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Sabry BA, Badr AN, Mohammed DM, Desoukey MA, Farouk A. Validating the protective role of orange and tangerine peel extracts foramending food safety against microorganisms' contamination using molecular docking. Heliyon 2024; 10:e27737. [PMID: 38509881 PMCID: PMC10950677 DOI: 10.1016/j.heliyon.2024.e27737] [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: 06/08/2023] [Revised: 12/02/2023] [Accepted: 03/06/2024] [Indexed: 03/22/2024] Open
Abstract
Latest studies indicated that agro-food wastes are considered renewable sources of bioactive compounds. This investigation aimed to utilize natural extracts of citrus peels as antimicrobial and anti-aflatoxigenic agents for food safety. The bioactivity of two citrus peels was assessed by total phenolic, flavonoids, and antioxidant activity. Nanoemulsions were manufactured using high-speed homogenization. The mean particle size of the nanoemulsions ranged from 29.41 to 66.41 nm with a polydispersity index of 0.11-0.16. The zeta potential values ranged from -14.27 to -26.74 mV, indicating stability between 81.44% and 99.26%. The orange peel extract showed the highest contents of total phenolic and flavonoids compared to the other extracts and nanoemulsions (39.54 mg GAE/g and 79.54 mg CE/100 g, respectively), which agreed with its potential antioxidant activity performed by DPPH free radical-scavenging and ABTS assays. Chlorogenic, caffeic, ferulic, and catechin were the dominant phenolic acids in the extracts and nanoemulsions, while quercitrin, rutin, and hesperidin were the most abundant flavonoids. Limonene was the major volatile component in both oils; however, it was reduced dramatically from 92.52% to 76.62% in orange peel oil and from 91.79 to 79.12% in tangerine peel oil. Consistent with the differences in phenolics, flavonoids, and volatiles between orange and tangerine peel extracts, the antibacterial properties of orange extracts had more potential than tangerine ones. Gram-positive bacteria were more affected by all the examined extracts than Gram-negative ones. The antifungal activity of orange extract and nanoemulsion on seven fungal strains from Aspergillus spp had more potential than tangerine extracts. Additionally, using a simulated media, the orange peel extract and its nanoemulsion had a more anti-aflatoxigenic influence. Molecular docking confirmed the high inhibitory action of flavonoids, especially hesperidin, on the polyketide synthase (-9.3 kcal/mol) and cytochrome P450 monooxygenase (-10.1 kcal/mol) key enzymes of the aflatoxin biosynthetic mechanism.
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Affiliation(s)
- Bassem A. Sabry
- Food Toxicology and Contaminants Department, National Research Centre, Dokki, Cairo, 12622, Egypt
| | - Ahmed Noah Badr
- Food Toxicology and Contaminants Department, National Research Centre, Dokki, Cairo, 12622, Egypt
| | - Dina Mostafa Mohammed
- Nutrition and Food Sciences Department, National Research Centre, