) spectroscopy of adsorption and desorption of bleach and terpene oxidation products indicates that these chlorine- and oxygen-containing products strongly adsorb on both SiO2 and TiO2 surfaces for days, providing potential sources of human exposure and sinks for additional heterogeneous reactions.
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Affiliation(s)
- Cholaphan Deeleepojananan
- Department of Chemistry and
Biochemistry, University of California San
Diego, La Jolla, California 92093, United States
| | - Vicki H. Grassian
- Department of Chemistry and
Biochemistry, University of California San
Diego, La Jolla, California 92093, United States
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Ghani A, Taghvaeefard N, Hosseinifarahi M, Dakhlaoui S, Msaada K. Essential oil composition and antioxidant activity of citron fruit ( Citrus medica var. macrocarpa Risso.) peel as relation to ripening stages. Int J Environ Health Res 2023; 33:1278-1288. [PMID: 35723174 DOI: 10.1080/09603123.2022.2084514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 05/25/2022] [Indexed: 06/15/2023]
Abstract
Stages of maturity have decisive roles in determining the quality and quantity of essential oil (EO). In this regard, EO yield and composition and their antioxidant activity of citron fruit at four fruit maturity stages, i.e. the green mature (GM), intermediate (INT), yellow ripe (MAT) and overripe stage (OR) were studied. Obtained results showed significant effect of fruit maturity on most measured properties. The concentration of EO varied between 0.60 and 0.77% (v/w). The highest amount of limonene was 89.39% related to GM stage. The limonene decreased significantly during maturity. The highest antioxidant activity (76.08%) was measured at the OR stage, which is probably due to the presence of specific compounds in the EO and their synergistic effects. The phytochemical behaviors of this citron variety were different as relation to stages of fruit maturity. We can determine the ideal harvest period for maximum bioactive substances by recognizing these actions.
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Affiliation(s)
- Askar Ghani
- Department of Horticultural Science, Faculty of Agriculture, Jahrom University, Jahrom, Iran
| | - Nehleh Taghvaeefard
- Department of Horticultural Science, Yasuj Branch, Islamic Azad University, Yasuj, Iran
| | - Mehdi Hosseinifarahi
- Department of Horticultural Science, Yasuj Branch, Islamic Azad University, Yasuj, Iran
- Sustainable Agriculture and Food Security Research Group, Yasuj Branch, Islamic Azad University, Yasuj, Iran
| | - Sarra Dakhlaoui
- Laboratory of Aromatic and Medicinal Plants, Biotechnology Center in Borj Cedria Technopole, Hammam-Lif, Tunisia
| | - Kamel Msaada
- Laboratory of Aromatic and Medicinal Plants, Biotechnology Center in Borj Cedria Technopole, Hammam-Lif, Tunisia
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11
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Brenner DJ. The public-health significance of far-UVC-induced indoor ozone and its associated secondary chemistry. Photochem Photobiol 2023. [PMID: 38037431 DOI: 10.1111/php.13892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 11/14/2023] [Accepted: 11/15/2023] [Indexed: 12/02/2023]
Abstract
There has been much recent interest in whole-room far-UVC (wavelength around 222 nm) to markedly and safely reduce overall levels of airborne pathogens in occupied indoor locations. Far-UVC light produces very low levels of ozone-in real-world scenarios induced ozone levels of less than 10 ppb, and much less in moderately or well-ventilated rooms compliant with US far-UVC dose recommendations, and very much less in rooms compliant with international far-UVC dose standards. At these very low ozone levels, there is no epidemiological evidence of increased health risks from any of the very large outdoor ozone studies, whether from ozone alone or from ozone plus associated pollutants. Indoors, at the low ozone concentrations of relevance here, ozone does not react rapidly enough with preexisting airborne volatile organic compounds to compete with even extremely low levels of room ventilation, so significant ozone-induced ultrafine particle production is very unlikely. Direct measurements in real-life room scenarios are consistent with these conclusions. A potential exception is the cleaning material limonene, which has an unusually high ozone interaction cross-section; in the far-UVC context, turning off far-UVC lights during cleaning with limonene products would be reasonable.
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Affiliation(s)
- David J Brenner
- Center for Radiological Research, Columbia University, New York, New York, USA
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12
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Huang Y, Yang H, Shen W, Xia Y, Cao Y, Chen X. [Production of limonene and its derivative in Saccharomyces cerevisiae via metabolic engineering]. Sheng Wu Gong Cheng Xue Bao 2023; 39:4647-4662. [PMID: 38013190 DOI: 10.13345/j.cjb.230181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Limonene and its derivative perillic acid are widely used in food, cosmetics, health products, medicine and other industries as important bioactive natural products. However, inefficient plant extraction and high energy-consuming chemical synthesis hamper the industrial production of limonene and perillic acid. In this study, limonene synthase from Mentha spicata was expressed in Saccharomyces cerevisiae by peroxisome compartmentalization, and the yield of limonene was 0.038 mg/L. The genes involved in limonene synthesis, ERG10, ERG13, tHMGR, ERG12, ERG8, IDI1, MVD1, ERG20ww and tLS, were step-wise expressed via modular engineering to study their effects on limonene yield. The yield of limonene increased to 1.14 mg/L by increasing the precursor module. Using the plasmid with high copy number to express the above key genes, the yield of limonene significantly increased up to 86.74 mg/L, which was 4 337 times higher than that of the original strain. Using the limonene-producing strain as the starting strain, the production of perillic acid was successfully achieved by expressing cytochrome P450 enzyme gene from Salvia miltiorrhiza, and the yield reached 4.42 mg/L. The results may facilitate the construction of cell factory with high yield of monoterpene products by S. cerevisiae.
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Affiliation(s)
- Yao Huang
- School of Biotechnology, Jiangnan University, Wuxi 214122, Jiangsu, China
| | - Haiquan Yang
- School of Biotechnology, Jiangnan University, Wuxi 214122, Jiangsu, China
| | - Wei Shen
- School of Biotechnology, Jiangnan University, Wuxi 214122, Jiangsu, China
| | - Yuanyuan Xia
- School of Biotechnology, Jiangnan University, Wuxi 214122, Jiangsu, China
| | - Yu Cao
- School of Biotechnology, Jiangnan University, Wuxi 214122, Jiangsu, China
| | - Xianzhong Chen
- School of Biotechnology, Jiangnan University, Wuxi 214122, Jiangsu, China
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Badalamenti N, Fontana G, Bruno M, Ilardi V. Centaurea polyacantha and C. maroccana: the chemical composition of the aerial parts essential oils of these Centaurea species (Asteraceae) collected in Morocco. Nat Prod Res 2023:1-10. [PMID: 37933803 DOI: 10.1080/14786419.2023.2278757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 10/24/2023] [Indexed: 11/08/2023]
Abstract
In the present study, the chemical composition of the essential oil from the aerial parts of two Centaurea species not previously investigated, C. polyacantha Willd. (sect. Seridia, Asteraceae) and C. maroccana Ball. (sect. Calcitrapa, Asteraceae), collected in Morocco, was evaluated by GC-MS. The main components of the essential oil of the first one were limonene (18.2%), β-bisabolene (11.5%), (Z)-β-farnesene (8.6%), and spathulenol (8.3%), whereas the C. maroccana essential oil, practically devoid of terpenoids, was shown to be rich in some unusual Centaurea metabolites: 1-hexadecanol (24.9%), docosane (23.7%), and 1-octadecanol (19.5%). Furthermore, a complete literature review on the composition of the essential oils of all the other taxa of Centaurea, belonging to sections Seridia and Calcitrapa, studied so far, was performed.
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Affiliation(s)
- Natale Badalamenti
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale delle Scienze, Building 17, Palermo, Italy
- NBFC, National Biodiversity Future Center, Palermo, Italy
| | - Gianfranco Fontana
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale delle Scienze, Building 17, Palermo, Italy
- NBFC, National Biodiversity Future Center, Palermo, Italy
| | - Maurizio Bruno
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale delle Scienze, Building 17, Palermo, Italy
- NBFC, National Biodiversity Future Center, Palermo, Italy
- Centro Interdipartimentale di Ricerca "Riutilizzo bio-based degli scarti da matrici agroalimentari" (RIVIVE), University of Palermo, Palermo, Italy
| | - Vincenzo Ilardi
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale delle Scienze, Building 17, Palermo, Italy
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Septama AW, Yuandani Y, Khairunnisa NA, Nasution HR, Utami DS, Kristiana R, Jantan I. Antibacterial, bacteriolytic, antibiofilm, and synergistic effects of the peel oils of Citrus microcarpa and Citrus x amblycarpa with tetracycline against foodborne Escherichia coli. Lett Appl Microbiol 2023; 76:ovad126. [PMID: 37898554 DOI: 10.1093/lambio/ovad126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 10/19/2023] [Accepted: 10/27/2023] [Indexed: 10/30/2023]
Abstract
Citrus essential oils (EOs) have shown significant antibacterial activity. The present study was undertaken to evaluate the antibacterial activity of the peel oils of Citrus microcarpa and C. x amblycarpa against Escherichia coli. The minimum inhibition concentration (MIC) was determined by using the broth microdilution assay. The checkerboard method was used to identify synergistic effects of the EOs with tetracycline, while bacteriolysis was assessed by calculating the optical density of the bacterial supernatant, crystal violet assay was used to assess their antibiofilm. Ethidium bromide accumulation test was employed to assess efflux pump inhibition. Electron microscope analysis was performed to observe its morphological changes. The EOs of C. microcarpa and C. x amblycarpa were found to contain D-limonene major compound at 55.78% and 46.7%, respectively. Citrus microcarpa EOs exhibited moderate antibacterial against E. coli with a MIC value of 200 μg/mL. The combination of C. microcarpa oil (7.8 μg/mL) and tetracycline (62.5 μg/mL) exhibited a synergy with FICI of 0.5. This combination inhibited biofilm formation and disrupt bacterial cell membranes. Citrus microcarpa EOs blocked the efflux pumps in E. coli. Citrus microcarpa EOs demonstrated promising antibacterial activity, which can be further explored for the development of drugs to combat E. coli.
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Affiliation(s)
- Abdi W Septama
- Research Center for Pharmaceutical Ingredient and Traditional Medicine, National Research and Innovation Agency (BRIN), Kawasan PUSPIPTEK Serpong, Tangerang Selatan, Banten 15314, Indonesia
| | - Yuandani Yuandani
- Department of Pharmacology, Faculty of Pharmacy, Universitas Sumatera Utara, Medan, Indonesia
| | - Nur A Khairunnisa
- Department of Pharmacology, Faculty of Pharmacy, Universitas Sumatera Utara, Medan, Indonesia
| | - Halimah R Nasution
- Department of Pharmacology, Faculty of Pharmacy, Universitas Sumatera Utara, Medan, Indonesia
| | - Dinda S Utami
- Department of Pharmacology, Faculty of Pharmacy, Universitas Sumatera Utara, Medan, Indonesia
| | - Rhesi Kristiana
- Marine Education and Research Organisation (MERO) Foundation. Br. Dinas Muntig, Kara 80853ngasem, Bali , Indonesia
| | - Ibrahim Jantan
- Institute of Systems Biology (INBIOSIS), Universiti Kebangsaan Malaysia, Bangi, Malaysia
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Christofoli M, da Silva WJ, da Silva NF, Bonifácio NP, Souza CS, Silva FG, Pereira PS, Minafra CS. Diet of Broilers with Essential Oil from Citrus sinensis and Xylopia aromatica Fruits. Animals (Basel) 2023; 13:3326. [PMID: 37958081 PMCID: PMC10647859 DOI: 10.3390/ani13213326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/25/2023] [Accepted: 10/03/2023] [Indexed: 11/15/2023] Open
Abstract
This study aimed to evaluate the effects of essential oils from the fruits of Citrus sinensis and Xylopia aromatica, included in broiler feed, on blood parameters, the biometrics of digestive organs, bone analyses, and the biochemical profiles of the viscera, as well as the histomorphometry of the small intestine. In this study, 180 one-day-old male chicks of the Cobb 500 strain were fed a corn and soybean meal over three treatments and six replications, and the experimental design was completely randomized. The data were subjected to an analysis of variance and a Tukey test at a 5% significance level. The effect of the experimental diets on performance, blood parameters, biometrics of the digestive organs, bone analysis, and biochemical profiles of the viscera, as well as the histomorphometry of the small intestine, were evaluated. The compounds identified in the essential oil of X. aromatica were sylvestrene, α-pinene, and β-pinene, while in C. sinensis they were limonene and myrcene. The essential oils of C. sinensis and X. aromatica had no significant effect on performance at 14 days. The effects of the presence of the essential oils of C. sinensis and X. aromatica on the response were beneficial: there were reductions in liver lipids, cholesterol, and triglycerides, and in the depths of the crypts in the jejunum of chickens. So, the essential oils from the fruits of C. sinensis and X. aromatica can be used in broiler chickens to improve the lipid profiles of birds without affecting their performance.
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Affiliation(s)
- Marcela Christofoli
- Goiano Federal Institute of Education, Science and Technology (Federal Institute Goiano–IF Goiano), Rio Verde 75901-970, GO, Brazil; (M.C.); (N.F.d.S.); (N.P.B.); (F.G.S.); (P.S.P.)
| | | | - Nathan Ferreira da Silva
- Goiano Federal Institute of Education, Science and Technology (Federal Institute Goiano–IF Goiano), Rio Verde 75901-970, GO, Brazil; (M.C.); (N.F.d.S.); (N.P.B.); (F.G.S.); (P.S.P.)
| | - Nadielli Pereira Bonifácio
- Goiano Federal Institute of Education, Science and Technology (Federal Institute Goiano–IF Goiano), Rio Verde 75901-970, GO, Brazil; (M.C.); (N.F.d.S.); (N.P.B.); (F.G.S.); (P.S.P.)
| | - Christiane Silva Souza
- Institute of Animal Science, Federal Rural University of Rio de Janeiro, Rio de Janeiro 23897-000, RJ, Brazil;
| | - Fabiano Guimarães Silva
- Goiano Federal Institute of Education, Science and Technology (Federal Institute Goiano–IF Goiano), Rio Verde 75901-970, GO, Brazil; (M.C.); (N.F.d.S.); (N.P.B.); (F.G.S.); (P.S.P.)
| | - Paulo Sérgio Pereira
- Goiano Federal Institute of Education, Science and Technology (Federal Institute Goiano–IF Goiano), Rio Verde 75901-970, GO, Brazil; (M.C.); (N.F.d.S.); (N.P.B.); (F.G.S.); (P.S.P.)
| | - Cibele Silva Minafra
- Goiano Federal Institute of Education, Science and Technology (Federal Institute Goiano–IF Goiano), Rio Verde 75901-970, GO, Brazil; (M.C.); (N.F.d.S.); (N.P.B.); (F.G.S.); (P.S.P.)
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Da Silva EG, Finamor IA, Bressan CA, Schoenau W, Vencato MDS, Pavanato MA, Cargnelutti JF, Da Costa ST, Antoniazzi AQ, Baldisserotto B. Dietary Supplementation with R-(+)- Limonene Improves Growth, Metabolism, Stress, and Antioxidant Responses of Silver Catfish Uninfected and Infected with Aeromonas hydrophila. Animals (Basel) 2023; 13:3307. [PMID: 37958062 PMCID: PMC10650795 DOI: 10.3390/ani13213307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023] Open
Abstract
R-(+)-limonene is a monoterpene from plants of the genus Citrus with diverse biological properties. This research evaluated the effects of dietary supplementation with R-(+)-limonene on growth, metabolic parameters in plasma and liver, and the antioxidant and stress responses in silver catfish, Rhamdia quelen, challenged or not with Aeromonas hydrophila. Fish were fed for 67 days with different doses of R-(+)-limonene in the diet (control 0.0, L0.5, L1.0, and L2.0 mL/kg of diet). On the 60th day, a challenge with A. hydrophila was performed. R-(+)-limonene in the diet potentiated the productive performance of the fish. The metabolic and antioxidant responses indicate that R-(+)-limonene did not harm the health of the animals and made them more resistant to the bacterial challenge. Histological findings showed the hepatoprotective effect of dietary R-(+)-limonene against A. hydrophila. Igf1 mRNA levels were upregulated in the liver of fish fed with an L2.0 diet but downregulated with bacterial challenge. The expression levels of crh mRNA were higher in the brains of fish fed with the L2.0 diet. However, the L2.0 diet downregulated crh and hspa12a mRNA expression in the brains of infected fish. In conclusion, the results indicated that R-(+)-limonene can be considered a good dietary supplement for silver catfish.
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Affiliation(s)
- Elisia Gomes Da Silva
- Department of Physiology and Pharmacology, Universidade Federal de Santa Maria, Santa Maria 97105-900, RS, Brazil; (E.G.D.S.); (I.A.F.); (C.A.B.); (W.S.); (M.A.P.); (A.Q.A.)
| | - Isabela Andres Finamor
- Department of Physiology and Pharmacology, Universidade Federal de Santa Maria, Santa Maria 97105-900, RS, Brazil; (E.G.D.S.); (I.A.F.); (C.A.B.); (W.S.); (M.A.P.); (A.Q.A.)
| | - Caroline Azzolin Bressan
- Department of Physiology and Pharmacology, Universidade Federal de Santa Maria, Santa Maria 97105-900, RS, Brazil; (E.G.D.S.); (I.A.F.); (C.A.B.); (W.S.); (M.A.P.); (A.Q.A.)
| | - William Schoenau
- Department of Physiology and Pharmacology, Universidade Federal de Santa Maria, Santa Maria 97105-900, RS, Brazil; (E.G.D.S.); (I.A.F.); (C.A.B.); (W.S.); (M.A.P.); (A.Q.A.)
| | - Marina De Souza Vencato
- Department of Morphology, Universidade Federal de Santa Maria, Santa Maria 97105-900, RS, Brazil; (M.D.S.V.); (S.T.D.C.)
| | - Maria Amália Pavanato
- Department of Physiology and Pharmacology, Universidade Federal de Santa Maria, Santa Maria 97105-900, RS, Brazil; (E.G.D.S.); (I.A.F.); (C.A.B.); (W.S.); (M.A.P.); (A.Q.A.)
| | - Juliana Felipetto Cargnelutti
- Department of Preventive Veterinary Medicine, Universidade Federal de Santa Maria, Santa Maria 97105-900, RS, Brazil;
| | - Sílvio Teixeira Da Costa
- Department of Morphology, Universidade Federal de Santa Maria, Santa Maria 97105-900, RS, Brazil; (M.D.S.V.); (S.T.D.C.)
| | - Alfredo Quites Antoniazzi
- Department of Physiology and Pharmacology, Universidade Federal de Santa Maria, Santa Maria 97105-900, RS, Brazil; (E.G.D.S.); (I.A.F.); (C.A.B.); (W.S.); (M.A.P.); (A.Q.A.)
| | - Bernardo Baldisserotto
- Department of Physiology and Pharmacology, Universidade Federal de Santa Maria, Santa Maria 97105-900, RS, Brazil; (E.G.D.S.); (I.A.F.); (C.A.B.); (W.S.); (M.A.P.); (A.Q.A.)
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Garcia Pinto AH, Geng-Vivanco R, Pires-de-Souza FDCP. Effect of limonene associated with bioactive glass-ceramic on dentin/adhesive interface. Eur J Oral Sci 2023; 131:e12947. [PMID: 37501189 DOI: 10.1111/eos.12947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 07/15/2023] [Indexed: 07/29/2023]
Abstract
This study evaluated the effect of pretreatment with limonene and/or biosilicate on the bond strength of a universal adhesive system in self-etch mode to dentin. Occlusal cavities were prepared in 80 human molars and the teeth were randomly allocated to one of four groups (n = 20), according to the pretreatment regimens applied before the adhesive. The pretreatments were (i) Control, no pretreatment, (ii) LIM, 0.5% limonene; (iii) Bio, 10% biosilicate; and (iv) LIMBio, LIM + Bio. After adhesive application and restoration, the specimens were sectioned into sticks, separated, and stored in distilled water at 37°C for 24 h or 6 months. Microtensile bond strength test was carried out and measurements were compared across pretreatment groups and storage times. Fracture patterns and adhesive interfaces were observed. Loss of dry mass was calculated (n = 10). There was no statistically significant difference in the bond strength between the groups and the most prevalent fracture pattern was the non-adhesive. LIM and LIMBio resulted in more open dentinal tubules. LIM and Bio, whether separate or combined, showed particles of those substances, which decreased in size and number after 6 months. All groups lost mass weight after treatment, with no statistically significant differences between them. Limonene and biosilicate pretreatment did not affect the bond strength to dentin of the universal adhesive system, but resulted in more non-adhesive fractures, even after 6 months.
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Affiliation(s)
- Arthur Henrique Garcia Pinto
- Department of Dental Materials and Prosthodontics, Ribeirão Preto School of Dentistry, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Rocio Geng-Vivanco
- Department of Dental Materials and Prosthodontics, Ribeirão Preto School of Dentistry, University of São Paulo, Ribeirão Preto, SP, Brazil
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El Omari N, Mrabti HN, Benali T, Ullah R, Alotaibi A, Abdullah ADI, Goh KW, Bouyahya A. Expediting Multiple Biological Properties of Limonene and α-Pinene: Main Bioactive Compounds of Pistacia lentiscus L., Essential Oils. FRONT BIOSCI-LANDMRK 2023; 28:229. [PMID: 37796709 DOI: 10.31083/j.fbl2809229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 04/23/2023] [Accepted: 08/02/2023] [Indexed: 10/07/2023]
Abstract
BACKGROUND Screening new natural molecules with pharmacological and/or cosmetic properties remains a highly sought-after area of research. Moreover, essential oils and volatile compounds have recently garnered significant interest as natural substance candidates. In this study, the volatile components of Pistacia lentiscus L. essential oils (PLEOs) isolated from the fruit and its main compounds, alpha-pinene, and limonene, are investigated for antioxidant, antidiabetic, and dermatoprotective activities. METHODS In vitro antioxidant activity was investigated using 2,2'-diphenyl-1-picrylhydrazyl (DPPH), fluorescence recovery after photobleaching (FRAP), and 2,2-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS) methods. The antidiabetic and dermatoprotective effects were studied using enzyme inhibitory activities. RESULTS Antioxidant tests showed that PLEO has the best activity (ranging from 29.64 ± 3.04 to 73.80 ± 3.96 µg/mL) compared to its main selected molecules (ranging from 74 ± 3.72 to 107.23 ± 5.03 µg/mL). The α-glucosidase and α-amylase assays demonstrated that the elements tested have a promising antidiabetic potential with IC50values ranging from 78.03 ± 2.31 to 116.03 ± 7.42 µg/mL and 74.39 ± 3.08 to 112.35 ± 4.92 µg/mL for the α-glucosidase and α-amylase assays, respectively, compared to the standard drug. For the tyrosinase test, we found that the EOs (IC50 = 57.72 ± 2.86 µg/mL) followed by limonene (IC50 = 74.24 ± 2.06 µg/mL) and α-pinene (IC50 = 97.45 ± 5.22 µg/mL) all exhibited greater inhibitory effects than quercetin (IC50 = 246.90 ± 2.54 µg/mL). CONCLUSIONS Our results suggest that the biological activities of PLEO, as well as its main compounds, make them promising candidates for the development of new strategies aimed at improving dermatoprotection and treating diseases associated with diabetes mellitus and oxidative stress.
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Affiliation(s)
- Nasreddine El Omari
- Laboratory of Histology, Embryology, and Cytogenetic, Faculty of Medicine and Pharmacy, Mohammed V University in Rabat, 10100 Rabat, Morocco
| | - Hanae Naceiri Mrabti
- Center of Data Science and Information Technology, INTI International University, 71800 Nilai, Malaysia
| | - Taoufiq Benali
- Environment and Health Team, Polydisciplinary Faculty of Safi, Cadi Ayyad University, 4162 Sidi Bouzid B.P., Morocco
| | - Riaz Ullah
- Medicinal Aromatic and Poisonous Plants Research Center, College of Pharmacy, King Saud University, 12372 Riyadh, Saudi Arabia
| | - Amal Alotaibi
- Department of Basic Science, College of Medicine, Princess Nourahbint Abdulrahman University, 11671 Riyadh, Saudi Arabia
| | | | - Khang Wen Goh
- Center of Data Science and Information Technology, INTI International University, 71800 Nilai, Malaysia
| | - Abdelhakim Bouyahya
- Laboratory of Human Pathologies Biology, Faculty of Sciences, Mohammed V University in Rabat, 10106 Rabat, Morocco
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Balci-Torun F, Toprakçı İ, Deniz NG, Ortaboy S, Torun M, Şahin S. Development of an Optimized Method to Obtain a Limonene-Rich Concentrate from the Discarded Lemon Peels. Chem Biodivers 2023; 20:e202300767. [PMID: 37423898 DOI: 10.1002/cbdv.202300767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 07/06/2023] [Accepted: 07/09/2023] [Indexed: 07/11/2023]
Abstract
In this study, lemon peels were used as volatile component source. Automatic solvent extraction has been used for the recovery of limonene rich citrus volatile extract for the first time. The process parameters (amount of raw material, immersion time and washing time) were analyzed to optimize the process by means of Box-Behnken design via response surface methodology. The optimum conditions were achieved by ~10 g fresh lemon peel, and ~15 min immersion time and ~13 min washing time. The difference between the actual (89.37 mg/g limonene) and predicted (90.85 mg/g limonene) results was satisfactory (<2 %). α-Terpinene, β-pinene, citral, ɣ-terpinene and linalool were determined as other major volatiles in the peel extract. FT-IR and 1 H- and 13 C-NMR spectroscopies were applied to verify the identified volatile compounds.
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Affiliation(s)
- Ferhan Balci-Torun
- Akdeniz University, Faculty of Tourism, Department of Gastronomy and Culinary Art, 07058, Antalya, Turkey
| | - İrem Toprakçı
- Istanbul University-Cerrahpaşa, Faculty of Engineering, Chemical Engineering Department, Avcilar, 34320, Istanbul, Turkey
| | - Nahide Gulşah Deniz
- Istanbul University-Cerrahpaşa, Faculty of Engineering, Chemistry Department, Division of Organic Chemistry, Avcilar, 34320, Istanbul, Turkey
| | - Sinem Ortaboy
- Istanbul University-Cerrahpaşa, Faculty of Engineering, Chemistry Department, Division of Physical Chemistry, Avcilar, 34320, Istanbul, Turkey
| | - Mehmet Torun
- Akdeniz University, Faculty of Engineering, Food Engineering Department, 07058, Antalya, Turkey
| | - Selin Şahin
- Istanbul University-Cerrahpaşa, Faculty of Engineering, Chemical Engineering Department, Avcilar, 34320, Istanbul, Turkey
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Joaquin HF, Jaime PM, Rodrigo OT. Applying a Green Solvent with Microwave, Ultrasound, and Soxhlet Extraction Techniques to Quantify the Slip Additive cis-1,3-Docosenamide and Nine Oxidative Degradation Byproducts in Polypropylene Samples. Polymers (Basel) 2023; 15:3457. [PMID: 37631513 PMCID: PMC10458392 DOI: 10.3390/polym15163457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 08/15/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023] Open
Abstract
Erucamide is used as an important slip agent for polymers. However, erucamide can degrade during processing and long-term storage, forming various oxidation products. These degradation products can affect the recovery rates of erucamide. In this study, investigated different solid-liquid extraction methods (Soxhlet, microwave, and ultrasound) and used gas chromatography with mass spectrometry (GC-MS) to quantify erucamide and its degradation byproducts in polypropylene (PP). A multivariable experiment was designed, and a mixed-effect approach was used to analyze the results. Various extraction variables were examined, such as temperature, time, solvents, and PP pretreatments. Using a mixed-effect model with a Kenward-Roger approximation, an R2 of the model of 97% and p values of 0.168, 0.000, and 0.000 were obtained for the technical, solvent, and type of PP pretreatment variables, respectively. The highest average recoveries of erucamide were found with the microwave technique and were 96.4% using dichloromethane, 94.57% using cyclohexane, and 93.05% using limonene. With ultrasound, recoveries ranged between 85 and 92% for dichloromethane and limonene. In addition, it was observed that the extraction method had better recovery results in ground PP than in films and in pellets. Nine oxidative degradation byproducts of erucamide were identified and semi-quantified by GC-MS. The reaction mechanisms for forming each byproduct were proposed. The byproducts that experienced a higher rate of degradation of erucamide were erucamide with a hydroxyl group at position one and 12-amino-6-12-oxo-dodecanoic acid, showing more prominent peaks using the Soxhlet method with cyclohexane and dichloromethane as solvents and polypropylene (PP) films as the type of material used.
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Affiliation(s)
- Hernández Fernández Joaquin
- Chemistry Program, Department of Natural and Exact Sciences, San Pablo Campus, University of Cartagena, Cartagena 130015, Colombia
- Chemical Engineering Program, School of Engineering, Universidad Tecnológica de Bolivar, Parque Industrial y Tecnológico Carlos Vélez Pombo Km 1 Vía Turbaco, Cartagena 130001, Colombia
- Department of Natural and Exact Science, Universidad de la Costa, Barranquilla 080002, Colombia
| | - Pérez Mendoza Jaime
- Complex Fluid Engineering and Food Rheology Research Group (IFCRA), Food Engineering Department, Universidad de Cartagena, Cartagena de Indias 130015, Colombia;
| | - Ortega-Toro Rodrigo
- Food Packaging and Shelf-Life Research Group (FP&SL), Food Engineering Department, Universidad de Cartagena, Cartagena de Indias 130015, Colombia;
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Zlotnikov ID, Davydova MP, Danilov MR, Krylov SS, Belogurova NG, Kudryashova EV. Covalent Conjugates of Allylbenzenes and Terpenoids as Antibiotics Enhancers with the Function of Prolonged Action. Pharmaceuticals (Basel) 2023; 16:1102. [PMID: 37631017 PMCID: PMC10459265 DOI: 10.3390/ph16081102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/20/2023] [Accepted: 08/01/2023] [Indexed: 08/27/2023] Open
Abstract
The drug resistance of pathogenic bacteria is often due efflux pumps-specific proteins that remove foreign compounds from bacterial cells. To overcome drug resistance, adjuvants are often used that can inhibit efflux pumps or other systems that ensure the resistance of bacteria to the action of antibiotics. We assumed that a new level of effectiveness with the use of an antibiotic + an adjuvant pair could be achieved by their joint delivery into the pathogen. To test this hypothesis, we constructed a series of molecular carriers based on poly-(olygo-, dendry)mers based on cyclodextrin-grafted PEI or mannan, as well as glycol chitosan, covalently bound to antibiotic, adjuvant, and the oligosaccharide ligand to the macrophage mannose receptor (CD206), which we studied earlier and showed high efficiency and selectivity of delivery of a therapeutic "cargo" to macrophages. Moxifloxacin was used as an antibiotic, and terpenoid and allylbenzene compounds were used as adjuvants, for which we previously discovered the ability to inhibit bacterial efflux pumps. We show that: (a) the resulting structures were stable in vitro for a long time (up to 10 days); (b) they were adsorbed on bacterial cells, providing a local increase in the concentration of the antibiotic and adjuvant in pathogen cells; (c) they were internalized by bacterial cells, ensuring the accumulation of both antibiotic and adjuvant inside bacterial cells; (d) the adjuvant, after entering the bacterial cell, provided inhibition of the efflux pumps; (e) due to this action of the adjuvant, combined with the targeted delivery by the carrier, the antibiotic's half-life in rats increased by more than 2 times, the effective concentration of the drug in the blood plasma (AUC) increased up to 8-10 times; (f) a significant increase in the effectiveness of the antibacterial action against Gram+ and Gram- cells was achieved (up to 3 times). Potentially, such an approach would significantly increase the effectiveness of therapies for a number of infectious and other diseases, reduce the dosage of antibiotics, shorten the duration of treatment, and reduce the risk of developing bacterial resistance. Moreover, the use of a polymer carrier with covalently bound organic molecules of different structures will avoid problems linked to different (suboptimal) solubility and bio-distribution of the administered molecules, which would be almost inevitable when using the same compounds separately. It would be very difficult to find antibiotic/adjuvant pairs that simultaneously achieve optimal concentrations in the same target cells. In our case, terpenoids and alkylbenzenes used as adjuvants are practically insoluble as individual compounds, and their unacceptable pharmacological properties would not allow them to be used as efflux pump inhibitors.
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Affiliation(s)
- Igor D. Zlotnikov
- Faculty of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1/3, 119991 Moscow, Russia
| | - Maria P. Davydova
- Faculty of Medicine, Lomonosov Moscow State University, Lomonosovsky Prospect 27/1, 119192 Moscow, Russia
| | - Milan R. Danilov
- Faculty of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1/3, 119991 Moscow, Russia
| | - Sergey S. Krylov
- N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, 47 Leninsky Prospect, 119991 Moscow, Russia
| | - Natalya G. Belogurova
- Faculty of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1/3, 119991 Moscow, Russia
| | - Elena V. Kudryashova
- Faculty of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1/3, 119991 Moscow, Russia
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22
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Rossi A, Spagnoli E, Tralli F, Marzocchi M, Guidi V, Fabbri B. New Approach for the Detection of Sub-ppm Limonene: An Investigation through Chemoresistive Metal-Oxide Semiconductors. Sensors (Basel) 2023; 23:6291. [PMID: 37514586 PMCID: PMC10383529 DOI: 10.3390/s23146291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/29/2023] [Accepted: 07/06/2023] [Indexed: 07/30/2023]
Abstract
R-(+)-limonene, one of the major constituents of citrus oils, is a monoterpene that is widely used as a fragrance additive in cosmetics, foods, and industrial solvents. Nowadays, its detection mainly relies on bulky and expensive analytical methods and only a few research works proved its revelation through affordable and portable sensors, such as electrochemical and quartz crystal microbalance sensors. In response to the demand for effective miniaturized sensing devices to be integrated into Internet of Things systems, this study represents a pioneering investigation of chemoresistive gas sensor capabilities addressed to R-(+)-limonene detection. An array of seven metal-oxide sensors was exploited to perform a complete electrical characterization of the target analyte. The experimental evidence allowed us to identify the WO3-based sensor as the most promising candidate for R-(+)-limonene detection. The material was highly sensitive already at sub-ppm concentrations (response of 2.5 at 100 ppb), consistent with applicative parameters, and it resulted in selective vs. different gases at a lower operating temperature (200 °C) than the other sensors tested. Furthermore, it exhibited a humidity-independent behavior under real-life conditions (relative humidity > 20%). Finally, the WO3 sensor also demonstrated a remarkable cross-selectivity, thus enabling its exploitation in cutting-edge applications.
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Affiliation(s)
- Arianna Rossi
- Department of Physics and Earth Sciences, University of Ferrara, Via Saragat 1/C, 44122 Ferrara, Italy
| | - Elena Spagnoli
- Department of Physics and Earth Sciences, University of Ferrara, Via Saragat 1/C, 44122 Ferrara, Italy
| | - Francesco Tralli
- Department of Physics and Earth Sciences, University of Ferrara, Via Saragat 1/C, 44122 Ferrara, Italy
| | - Marco Marzocchi
- Sacmi Imola S.C., Olfactory Systems, Via Selice Prov.le, 17/a, 40026 Imola, Italy
| | - Vincenzo Guidi
- Department of Physics and Earth Sciences, University of Ferrara, Via Saragat 1/C, 44122 Ferrara, Italy
| | - Barbara Fabbri
- Department of Physics and Earth Sciences, University of Ferrara, Via Saragat 1/C, 44122 Ferrara, Italy
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23
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Chigo-Hernandez MM, Tomasino E. Aroma Perception of Limonene, Linalool and α-Terpineol Combinations in Pinot Gris Wine. Foods 2023; 12:2389. [PMID: 37372600 DOI: 10.3390/foods12122389] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 06/09/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
Aromatic white wines contain monoterpenes that can alter aroma qualities based on their concentration and enantiomeric ratios. Limonene has been identified as a monoterpene that is used to differentiate monovarietal white wines. The aim of this study was to evaluate the influence of limonene on aroma perception at different enantiomeric ratios. Its interaction with linalool and α-terpineol compounds was also investigated. Eighteen model wines were created with different ratios and/or concentrations of limonene and diverse concentrations of linalool and α-terpineol. Triangle tests, check-all-that-apply (CATA) and descriptive analysis were used to evaluate the aroma of the wines. Results show that different limonene ratios had no influence on wine aroma. Descriptive analysis showed that the addition of only limonene influenced citrus characteristics depending on the concentration. Linalool addition did not alter aroma quality when the limonene was at low concentrations, but it did change aroma perception at high limonene levels. α-Terpineol only altered the aroma of the wine at medium and high concentrations. At high concentrations, linalool and α-terpineol presented tropical aromas with some floral notes, irrespective of limonene levels. Depending on the desired aroma qualities of the wine, altering the monoterpene content resulted in very different aromatic wines.
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Affiliation(s)
| | - Elizabeth Tomasino
- Department of Food Science & Technology, Oregon State University, Corvallis, OR 97331, USA
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24
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Abla KK, Domiati S, El Majzoub R, Mehanna MM. Propranolol-Loaded Limonene-Based Microemulsion Thermo-Responsive Mucoadhesive Nasal Nanogel: Design, In Vitro Assessment, Ex Vivo Permeation, and Brain Biodistribution. Gels 2023; 9:491. [PMID: 37367161 DOI: 10.3390/gels9060491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 06/10/2023] [Accepted: 06/13/2023] [Indexed: 06/28/2023] Open
Abstract
Propranolol is the first-line drug for managing migraine attacks. D-limonene is a citrus oil known for its neuroprotective mechanism. Thus, the current work aims to design a thermo-responsive intranasal limonene-based microemulsion mucoadhesive nanogel to improve propranolol efficacy. Microemulsion was fabricated using limonene and Gelucire® as the oily phase, Labrasol®, Labrafil®, and deionized water as the aqueous phase, and was characterized regarding its physicochemical features. The microemulsion was loaded in thermo-responsive nanogel and evaluated regarding its physical and chemical properties, in vitro release, and ex vivo permeability through sheep nasal tissues. Its safety profile was assessed via histopathological examination, and its capability to deliver propranolol effectively to rats' brains was examined using brain biodistribution analysis. Limonene-based microemulsion was of 133.7 ± 0.513 nm diametric size with unimodal size distribution and spheroidal shape. The nanogel showed ideal characteristics with good mucoadhesive properties and in vitro controlled release with 1.43-fold enhancement in ex vivo nasal permeability compared with the control gel. Furthermore, it displayed a safe profile as elucidated by the nasal histopathological features. The nanogel was able to improve propranolol brain availability with Cmax 970.3 ± 43.94 ng/g significantly higher than the control group (277.7 ± 29.71 ng/g) and with 382.4 % relative central availability, which confirms its potential for migraine management.
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Affiliation(s)
- Kawthar K Abla
- Pharmaceutical Nanotechnology Research Lab, Faculty of Pharmacy, Beirut Arab University, Beirut P.O. Box 11-5020, Lebanon
| | - Souraya Domiati
- Department of Pharmacology and Therapeutics, Faculty of Pharmacy, Beirut Arab University, Beirut P.O. Box 11-5020, Lebanon
| | - Rania El Majzoub
- Department of Biomedical Sciences, Faculty of Pharmacy, Lebanese International University, Beirut P.O. Box 11-5020, Lebanon
| | - Mohammed M Mehanna
- Department of Industrial Pharmacy, Faculty of Pharmacy, Alexandria University, Alexandria 21521, Egypt
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Porrello A, Merra R, Badalamenti N, Bruno M. Angelica sylvestris L. (Apiaceae) of the Isle of Skye (Scotland): chemical composition of essential oil from the aerial flowering parts. Nat Prod Res 2023:1-5. [PMID: 37245156 DOI: 10.1080/14786419.2023.2215906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 05/03/2023] [Accepted: 05/10/2023] [Indexed: 05/29/2023]
Abstract
Angelica is a large genus of plants belonging to the Apiaceae family that includes about 100 species of biennial or perennial herbs. Several species of this genus are extensively used in various traditional medicines and, despite their content in toxic furanocoumarins, also as food. In this study, the chemical composition of the essential oil (EO) from aerial flowering parts of Angelica sylvestris L., a plant distributed in Europe, North and Central Asia, collected in the Isle of Skey (Scotland), was analyzed by GC and GC-MS. No one report has been previously published on this accession. The result showed the presence of a large quantity of monoterpene hydrocarbons with limonene (51.89%), by far, as the most abundant component. Other metabolites present in lesser quantity were β-pinene (4.61%), α-pinene (3.54%), and thymol (3.33%). Considerations with respect to all the other EOs of A. sylvestris taxa, studied so far, were carried out.
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Affiliation(s)
- Antonella Porrello
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, Palermo, Italy
| | - Rosalia Merra
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, Palermo, Italy
| | - Natale Badalamenti
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, Palermo, Italy
| | - Maurizio Bruno
- Dipartimento di Scienze e Tecnologie Biologiche Chimiche e Farmaceutiche (STEBICEF), Università di Palermo, Palermo, Italy
- Centro Interdipartimentale di Ricerca "Riutilizzo bio-based degli scarti da matrici agroalimentari" (RIVIVE), Università di Palermo, Palermo, Italy
- NBFC, National Biodiversity Future Center, Palermo, Italy
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26
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Varga-Visi É, Nagy G, Csivincsik Á, Tóth T. Evaluation of a Phytogenic Feed Supplement Containing Carvacrol and Limonene on Sheep Performance and Parasitological Status on a Hungarian Milking Sheep Farm. Vet Sci 2023; 10:369. [PMID: 37368755 DOI: 10.3390/vetsci10060369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 05/14/2023] [Accepted: 05/21/2023] [Indexed: 06/29/2023] Open
Abstract
There is currently worldwide interest in phytogenic feed supplements (PFSs) because they can lead to improved animal production. The scope of the present study was to observe the impact of a feed supplement containing carvacrol (CAR) and limonene (LIM) on the performance and parasitological status of sheep. The feed supplement decreased the plasma levels of β-hydroxybutyrate (p < 0.001), triglycerides (p = 0.014), nonesterified fatty acids (p = 0.021), and fructosamine (p = 0.002) in lactating ewes after 42 days of supplementation, while the average live weight (p = 0.002) and average daily weight gain (p = 0.001) of their twin suckling lambs increased significantly by the end of the study. In another experiment, fattening lambs fed the same supplement showed a decrease in fecal egg number of gastrointestinal nematodes (p = 0.02) but no differences in live weight, average daily gain, or mean number of Haemonchus contortus nematodes in the abomasum. The results highlighted that the inclusion of carvacrol and limonene in the feed of lactating ewes effectively increased the weight gain of the suckling lambs, presumably due to the ewes' improved energy, but further studies are needed to elucidate the effects of carvacrol and limonene against gastrointestinal parasites.
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Affiliation(s)
- Éva Varga-Visi
- Institute of Physiology and Animal Nutrition, Kaposvár Campus, Hungarian University of Agriculture and Life Sciences, 7400 Kaposvár, Hungary
| | - Gábor Nagy
- Institute of Physiology and Animal Nutrition, Kaposvár Campus, Hungarian University of Agriculture and Life Sciences, 7400 Kaposvár, Hungary
- Agribiotechnology and Precision Breeding for Food Security National Laboratory, Kaposvár Campus, Hungarian University of Agriculture and Life Sciences, 7400 Kaposvár, Hungary
| | - Ágnes Csivincsik
- Institute of Physiology and Animal Nutrition, Kaposvár Campus, Hungarian University of Agriculture and Life Sciences, 7400 Kaposvár, Hungary
- One Health Working Group, Kaposvár Campus, Hungarian University of Agriculture and Life Sciences, 7400 Kaposvár, Hungary
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27
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Kong X, Wu Y, Yu W, Liu Y, Li J, Du G, Lv X, Liu L. Efficient Synthesis of Limonene in Saccharomyces cerevisiae Using Combinatorial Metabolic Engineering Strategies. J Agric Food Chem 2023; 71:7752-7764. [PMID: 37189018 DOI: 10.1021/acs.jafc.3c02076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Limonene is a volatile monoterpene compound that is widely used in food additives, pharmaceutical products, fragrances, and toiletries. We herein attempted to perform efficient biosynthesis of limonene in Saccharomyces cerevisiae using systematic metabolic engineering strategies. First, we conducted de novo synthesis of limonene in S. cerevisiae and achieved a titer of 46.96 mg/L. Next, by dynamic inhibition of the competitive bypass of key metabolic branches regulated by ERG20 and optimization of the copy number of tLimS, a greater proportion of the metabolic flow was directed toward limonene synthesis, achieving a titer of 640.87 mg/L. Subsequently, we enhanced the acetyl-CoA and NADPH supply, which increased the limonene titer to 1097.43 mg/L. Then, we reconstructed the limonene synthesis pathway in the mitochondria. Dual regulation of cytoplasmic and mitochondrial metabolism further increased the limonene titer to 1586 mg/L. After optimization of the process of fed-batch fermentation, the limonene titer reached 2.63 g/L, the highest ever reported in S. cerevisiae.
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Affiliation(s)
- Xiao Kong
- Science Center for Future Foods, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Yaokang Wu
- Science Center for Future Foods, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Wenwen Yu
- Science Center for Future Foods, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Yanfeng Liu
- Science Center for Future Foods, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Jianghua Li
- Science Center for Future Foods, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Guocheng Du
- Science Center for Future Foods, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Xueqin Lv
- Science Center for Future Foods, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
| | - Long Liu
- Science Center for Future Foods, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
- Food Laboratory of Zhongyuan, Jiangnan University, Wuxi, Jiangsu 214122, People's Republic of China
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28
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Han X, Qi H, Niu J. L- limonene reduces aortic artery atherosclerosis by inhibiting oxidative stress/inflammatory responses in diabetic rats fed high-fat diet. CHINESE J PHYSIOL 2023; 66:129-136. [PMID: 37322623 DOI: 10.4103/cjop.cjop-d-22-00139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023] Open
Abstract
Atherosclerosis, a leading cause of mortality worldwide, is driven by multiple risk factors such as diabetes. Oxidative stress and inflammation assist interrelated roles in diabetes-accelerated atherosclerosis. Thereby, treatment of diabetic atherosclerosis from an oxidative stress/inflammatory perspective seems to be a more effective modality to prevent and delay plaque formation and progression. This study aimed to evaluate the effects of l-limonene (LMN) on oxidative stress/inflammatory responses in the aortic artery of diabetic atherosclerosis-modeled rats. Male Wistar rats (n = 30, 250-280 g, 12 weeks old) were used to establish a diabetic atherosclerosis model (8 weeks) using high-fat diet/low-dose streptozotocin. LMN (200 mg/kg/day) was administered orally, starting on day 30th before tissue sampling. Plasma lipid profiles, aortic histopathological changes, atherogenic index, aortic artery levels of oxidative stress markers (manganese superoxide dismutase, glutathione, and 8-isoprostane), inflammatory markers (tumor necrosis factor-alpha, interleukin (IL)-6, and IL-10), and expression of phosphorylated adenosine monophosphate-activated protein kinase (p-AMPK)/AMPK, Sirtuin 1 (SIRT1), and p-p65/p65 proteins were evaluated. The administration of LMN to diabetic rats improved lipid profiles, aortic histopathological morphology, and atherogenic index (P < 0.05 to P < 0.001). It also increased enzymatic antioxidant activities, decreased 8-isoprostane level, suppressed inflammatory response, upregulated p-AMPK and SIRT1 proteins, and downregulated p-p65 protein (P < 0.05 to P < 0.01). Inhibiting the AMPK through the administration of compound C significantly abolished or reversed the positive effects of LMN in diabetic rats (P < 0.05 to P < 0.01). LMN treatment had dual anti-oxidative and anti-inflammatory actions against atherosclerosis in the aortic artery of diabetic rats. Atheroprotection by LMN was mediated partly through modulation of AMPK/SIRT1/p65 nuclear factor kappa B signaling pathway. LMN appears to be a promising anti-atherosclerotic modality to improve the quality of life in diabetic patients.
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Affiliation(s)
- Xia Han
- Department of Cardiology, People's Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Huaxin Qi
- Department of Cardiology, People's Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Jiamin Niu
- Department of Cardiology, People's Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
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29
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Li Q, Putra NR, Rizkiyah DN, Abdul Aziz AH, Irianto I, Qomariyah L. Orange Pomace and Peel Extraction Processes towards Sustainable Utilization: A Short Review. Molecules 2023; 28:molecules28083550. [PMID: 37110784 PMCID: PMC10145211 DOI: 10.3390/molecules28083550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/01/2023] [Accepted: 03/02/2023] [Indexed: 04/29/2023] Open
Abstract
More than 58 million metric tonnes of oranges were produced in 2021, and the peels, which account for around one-fifth of the fruit weight, are often discarded as waste in the orange juice industry. Orange pomace and peels as wastes are used as a sustainable raw material to make valuable products for nutraceuticals. The orange peels and pomace contain pectin, phenolics, and limonene, which have been linked to various health benefits. Various green extraction methods, including supercritical carbon dioxide (ScCO2) extraction, subcritical water extraction (SWE), ultrasound-assisted extraction (UAE), and microwave-assisted extraction (MAE), are applied to valorize the orange peels and pomace. Therefore, this short review will give insight into the valorization of orange peels/pomace extraction using different extraction methods for health and wellness. This review extracts information from articles written in English and published from 2004 to 2022. The review also discusses orange production, bioactive compounds in orange peels/pomaces, green extractions, and potential uses in the food industry. Based on this review, the valorization of orange peels and pomaces can be carried out using green extraction methods with high quantities and qualities of extracts. Therefore, the extract can be used for health and wellness products.
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Affiliation(s)
- Qingxiao Li
- College of Grain Engineering, Henan Industry and Trade Vocational College, Zhengzhou 451191, China
| | - Nicky Rahmana Putra
- Centre of Lipid Engineering and Applied Research (CLEAR), Ibnu Sina Institute for Scientific and Industrial Research, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
| | - Dwila Nur Rizkiyah
- Centre of Lipid Engineering and Applied Research (CLEAR), Ibnu Sina Institute for Scientific and Industrial Research, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia
| | - Ahmad Hazim Abdul Aziz
- Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, Kota Kinabalu 88400, Malaysia
| | - Irianto Irianto
- Department General Education, Faculty of Resilience, Rabdan Academy, Abu Dhabi 114646, United Arab Emirates
| | - Lailatul Qomariyah
- Department of Industrial Chemical Engineering, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
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30
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Torshabi M, MoadabShoar Z, Negahban M. Preparation of Citrus reticulata peel nano-encapsulated essential oil and in vitro assessment of its biological properties. Eur J Oral Sci 2023; 131:e12924. [PMID: 36794558 DOI: 10.1111/eos.12924] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 01/26/2023] [Indexed: 02/17/2023]
Abstract
Dental caries is the most common biofilm-dependent oral disease. Streptococcus mutans is among the main microorganisms responsible for the development of dental caries. Nano-suspension of Citrus reticulata (tangerine) peel essential oil in 0.5% (v/v) concentration was prepared and its antibacterial effect on S. mutans in planktonic and biofilm forms as well as its cytotoxic and antioxidant effects were assessed and compared with chlorhexidine (CHX). The minimum inhibitory concentration (MIC) of free essential oil, nano-encapsulated essential oil, and CHX was 5.6% (v/v), 0.0005% (v/v), and 0.0002% (w/v), respectively. The percentage of biofilm inhibition by the free essential oil, nano-encapsulated essential oil, and CHX at half-MIC was 67.3%, 24%, and 90.6%, respectively. The nano-encapsulated essential oil had no cytotoxicity and showed significant antioxidant effects in different concentrations. Nano-encapsulation of tangerine peel essential oil significantly enhanced its biological activities in much lower concentrations than the free essential oil (11,000 times diluted). It also showed lower cytotoxicity and higher antibiofilm effects in sub-MICs compared with CHX, indicating the optimal potential of tangerine nano-encapsulated essential oil for incorporation in the composition of organic antibacterial and antioxidant mouth rinses.
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Affiliation(s)
- Maryam Torshabi
- Department of Dental Biomaterials, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Zahra MoadabShoar
- School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Negahban
- Department of Pesticides Researches, Iranian Research Institute of Plant Protection, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
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31
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Yang J, Lee SY, Jang SK, Kim KJ, Park MJ. Inhibition of Melanogenesis by Essential Oils from the Citrus Cultivars Peels. Int J Mol Sci 2023; 24:ijms24044207. [PMID: 36835634 PMCID: PMC9962211 DOI: 10.3390/ijms24044207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 02/10/2023] [Accepted: 02/16/2023] [Indexed: 02/22/2023] Open
Abstract
Citrus is one of the most popular and widely grown fruit crops in the world. However, the bioactivity of only certain species of citrus cultivars is studied. In this study, the effects of essential oils from 21 citrus cultivars on melanogenesis were investigated in an effort to identify active anti-melanogenesis constituents. The essential oils from the peels of 21 citrus cultivars obtained by hydro-distillation were analyzed using gas chromatography-mass spectrometry. Mouse melanoma B16BL6 cells were used in all assays conducted in this study. The tyrosinase activity and melanin content were determined using the lysate of α-Melanocyte-stimulated B16BL6 cells. In addition, the melanogenic gene expression was determined by quantitative reverse transcription-polymerase chain reaction. Overall, the essential oils of (Citrus unshiu X Citrus sinensis) X Citrus reticulata, Citrus reticulata, and ((Citrus unshiu X Citrus sinensis) X Citrus reticulata) X Citrus reticulata provided the best bioactivity and comprised five distinct constituents compared to other essential oils such as limonene, farnesene, β-elemene, terpinen-4-ol, and sabinene. The anti-melanogenesis activities of the five individual compounds were evaluated. Among the five essential oils, β-elemene, farnesene, and limonene showed dominating properties. The experimental results indicated that (Citrus unshiu X Citrus sinensis) X Citrus reticulata, Citrus reticulata, and ((Citrus unshiu X Citrus sinensis) X Citrus reticulata) X Citrus reticulara are potential candidates with anti-melanogenesis activity for use as cosmetics and pharmaceutical agents against skin hyperpigmentation.
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Affiliation(s)
- Jiyoon Yang
- Forest Industrial Materials Division, Forest Products and Industry Department, National Institute of Forest Science, Seoul 02455, Republic of Korea
- Division of Life Sciences, Korea University, Seoul 02841, Republic of Korea
| | - Su-Yeon Lee
- Forest Industrial Materials Division, Forest Products and Industry Department, National Institute of Forest Science, Seoul 02455, Republic of Korea
| | - Soo-Kyeong Jang
- Forest Industrial Materials Division, Forest Products and Industry Department, National Institute of Forest Science, Seoul 02455, Republic of Korea
| | - Ki-Joong Kim
- Division of Life Sciences, Korea University, Seoul 02841, Republic of Korea
| | - Mi-Jin Park
- Forest Industrial Materials Division, Forest Products and Industry Department, National Institute of Forest Science, Seoul 02455, Republic of Korea
- Correspondence: ; Tel.: +82-2-961-2751; Fax: +82-2-961-2769
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Ghasemi S, Assadpour E, Kharazmi MS, Jafarzadeh S, Zargar M, Jafari SM. Encapsulation of Orange Peel Oil in Biopolymeric Nanocomposites to Control Its Release under Different Conditions. Foods 2023; 12. [PMID: 36832906 DOI: 10.3390/foods12040831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 02/17/2023] Open
Abstract
Orange peel oil (OPO) is one of the most common flavorings used in the food industry, but it is volatile under environmental conditions (the presence of light, oxygen, humidity, and high temperatures). Encapsulation by biopolymer nanocomposites is a suitable and novel strategy to improve the bioavailability and stability of OPO and its controlled release. In this study, we investigated the release profile of OPO from freeze-dried optimized nanocomposite powders as a function of pH (3, 7, 11) and temperature (30, 60, and 90 °C), and within a simulated salivary system. Finally, its release kinetics modelling was performed using experimental models. The encapsulation efficiency of OPO within the powders, along with the morphology and size of the particles, were also evaluated by an atomic force microscopy (AFM) analysis. The results showed that the encapsulation efficiency was in the range of 70-88%, and the nanoscale size of the particles was confirmed by AFM. The release profile showed that the lowest and the highest release rates were observed at the temperatures of 30 and 90 °C and in the pH values of 3 and 11, respectively, for all three samples. The Higuchi model provided the best model fitting of the experimental data for the OPO release of all the samples. In general, the OPO encapsulates prepared in this study showed promising characteristics for food flavoring applications. These results suggest that the encapsulation of OPO may be useful for controlling its flavor release under different conditions and during cooking.
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Basu S, Amdursky N. The Role of Surface Groups in Dictating the Chiral-Solvent-Induced Assembly of Carbon Dots into Structures Exhibiting Circularly Polarized Luminescence. Small 2023; 19:e2205880. [PMID: 36504318 DOI: 10.1002/smll.202205880] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 11/28/2022] [Indexed: 06/17/2023]
Abstract
Here, the use of achiral nanoparticles and solvent-induced chirality transfer is combined for the making of large structures exhibiting chiroptical properties in the form of circularly polarized luminescence (CPL). The nanoparticles that the authors use are carbon dots (C-Dots) that are known for their bright luminescence and the ability to tune their surface moieties by using different precursors in their synthesis. Here, the result of adding the chiral solvent limonene into an aqueous solution of various C-Dots is explored, differentiated by their surface group. It is shown that only nitrogen-containing C-Dots with amine functional groups see the emergence of a CPL signal and the formation of a large fibrillar assembled structure. The various forces happening in the interface between the C-Dots and the limonene phase and the role of the amine groups in both the chirality transfer interactions and the interactions between C-Dots in the assembly process are discussed, whereas these two processes intertwine with each other. The ability to form fluorescent chiral structures exhibiting CPL from achiral nanoparticles and the understanding of the various interactions in this process are both important to the rationale design of any supramolecular chiral assemblies.
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Affiliation(s)
- Srestha Basu
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa, 3200003, Israel
| | - Nadav Amdursky
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa, 3200003, Israel
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Li CP, Wu DH, Huang SH, Meng M, Shih HT, Lai MH, Chen LJ, Jena KK, Hechanova SL, Ke TJ, Chiu TY, Tsai ZY, Chen GK, Tsai KC, Leu WM. The Bph45 Gene Confers Resistance against Brown Planthopper in Rice by Reducing the Production of Limonene. Int J Mol Sci 2023; 24:1798. [PMID: 36675314 PMCID: PMC9863282 DOI: 10.3390/ijms24021798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/06/2023] [Accepted: 01/11/2023] [Indexed: 01/18/2023] Open
Abstract
Brown planthopper (BPH), a monophagous phloem feeder, consumes a large amount of photoassimilates in rice and causes wilting. A near-isogenic line ‘TNG71-Bph45’ was developed from the Oryza sativa japonica variety ‘Tainung 71 (TNG71) carrying a dominant BPH-resistance locus derived from Oryza nivara (IRGC 102165) near the centromere of chromosome 4. We compared the NIL (TNG71-Bph45) and the recurrent parent to explore how the Bph45 gene confers BPH resistance. We found that TNG71-Bph45 is less attractive to BPH at least partially because it produces less limonene. Chiral analysis revealed that the major form of limonene in both rice lines was the L-form. However, both L- and D-limonene attracted BPH when applied exogenously to TNG71-Bph45 rice. The transcript amounts of limonene synthase were significantly higher in TNG71 than in TNG71-Bph45 and were induced by BPH infestation only in the former. Introgression of the Bph45 gene into another japonica variety, Tainan 11, also resulted in a low limonene content. Moreover, several dominantly acting BPH resistance genes introduced into the BPH-sensitive IR24 line compromised its limonene-producing ability and concurrently decreased its attractiveness to BPH. These observations suggest that reducing limonene production may be a common resistance strategy against BPH in rice.
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Affiliation(s)
- Charng-Pei Li
- Crop Science Division, Taiwan Agricultural Research Institute, Council of Agriculture, Taichung 41362, Taiwan
| | - Dong-Hong Wu
- Crop Science Division, Taiwan Agricultural Research Institute, Council of Agriculture, Taichung 41362, Taiwan
| | - Shou-Horng Huang
- Department of Plant Protection, Chiayi Agricultural Experiment Station, Taiwan Agricultural Research Institute, Chiayi 60044, Taiwan
| | - Menghsiao Meng
- Graduate Institute of Biotechnology, National Chung Hsing University, Taichung 40227, Taiwan
| | - Hsien-Tzung Shih
- Applied Zoology Division, Taiwan Agricultural Research Institute, Council of Agriculture, Taichung, 41362, Taiwan
| | - Ming-Hsin Lai
- Crop Science Division, Taiwan Agricultural Research Institute, Council of Agriculture, Taichung 41362, Taiwan
| | - Liang-Jwu Chen
- Institute of Molecular Biology, National Chung Hsing University, Taichung 40227, Taiwan
| | - Kshirod K. Jena
- Gene Identification and Validation (GIV) Laboratory, Rice Breeding Innovation Platform, International Rice Research Institute, DAPO Box 7777, Metro Manila 1301, Philippines
- School of Biotechnology, KIIT University, Bhubaneswar 751024, Odisha, India
| | - Sherry Lou Hechanova
- Gene Identification and Validation (GIV) Laboratory, Rice Breeding Innovation Platform, International Rice Research Institute, DAPO Box 7777, Metro Manila 1301, Philippines
| | - Ting-Jyun Ke
- Graduate Institute of Biotechnology, National Chung Hsing University, Taichung 40227, Taiwan
| | - Tai-Yuan Chiu
- Graduate Institute of Biotechnology, National Chung Hsing University, Taichung 40227, Taiwan
| | - Zong-Yuan Tsai
- Graduate Institute of Biotechnology, National Chung Hsing University, Taichung 40227, Taiwan
| | - Guo-Kai Chen
- Graduate Institute of Biotechnology, National Chung Hsing University, Taichung 40227, Taiwan
| | - Kuan-Chieh Tsai
- Graduate Institute of Biotechnology, National Chung Hsing University, Taichung 40227, Taiwan
| | - Wei-Ming Leu
- Graduate Institute of Biotechnology, National Chung Hsing University, Taichung 40227, Taiwan
- Biotechnology Center, National Chung Hsing University, Taichung 40227, Taiwan
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Wu K, Wu Z, Kang Y, Su C, Yi F. Hydrogen bond-driven assembly of coral-like soy protein isolate-tannic acid microcomplex for encapsulation of limonene. J Sci Food Agric 2023; 103:185-194. [PMID: 35842518 DOI: 10.1002/jsfa.12130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/21/2022] [Accepted: 07/16/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND The encapsulation of flavor and aroma compounds has great potential in foods, while effective preparation in the food industry is still a great challenge. Inspired by leather tanning, tannic acid (TA) was used for deep crosslinking through hydrogen bond-driven assembly on soy protein isolate for encapsulating limonene with a high loading ratio. RESULTS The added TA changed the protein structure and formed a limonene-loaded microcomplex. The morphology of these microcomplexes changed from smooth to rough, followed by the formation of smooth nanoparticle aggregates, by changing the amount of TA. The encapsulation efficiency and loading ratio were increased from 0.78% and 4.30% to 59.32% and 45.78% after increasing TA from 1.875 to 60 mg mL-1 . The result of confocal laser scanning microscopy indicated that limonene is evenly distributed in microcomplexes. Additionally, the results of thermal stability demonstrated protection of limonene by soy protein-tannic acid microcomplex. CONCLUSION It is suggested that the added TA improved the encapsulation efficiency and loading ratio. Limonene is loaded in the complex in two ways. The present research provides a new and easy path for the preparation of the non-thermal soy protein aroma carrier. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Kaiwen Wu
- Department of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, China
| | - Zhenglin Wu
- Department of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, China
| | - Yuxuan Kang
- Department of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, China
| | - Chang Su
- Department of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, China
| | - Fengping Yi
- Department of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai, China
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Cho Y, Bae J, Choi MJ. Physicochemical Characteristics of Meat Analogs Supplemented with Vegetable Oils. Foods 2023; 12:foods12020312. [PMID: 36673404 PMCID: PMC9857573 DOI: 10.3390/foods12020312] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/23/2022] [Accepted: 01/03/2023] [Indexed: 01/11/2023] Open
Abstract
This study identified the effect of the type and concentration of vegetable oil on the quality of meat analogs and analyzed the differences in their physiochemical characteristics. Various vegetable oils, such as castor oil, orange oil, palm oil, shortening, and margarine, were added to meat analogs. The meat analog was prepared by adding 10, 20, 30, 40, and 50 g of each vegetable oil based on 100 g of textured vegetable protein. The cooking loss, water content, liquid-holding capacity, texture, and antioxidant content of the meat analogs were assessed, and a sensory evaluation was performed. The meat analog with orange oil had a higher water content than the others, regardless of the amount of added oil, and it had a relatively high liquid-holding capacity. The DPPH(2,2-diphenyl-1-picrylhydrazyl) radical scavenging activity of the meat analog with orange oil was higher than that of the others. The sensory evaluation also showed a decrease in soy odor and an increase in juiciness. Therefore, adding orange oil improves the preference, juiciness, soy odor, and quality of meat analogs. Our results demonstrate that orange oil has positive effects on the productivity of meat analogs and can help to improve meat analog consumption.
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Affiliation(s)
- Youngjae Cho
- Department of Food Science and Technology, Pusan National University, 1268-50 Samrangjin-ro, Miryang 50463, Republic of Korea
| | - Junhwan Bae
- Department of Food Science and Biotechnology of Animal Resources, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Mi-Jung Choi
- Department of Food Science and Biotechnology of Animal Resources, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
- Correspondence: ; Tel.: +82-2-450-3048; Fax: +82-02-455-3726
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Liao JT, Huang YW, Hou CY, Wang JJ, Wu CC, Hsieh SL. D- Limonene Promotes Anti-Obesity in 3T3-L1 Adipocytes and High-Calorie Diet-Induced Obese Rats by Activating the AMPK Signaling Pathway. Nutrients 2023; 15. [PMID: 36678138 DOI: 10.3390/nu15020267] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 12/31/2022] [Accepted: 01/01/2023] [Indexed: 01/07/2023] Open
Abstract
D-limonene (LIM) is a common monoterpene compound, principally found in citrus essential oils. This study investigated the anti-obesity effect of LIM on the 5′-adenosine monophosphate (AMP)-activated protein kinase (AMPK) signaling pathway in 3T3-L1 adipocytes and high-calorie diet-induced obese rats and confirmed the optimally effective dose of LIM. The 3T3-L1 adipocytes were treated with 0.05−0.4 mg/mL LIM for 10 days and oil red O and triglyceride (TG) content were used to determine the levels of lipid accumulation. The results showed that more than 0.05 mg/mL LIM inhibited lipid accumulation by reducing oil red O in 3T3-L1 adipocytes. Masses of 0.2 and 0.4 mg/mL LIM also decreased the TG contents in 3T3-L1 adipocytes. On the other hand, Wistar rats were given high-calorie diets, combined with LLIM (154 mg/kg) and HLIM (1000 mg/kg) treatments, for 16 weeks. The result shows that LLIM and HLIM decreased body weight, total fat tissue weight, and serum low-density lipoprotein-cholesterol (LDLc) levels. HLIM reduced serum TG and increased serum lipase and high-density lipoprotein-cholesterol (HDLc) levels. Moreover, the anti-obesity metabolic pathway showed that LIM (>0.05 mg/mL) in 3T3-L1 adipocytes and LIM (>154 mg/kg) in high-calorie diet-induced obese rats could activate the AMPK signaling pathway. The activated AMPK regulated the mRNA expression related to adipogenesis (PPARγ, C/EBPα, FABP4), lipogenesis (SREBP-1c, ACC, FAS), and lipolysis (ATGL, HSL) to inhibit obesity. This finding demonstrates that LIM has anti-obesity properties. Namely, it is seen that LIM acts by regulating the AMPK signaling pathway in 3T3-L1 adipocytes and high-calorie diet-induced obese rats. In terms of dose−response, LIM (154 mg/kg) would be an optimal effective dose for anti-obesity induced by a high-calorie diet.
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Schroder V, Radu N, Cornea PC, Coman OA, Pirvu LC, Mohammed MSO, Stefaniu A, Pintilie L, Bostan M, Caramihai MD, Roman V. Studies Regarding the Antimicrobial Behavior of Clotrimazole and Limonene. Antibiotics (Basel) 2022; 11:antibiotics11121816. [PMID: 36551473 PMCID: PMC9774930 DOI: 10.3390/antibiotics11121816] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/06/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
The paper presents the results of the studies performed to establish the effect of the mixtures between limonene and clotrimazole against microbial pathogens involved in dermatological diseases, such as Candida albicans, Staphyloccocus aureus, and Escherichia coli. Preliminary data obtained from the studies performed in microplates revealed a possible synergism between the mixture of clotrimazole and limonene for Staphylococcus aureus. Studies performed "in silico" with programs such as CLC Drug Discovery Workbench and MOLEGRO Virtual Docker, gave favorable scores for docking each compound on a specific binding site for each microorganism. The tests performed for validation, with the clotrimazole (0.1%) and different sources of limonene (1.9% citrus essential oils), showed a synergistic effect on Staphylococcus aureus in the case of the mixtures between clotrimazole and the essential oils of Citrus reticulata or Citrus paradisi. The studies performed on Staphylococcus aureus MRSA showed a synergistic effect between clotrimazole and the essential oils obtained from Citrus bergamia, Citrus aurantium, or Citrus paradisi. In the case of Pseudomonas aeruginosa, essential oils and clotrimazole used alone did not exhibit antimicrobial activities, but the mixtures between clotrimazole and the essential oils of Citrus bergamia or Citrus sinensis exhibited a synergistic antimicrobial effect.
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Affiliation(s)
- Verginica Schroder
- Faculty of Pharmacy, University Ovidius of Constanta, 900527 Constanta, Romania
| | - Nicoleta Radu
- Faculty of Biotechnology, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 011464 Bucharest, Romania
- Department of Biotechnology, National Institute of Chemistry and Petrochemistry R&D of Bucharest, 060021 Bucharest, Romania
- Correspondence: (N.R.); (M.B.)
| | - Petruta Calina Cornea
- Faculty of Biotechnology, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 011464 Bucharest, Romania
| | - Oana Andreia Coman
- Faculty of Medicine, University of Medicine and Pharmacy Carol Davila of Bucharest, 020021 Bucharest, Romania
| | - Lucia Camelia Pirvu
- Department of Pharmaceutical Biotechnology, National Institute of Chemical Pharmaceutical R&D of Bucharest, 031299 Bucharest, Romania
| | - Mohammed Shaymaa Omar Mohammed
- Faculty of Biotechnology, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 011464 Bucharest, Romania
| | - Amalia Stefaniu
- Department of Pharmaceutical Biotechnology, National Institute of Chemical Pharmaceutical R&D of Bucharest, 031299 Bucharest, Romania
| | - Lucia Pintilie
- Department of Pharmaceutical Biotechnology, National Institute of Chemical Pharmaceutical R&D of Bucharest, 031299 Bucharest, Romania
| | - Marinela Bostan
- Department of Immunology, National Institute of Pathology and Biomedical Sciences R&D “Victor Babeș’’, 050096 Bucharest, Romania
- Center of Immunology, Institute of Virology Stefan S. Nicolau, 030304 Bucharest, Romania
- Correspondence: (N.R.); (M.B.)
| | - Mihai Dan Caramihai
- Faculty of Computer Sciences, Politehnica University of Bucharest, 060042 Bucharest, Romania
| | - Viviana Roman
- Center of Immunology, Institute of Virology Stefan S. Nicolau, 030304 Bucharest, Romania
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Derdar H, Mitchell GR, Mateus A, Chaibedraa S, Elabed ZO, Mahendra VS, Cherifi Z, Bachari K, Chebout R, Meghabar R, Harrane A, Belbachir M. Green Copolymers and Nanocomposites from Myrcene and Limonene Using Algerian Nano-Clay as Nano-Reinforcing Filler. Polymers (Basel) 2022; 14. [PMID: 36501664 DOI: 10.3390/polym14235271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 11/24/2022] [Accepted: 11/28/2022] [Indexed: 12/07/2022] Open
Abstract
In this work, we report a new facile method for the preparation of myrcene-limonene copolymers and nanocomposites using a Lewis acid as a catalyst (AlCl3) and organo-modified clay as a nano-reinforcing filler. The copolymer (myr-co-lim) was prepared by cationic copolymerization using AlCl3 as a catalyst. The structure of the obtained copolymer is studied and confirmed by Fourier Transform Infrared spectroscopy, Nuclear Magnetic Resonance spectroscopy, and Differential Scanning Calorimetry. By improving the dispersion of the matrix polymer in sheets of the organoclay, Maghnite-CTA+ (Mag-CTA+), an Algerian natural organophilic clay, was used to preparenanocomposites of linear copolymer (myr-co-lim). In order to identify and assess their structural, morphological, and thermal properties, the effect of the organoclay, used in varyingamounts (1, 4, 7, and 10% by weight), and the preparation process were investigated. The Mag-CTA+ is an organophylic montmorillonite silicate clay prepared through a direct exchange process in which they were used as green nano-reinforcing filler. The X-ray diffraction of the resulting nanocomposites revealed a considerable alteration in the interlayer spacing of Mag-CTA+. As a result, interlayer expansion and myr-co-lim exfoliation between layers of Mag-CTA+ were observed. Thermogravimetric analysis provided information on the synthesized nanocomposites' thermal properties. Fourier transform infrared spectroscopy and scanning electronic microscopy, respectively, were used to determine the structure and morphology of the produced nanocomposites (myr-co-lim/Mag). The intercalation of myr-co-lim in the Mag-CTA+ sheets has been supported by the results, and the optimum amount of organoclay needed to create a nanocomposite with high thermal stability is 10% by weight. Finally, a new method for the preparation of copolymer and nanocomposites from myrcene and limonene in a short reaction time was developed.
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Kumar KJS, Vani MG, Wang SY. Limonene protects human skin keratinocytes against UVB-induced photodamage and photoaging by activating the Nrf2-dependent antioxidant defense system. Environ Toxicol 2022; 37:2897-2909. [PMID: 36063024 DOI: 10.1002/tox.23646] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 08/10/2022] [Accepted: 08/15/2022] [Indexed: 06/15/2023]
Abstract
Long term exposure to solar ultraviolet B (UVB) radiation is one of the primary factors of premature skin aging and is referred to as photoaging. Also, mammalian skin exposed to UVB triggers an increase in production of α-melanocyte-stimulating hormone (α-MSH), which is critically involved in the pathogenesis of hyperpigmentary skin diseases. This study investigated the protective effect of limonene on UVB-induced photodamage and photoaging in immortalized human skin keratinocytes (HaCaT) in vitro. Initially, we determined cell viability and levels of reactive oxygen species (ROS) in UVB-irradiated HaCaT cells. Pretreatment with limonene increased cell viability followed by inhibition of intracellular ROS generation in UVB-irradiated HaCaT cells. Interestingly, the antioxidative activity of limonene was directly correlated with an increase in expression of endogenous antioxidants, including heme oxygenase 1 (HO-1), NAD(P)H:quinone oxidoreductase 1 (NQO-1), and γ-glutamylcysteine synthetase (γ-GCLC), which was associated with enhanced nuclear translocation and activation of NF-E2-related factor-2 (Nrf2). Indeed, Nrf2 knockdown reduced limonene's protective effects. Additionally, we observed that limonene treatment inhibited UVB-induced α-MSH secretion followed by inhibition of proopiomelanocortin (POMC) via suppression of p53 transcriptional activation. Moreover, limonene prevented UVB-mediated depletion of tight junction regulatory proteins, including occludin and zonula occludens-1. On the other hand, limonene treatment significantly decreased matrix metalloproteinase-2 levels in UVB-irradiated HaCaT cells. Based on these results, limonene may have a dermato-protective effect in skin cells by activating the Nrf2-dependent cellular antioxidant defense system.
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Affiliation(s)
- K J Senthil Kumar
- Bachelor Program of Biotechnology, National Chung Hsing University, Taichung, Taiwan
| | - M Gokila Vani
- Department of Forestry, National Chung Hsing University, Taichung, Taiwan
| | - Sheng-Yang Wang
- Department of Forestry, National Chung Hsing University, Taichung, Taiwan
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan
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Lin HH, Mendez‐Perez D, Park J, Wang X, Cheng Y, Huo J, Mukhopadhyay A, Lee TS, Shanks BH. Precursor prioritization for p-cymene production through synergistic integration of biology and chemistry. Biotechnol Biofuels 2022; 15:126. [PMCID: PMC9670573 DOI: 10.1186/s13068-022-02226-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 10/02/2022] [Indexed: 11/18/2022]
Abstract
The strategy of synergistic application of biological and chemical catalysis is an important approach for efficiently converting renewable biomass into chemicals and fuels. In particular, the method of determining the appropriate intermediate between the two catalytic methods is critical. In this work, we demonstrate p-cymene production through the integration of biosynthesis and heterogenous catalysis and show how a preferred biologically derived precursor could be determined. On the biological side, we performed the limonene and 1,8-cineole production through the mevalonate pathway. Titers of 0.605 g/L and a 1.052 g/L were achieved, respectively. This difference is in agreement with the toxicity of these compounds toward the producing microorganisms, which has implications for subsequent development of the microbial platform. On the heterogeneous catalysis side, we performed the reaction with both biological precursors to allow for direct comparison. Using hydrogenation/dehydrogenation metals on supports with acid sites, both limonene and 1,8-cineole were converted to p-cymene with similar yields under equivalent reaction conditions. Thus, we could determine that the most promising strategy would be to target 1,8-cineole, the higher titer and lower toxicity bio-derived precursor with subsequent catalytic conversion to p-cymene. We further optimized the biological production of 1,8-cineole via fed-batch fermentation and reached the titer of 4.37 g/L which is the highest known 1,8-cineole titer from microbial production. This work provides a valuable paradigm for early stage considerations to determine the best route for the high-efficiency production of a target biobased molecule using an integration of biology and chemistry.
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Affiliation(s)
- Hsi-Hsin Lin
- grid.34421.300000 0004 1936 7312Department of Chemical and Biological Engineering, Iowa State University, Ames, IA 50011 USA ,grid.34421.300000 0004 1936 7312Center for Biorenewable Chemicals (CBiRC), Iowa State University, Ames, IA 50011 USA ,grid.451372.60000 0004 0407 8980Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, CA 94608 USA
| | - Daniel Mendez‐Perez
- grid.451372.60000 0004 0407 8980Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, CA 94608 USA ,grid.184769.50000 0001 2231 4551Biological Systems & Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA
| | - Jimin Park
- grid.451372.60000 0004 0407 8980Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, CA 94608 USA ,grid.47840.3f0000 0001 2181 7878Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA 94720 USA
| | - Xi Wang
- grid.451372.60000 0004 0407 8980Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, CA 94608 USA ,grid.184769.50000 0001 2231 4551Biological Systems & Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA
| | - Yan Cheng
- grid.34421.300000 0004 1936 7312Department of Chemical and Biological Engineering, Iowa State University, Ames, IA 50011 USA ,grid.34421.300000 0004 1936 7312Center for Biorenewable Chemicals (CBiRC), Iowa State University, Ames, IA 50011 USA
| | - Jiajie Huo
- grid.34421.300000 0004 1936 7312Department of Chemical and Biological Engineering, Iowa State University, Ames, IA 50011 USA ,grid.34421.300000 0004 1936 7312Center for Biorenewable Chemicals (CBiRC), Iowa State University, Ames, IA 50011 USA
| | - Aindrila Mukhopadhyay
- grid.451372.60000 0004 0407 8980Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, CA 94608 USA ,grid.184769.50000 0001 2231 4551Biological Systems & Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA
| | - Taek Soon Lee
- grid.451372.60000 0004 0407 8980Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, CA 94608 USA ,grid.184769.50000 0001 2231 4551Biological Systems & Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA
| | - Brent H. Shanks
- grid.34421.300000 0004 1936 7312Department of Chemical and Biological Engineering, Iowa State University, Ames, IA 50011 USA ,grid.34421.300000 0004 1936 7312Center for Biorenewable Chemicals (CBiRC), Iowa State University, Ames, IA 50011 USA ,grid.451372.60000 0004 0407 8980Joint BioEnergy Institute, 5885 Hollis Street, Emeryville, CA 94608 USA
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Espinoza LC, Valarezo E, Fábrega MJ, Rodríguez-Lagunas MJ, Sosa L, Calpena AC, Mallandrich M. Characterization and In Vivo Anti-Inflammatory Efficacy of Copal ( Dacryodes peruviana (Loes.) H.J. Lam) Essential Oil. Plants (Basel) 2022; 11:plants11223104. [PMID: 36432834 PMCID: PMC9696342 DOI: 10.3390/plants11223104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/06/2022] [Accepted: 11/07/2022] [Indexed: 06/01/2023]
Abstract
Essential oils are natural aromatic substances that contain complex mixtures of many volatile compounds frequently used in pharmaceutical and cosmetic industries. Dacryodes peruviana (Loes.) H.J. Lam is a native species from Ecuador whose anti-inflammatory activity has not been previously reported, thus the aim of this study was to evaluate the anti-inflammatory activity of D. peruviana essential oil. To that end, essential oil from D. peruviana fruits was isolated by hydrodistillation and characterized physically and chemically. The tolerance of the essential oil was analyzed by cytotoxicity studies using human keratinocytes. The anti-inflammatory activity was evaluated by an arachidonic acid-induced edema model in mouse ear. The predominant compounds in D. peruviana essential oil were α-phellandrene, limonene, and α-pinene, with the three compounds reaching approximately 83% of the total composition. Tolerance studies showed high biocompatibility of this essential oil with human keratinocytes. In vivo studies demonstrated a moisturizing effect and an alleviation of several events occurred during the inflammatory process after topical treatment with D. peruviana essential oil such as decline in skin edema; reduction in leukocytic infiltrate; and decrease in inflammatory cytokines TNFα, IL-8, IL-17A, and IL-23. Therefore, this essential oil could be an attractive treatment for skin inflammation.
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Affiliation(s)
- Lupe Carolina Espinoza
- Departamento de Química, Universidad Técnica Particular de Loja, Loja 1101608, Ecuador
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028 Barcelona, Spain
| | - Eduardo Valarezo
- Departamento de Química, Universidad Técnica Particular de Loja, Loja 1101608, Ecuador
| | - María José Fábrega
- Department of Experimental and Health Sciences, Parc of Biomedic Research of Barcelona, Pompeu Fabra University, 08003 Barcelona, Spain
| | - María José Rodríguez-Lagunas
- Department of Biochemistry and Physiology, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain
- Nutrition and Food Safety Research Institute (INSA-UB), 08921 Santa Coloma de Gramenet, Spain
| | - Lilian Sosa
- Pharmaceutical Technology Research Group, Faculty of Chemical Sciences and Pharmacy, National Autonomous University of Honduras (UNAH), Tegucigalpa 11101, Honduras
| | - Ana Cristina Calpena
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028 Barcelona, Spain
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain
| | - Mireia Mallandrich
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028 Barcelona, Spain
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain
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Liao M, Li S, Wu H, Gao Q, Shi S, Huang Y, Cao H. Transcriptomic analysis of Sitophilus zeamais in response to limonene fumigation. Pest Manag Sci 2022; 78:4774-4782. [PMID: 35900300 DOI: 10.1002/ps.7097] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 07/04/2022] [Accepted: 07/24/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Frequent application of chemical fumigants has contributed to the development of resistance in stored-product pests. Essential oils provide a novel and environmentally friendly alternative to conventional chemical pesticides. In this work, the fumigant activity of Taxodium 'zhongshansha' essential oil (TZEO) and main active components against Sitophilus zeamais were evaluated. In addition, the molecular mechanisms mediating the fumigant activity of limonene were assessed. RESULTS TZEO showed strong fumigant activity against Sitophilus zeamais, with a 50% lethal concentration (LC50 ) of 22.90 μL L-1 air in 24 h. The main components of TZEO were identified using gas chromatography-mass spectrometry, the main active ingredient (limonene) showed an LC50 of 9.93 μL L-1 air in 24 h which had a serious dose-time-effect. The LC50 value of the positive control (aluminum phosphide) was 1.91 μL L-1 . In total, 3982 up-regulated and 3067 down-regulated genes were sequenced in limonene-fumigated Sitophilus zeamais, the genes related to metabolic detoxification were significantly enriched. The mortality rate of 7 day-old Sitophilus zeamais adult mediated with knockdown of SzCYP6MS5 and SzCYP6MS6 raised up to 65.67% and 67.65% after fumigation with limonene in 24 h, respectively. The results showed that SzCYP6MS5 and SzCYP6MS6 are closely involved to the detoxification of limonene. CONCLUSION In this study, candidate genes affected by limonene treatment in Sitophilus zeamais were identified. These findings provided insights into the systemic metabolic response of Sitophilus zeamais to limonene and established a basis for the development of limonene as a botanical pesticide for the control of stored-product pests. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Min Liao
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei, China
- Anhui Province Key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Shengnan Li
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Hailong Wu
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Quan Gao
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei, China
- Anhui Province Key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Su Shi
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Yong Huang
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei, China
- Anhui Province Key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei, China
| | - Haiqun Cao
- Anhui Province Engineering Laboratory for Green Pesticide Development and Application, School of Plant Protection, Anhui Agricultural University, Hefei, China
- Anhui Province Key Laboratory of Crop Integrated Pest Management, School of Plant Protection, Anhui Agricultural University, Hefei, China
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Zhang J, Shin J, Tague N, Lin H, Zhang M, Ge X, Wong W, Dunlop MJ, Cheng J. Visualization of a Limonene Synthesis Metabolon Inside Living Bacteria by Hyperspectral SRS Microscopy. Adv Sci (Weinh) 2022; 9:e2203887. [PMID: 36169112 PMCID: PMC9661820 DOI: 10.1002/advs.202203887] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/21/2022] [Indexed: 06/16/2023]
Abstract
Monitoring biosynthesis activity at single-cell level is key to metabolic engineering but is still difficult to achieve in a label-free manner. Using hyperspectral stimulated Raman scattering imaging in the 670-900 cm-1 region, localized limonene synthesis are visualized inside engineered Escherichia coli. The colocalization of limonene and GFP-fused limonene synthase is confirmed by co-registered stimulated Raman scattering and two-photon fluorescence images. The finding suggests a limonene synthesis metabolon with a polar distribution inside the cells. This finding expands the knowledge of de novo limonene biosynthesis in engineered bacteria and highlights the potential of SRS chemical imaging in metabolic engineering research.
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Affiliation(s)
- Jing Zhang
- Department of Biomedical EngineeringBoston UniversityBostonMA02215USA
- Photonics CenterBoston UniversityBostonMA02215USA
| | - Jonghyeon Shin
- Department of Biomedical EngineeringBoston UniversityBostonMA02215USA
| | - Nathan Tague
- Department of Biomedical EngineeringBoston UniversityBostonMA02215USA
- Biological Design CenterBoston UniversityBostonMA02215USA
| | - Haonan Lin
- Department of Biomedical EngineeringBoston UniversityBostonMA02215USA
- Photonics CenterBoston UniversityBostonMA02215USA
| | - Meng Zhang
- Photonics CenterBoston UniversityBostonMA02215USA
- Department of Electrical and Computer EngineeringBoston UniversityBostonMA02215USA
| | - Xiaowei Ge
- Photonics CenterBoston UniversityBostonMA02215USA
- Department of Electrical and Computer EngineeringBoston UniversityBostonMA02215USA
| | - Wilson Wong
- Department of Biomedical EngineeringBoston UniversityBostonMA02215USA
- Biological Design CenterBoston UniversityBostonMA02215USA
| | - Mary J. Dunlop
- Department of Biomedical EngineeringBoston UniversityBostonMA02215USA
- Biological Design CenterBoston UniversityBostonMA02215USA
| | - Ji‐Xin Cheng
- Department of Biomedical EngineeringBoston UniversityBostonMA02215USA
- Photonics CenterBoston UniversityBostonMA02215USA
- Department of Electrical and Computer EngineeringBoston UniversityBostonMA02215USA
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Chandrasekaran U, Byeon S, Kim K, Kim SH, Park CO, Han AR, Lee YS, Kim HS. Short-term severe drought influences root volatile biosynthesis in eastern white pine (Pinus strobus L). Front Plant Sci 2022; 13:1030140. [PMID: 36388508 PMCID: PMC9644029 DOI: 10.3389/fpls.2022.1030140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
Climate change-related drought stress is expected to shift carbon partitioning toward volatile organic compound (VOC) biosynthesis. The effect of drought stress on VOC synthesis remains unknown in several tree species. Therefore, we exposed eastern white pine (Pinus strobus) plants to severe drought for 32 days and performed physiological analysis (chlorophyll content, leaf water content, and root/shoot index), biochemical analysis (non-structural carbohydrates, proline, lipid peroxidation, and antioxidant assay), and total root VOC analysis. Drought stress decreased the relative water and soil moisture contents. Root proline accumulation and antioxidant activity increased significantly, whereas leaf chlorophyll synthesis and fresh weight decreased significantly in drought-treated plants. A non-significant increase in sugar accumulation (leaves and roots), proline accumulation (leaves), antioxidant activity (leaves), and lipid peroxidation (leaves and roots) was observed in drought-treated plants. Drought stress caused a non-significant decline in root/shoot ratio and starch accumulation (leaves and roots) and caused a significant increase in root abscisic acid content. Drought-treated plants showed an increase in overall monoterpene synthesis (16%) and decline in total sesquiterpene synthesis (3%). Our findings provide an overall assessment of the different responses of VOC synthesis to severe water deficit that may help unravel the molecular mechanisms underlying drought tolerance in P. strobus.
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Affiliation(s)
- Umashankar Chandrasekaran
- Department of Agriculture, Forestry and Bioresources, College of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
- Research Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
| | - Siyeon Byeon
- Department of Agriculture, Forestry and Bioresources, College of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
| | - Kunhyo Kim
- Department of Agriculture, Forestry and Bioresources, College of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
| | - Seo Hyun Kim
- Department of Agriculture, Forestry and Bioresources, College of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
| | - Chan Oh Park
- Department of Agriculture, Forestry and Bioresources, College of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
| | - Ah reum Han
- Division of Basic Research, National Institute of Ecology, Seocheon-gun, South Korea
| | - Young-Sang Lee
- Division of Basic Research, National Institute of Ecology, Seocheon-gun, South Korea
| | - Hyun Seok Kim
- Department of Agriculture, Forestry and Bioresources, College of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
- Research Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
- Interdisciplinary Program in Agricultural and Forest Meteorology, College of Agriculture and Life Sciences, Seoul National University, Seoul, South Korea
- National Center for Agro Meteorology, Seoul, South Korea
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Bouabdallah S, Cianfaglione K, Azzouz M, Batiha GES, Alkhuriji AF, Al-Megrin WAI, Ben-Attia M, Eldahshan OA. Sustainable Extraction, Chemical Profile, Cytotoxic and Antileishmanial Activities In-Vitro of Some Citrus Species Leaves Essential Oils. Pharmaceuticals (Basel) 2022; 15:ph15091163. [PMID: 36145384 PMCID: PMC9501829 DOI: 10.3390/ph15091163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 09/09/2022] [Accepted: 09/09/2022] [Indexed: 11/16/2022] Open
Abstract
Anti-leishmanial drugs extracted from natural sources have not been sufficiently explored in the literature. Until now, leishmaniasis treatments have been limited to synthetic and expensive drugs. This study investigated, for the first time, the anti-leishmanial efficacy of essential oils (EOs) from the leaves of Citrus species (C. sinensis, C. limon, and C. clementina). Essential oils were extracted from three species by solvent free microwave extraction (SFME); in addition, lemon oil was also isolated by hydro-distillation (HD). These were investigated using gas chromatography coupled with mass spectrometry (GC–MS) and evaluated against Leishmania species, namely Leishmania major and Leishmania infantum, using a mitochondrial tetrazolium test (MTT) assay. The chemical compositions of Citrus limon EOs obtained by HD and SFME showed some differences. The identified peaks of C. limon (SFME) represented 93.96%, where linalool was the major peak (44.21%), followed by sabinene (14.22%) and ocimene (6.09%). While the hydro-distilled oil of C. limon contained geranial (30.08%), limonene (27.09%), and neral (22.87%) in the identified peaks (96.67%). The identified components of C. clementina leaves oil (68.54%) showed twenty-six compounds, where the predominant compound was geranial (42.40%), followed by neral (26.79%) and limonene (14.48%). However, 89.82% C. sinensis oil was identified, where the major peaks were for neral (27.52%), linalool (25.83%), and geranial (23.44%). HD oil of lemon showed the highest activity against L. major, with moderate toxicity on murine macrophage (RAW 264.7) cells, and possessed the best selectivity index on both Leishmanial species (SI: 3.68; 6.38), followed by C. clementina oil and C. limon using SFME (0.9 ± 0.29, 1.03 ± 0.27, and 1.13 ± 0.3), respectively. C. clementina oil induced the greatest activity on Leishmania infantum, followed by HD lemon and SFME lemon oils (0.32 ± 0.18, 0.52 ± 0.15, and 0.57 ± 0.09, respectively) when compared to Amphotericin B (0.80 ± 0.18 and 0.23 ± 0.13) as a positive control, on both species, respectively. Our study suggests a potent anti-leishmanial activity of lemon oil (HD) on L. major, followed by C. clementina. With the same potency on L. infantum shown by C. clementina oil, followed by HD lemon oil. This effect could be attributed to the major compounds of limonene, citral, and neral, as well as the synergistic effect of other different compounds. These observations could be a starting point for the building of new anti-leishmanial drugs from natural origins, and which combine different EOs containing Citrus cultivars.
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Affiliation(s)
- Salwa Bouabdallah
- Environmental Biomonitoring Laboratory LBE (LR01/ES14), Faculty of Sciences Bizerta, Carthage University, Zarzouna 7021, Tunisia
- Correspondence: (S.B.); (O.A.E.)
| | | | - Myriam Azzouz
- Department of Mathematics Computer Science, Paris Dauphine University, F-75016 Paris, France
- Multiverse Computing 170, 20014 Donostia-San Sebastian, Spain
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, Egypt
| | - Afrah Fahad Alkhuriji
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Wafa Abdullah I. Al-Megrin
- Department of Biology, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Mossadok Ben-Attia
- Environmental Biomonitoring Laboratory LBE (LR01/ES14), Faculty of Sciences Bizerta, Carthage University, Zarzouna 7021, Tunisia
| | - Omayma A. Eldahshan
- Pharmacognosy Department, Faculty of Pharmacy, Ain Shams University, Cairo 11566, Egypt
- Correspondence: (S.B.); (O.A.E.)
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Jian R, Lin Y, Li Y, Wu W, Ren X, Liang Z, Kong L, Cai J, Lao C, Wu M, Chen W, Chen J, Hong WD, Sheng Z. Larvicidal Activity of Two Rutaceae Plant Essential Oils and Their Constituents Against Aedes albopictus (Diptera: Culicidae) in Multiple Formulations. J Med Entomol 2022; 59:1669-1677. [PMID: 35786778 DOI: 10.1093/jme/tjac083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Indexed: 06/15/2023]
Abstract
Aedes albopictus (Skuse) is a vector of several arboviruses, such as dengue, chikungunya, West Nile, and Zika viruses. At present, the use of synthetic insecticides is the main vector control strategy. However, the widespread and long-term use of insecticides has aroused several problems, including insecticide resistance, environmental pollution, and non-target species effects, thereby encouraging researchers to search for new alternatives derived from natural products. In recent decades, essential oils (EOs) as natural alternatives to control mosquitoes have received increasing attention. In the initial larvicidal activity screen, two Rutaceae plants (Citrus aurantium and Citrus paradisi) EOs were selected and evaluated for killing Ae. albopictus larvae. The LC50 values of C. aurantium and C. paradisi EOs against Ae. albopictus were 91.7 and 100.9 ppm, respectively. The main components of C. aurantium EO include diethyl o-phthalate (37.32%), limonene (10.04%), and methyl dihydrojasmonate (6.48%). The main components of C. paradisi EO include limonene (60.51%), diethyl o-phthalate (11.75%), linalool (7.90%), and styralyl acetate (6.28%). Among these main components of the two EOs, limonene showed potent larvicidal activity, with the LC50 value of 39.7 ppm. The nanoemulsions of limonene were prepared and characterized. The duration of larvicidal activity was greater in the limonene nanoemulsions than when limonene was applied in solvent. This study demonstrates that EOs of plants in family Rutaceae are a potential resource to develop new larvicides, and nanoemulsification is an effective method for improving the physicochemical properties and efficacy of natural products as larvicides.
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Affiliation(s)
- Rongchao Jian
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P.R. China
| | - Yuan Lin
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P.R. China
| | - Yuling Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P.R. China
| | - Weifeng Wu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P.R. China
| | - Xiaofei Ren
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P.R. China
| | - Zhanyuan Liang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P.R. China
| | - Lingjia Kong
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P.R. China
| | - Jinglin Cai
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P.R. China
| | - Canyao Lao
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P.R. China
| | - Min Wu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P.R. China
| | - Wenhua Chen
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P.R. China
| | - Jing Chen
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P.R. China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529020, P.R. China
| | - Weiqian David Hong
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P.R. China
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, UK
- Vector Biology, Liverpool School of Tropical Medicine, Liverpool L3 5QA, UK
| | - Zhaojun Sheng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P.R. China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529020, P.R. China
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48
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Sicard RM, Shah R, Frank-Ito DO. Analyses on the influence of normal nasal morphological variations on odorant transport to the olfactory cleft. Inhal Toxicol 2022; 34:350-358. [PMID: 36045580 PMCID: PMC9799026 DOI: 10.1080/08958378.2022.2115175] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 08/07/2022] [Indexed: 12/31/2022]
Abstract
OBJECTIVE Olfaction requires a combination of sensorineural components and conductive components, but conductive mechanisms have not typically received much attention. This study investigates the role of normal nasal vestibule morphological variations in ten healthy subjects on odorant flux in the olfactory cleft. MATERIALS AND METHODS Computed tomography images were used to create subject-specific nasal models. Each subject's unilateral nasal cavity was classified according to its nasal vestibule shape as Standard or Notched. Inspiratory airflow simulations were performed at 15 L/min, simulating resting inspiration using computational fluid dynamics modeling. Odorant transport simulations for three odorants (limonene, 2,4-dinitrotoluene, and acetaldehyde) were then performed at concentrations of 200 ppm for limonene and acetaldehyde, and 0.2 ppm for dinitrotoluene. Olfactory cleft odorant flux was computed for each simulation. RESULTS AND DISCUSSION AND CONCLUSION Simulated results showed airflow in the olfactory cleft was greater in the Standard phenotype compared to the Notched phenotype. For Standard, median airflow was greatest in the anterior region (0.5006 L/min) and lowest in the posterior region (0.1009 L/min). Median airflow in Notched was greatest in the medial region (0.3267 L/min) and lowest in the posterior region (0.0756 L/min). Median olfactory odorant flux for acetaldehyde and limonene was greater in Standard (Acetaldehyde: Standard = 140.45 pg/cm2-s; Notched = 122.20 pg/cm2-s. Limonene: Standard = 0.67 pg/cm2-s; Notched = 0.65 pg/cm2-s). Median dinitrotoluene flux was greater in Notched (Standard = 2.86 × 10-4pg/cm2-s; Notched = 4.29 × 10-4 pg/cm2-s). The impact of nasal vestibule morphological variations on odorant flux at the olfactory cleft may have implications on individual differences in olfaction, which should be investigated further.
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Affiliation(s)
- Ryan M. Sicard
- Department of Head and Neck Surgery & Communication Sciences, Duke University Medical Center, Durham, NC, USA
| | - Reanna Shah
- Department of Head and Neck Surgery & Communication Sciences, Duke University Medical Center, Durham, NC, USA
| | - Dennis O. Frank-Ito
- Department of Head and Neck Surgery & Communication Sciences, Duke University Medical Center, Durham, NC, USA
- Computational Biology & Bioinformatics PhD Program, Duke University, Durham, NC, USA
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC, USA
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49
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Faccia M, Maggiolino A, Natrella G, Zizzadoro C, Mazzone A, Poulopoulou I, Bragaglio A, De Palo P. Ingested versus inhaled limonene in sheep: A pilot study to explore potential different transfer to the mammary gland and effects on milk and Caciotta cheese aroma. J Dairy Sci 2022; 105:8143-8157. [PMID: 36028343 DOI: 10.3168/jds.2022-22016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 06/07/2022] [Indexed: 11/19/2022]
Abstract
Concentration is a key determinant in the overall positive impact of terpenes on milk and cheese aroma; additionally, route of intake may affect the achievable concentrations of dietary terpenes in milk and cheese. In this study, we explored the possibility that the amount of the monoterpene limonene transferred to sheep milk and its corresponding cheese could differ depending on the route of intake and that the aroma profile of these products could also differ. To this aim, 12 lactating dairy ewes were repeatedly exposed to limonene by the oral or respiratory route during a 48-h test period, according to a 3 × 3 Latin square experimental design. Limonene content was measured in individual and bulk milk samples, in 1-d-old and 15-d-old Caciotta cheese obtained from that milk, in the related whey and curd, and in the air inhaled by the ewes in the respiratory treatment group (to obtain an estimate of the dose actually supplied by this route). Bulk milk and fresh (1-d-old) cheese underwent sensory analysis by ortho-olfactory evaluation. Both intake routes demonstrated transfer of limonene to milk, but the respiratory route transferred limonene with greater efficiency than the oral route. Moreover, according to the protocol used in this study, a short period of respiratory exposure induced a slightly higher limonene content in milk compared with oral exposure. As to the fate of limonene during cheesemaking, an important part of it was lost into the whey, perhaps through volatilization. The differences between milk and cheese tended to dissipate in curd and fresh cheese and disappeared completely after 15 d of ripening. Finally, it was possible to distinguish between the 2 routes of limonene intake using sensory analysis, even though no direct relationship was identified between the different aroma profiles of milks and cheeses from the oral and respiratory groups and their respective limonene contents. Overall, our results expand current knowledge on the biological pathways of terpene transfer from feed to sheep milk and cheese, as well as on the role played by terpenes in the formation of aroma in these products. Our observations may contribute to future development of strategies for external control and better standardization of the presence of odor compounds in milk and cheese from dairy ruminants.
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Affiliation(s)
- M Faccia
- Department of Soil, Plant and Food Sciences, University of Bari A. Moro, 70121 Bari, Italy
| | - A Maggiolino
- Department of Veterinary Medicine, University of Bari A. Moro, 70010 Valenzano, Italy.
| | - G Natrella
- Department of Soil, Plant and Food Sciences, University of Bari A. Moro, 70121 Bari, Italy
| | - C Zizzadoro
- Department of Veterinary Medicine, University of Bari A. Moro, 70010 Valenzano, Italy
| | - A Mazzone
- Order of Chemists of Bari, 70121 Bari, Italy
| | - I Poulopoulou
- Free University of Bozen-Bolzano, 39100 Bolzano, Italy
| | - A Bragaglio
- Department of Veterinary Medicine, University of Bari A. Moro, 70010 Valenzano, Italy
| | - P De Palo
- Department of Veterinary Medicine, University of Bari A. Moro, 70010 Valenzano, Italy
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Ryzhkov AI, Drozdov FV, Cherkaev GV, Muzafarov AM. Synthesis of Carbosilane and Carbosilane-Siloxane Dendrons Based on Limonene. Polymers (Basel) 2022; 14:3279. [PMID: 36015536 DOI: 10.3390/polym14163279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 08/09/2022] [Accepted: 08/10/2022] [Indexed: 11/16/2022] Open
Abstract
In this work, carbosilane dendrons of the first, second, and third generations were obtained on the basis of a natural terpenoid, limonene. Previously, we have shown the possibility of selective hydrosilylation and hydrothiolation of limonene. It is proved that during hydrosilylation, only the isoprenyl double bond reacts, while the cyclohexene double bond does not undergo into the hydrosilylation reaction. However, the cyclohexene double bond reacts by hydrothiolation. This selectivity makes it possible to use limonene as a dendron growth center, while maintaining a useful function—a double bond at the focal point. Thus, the sequence of hydrosilylation and Grignard reactions based on limonene formed carbosilane dendrons. After that, the end groups were blocked by heptamethyltrisiloxane or butyllithium. The obtained substances were characterized using NMR spectroscopy, elemental analysis and GPC. Thus, the proposed methodology for the synthesis of carbosilane dendrons based on the natural terpenoid limonene opens up wide possibilities for obtaining various macromolecules: dendrimers, Janus dendrimers, dendronized polymers, and macroinitiators.
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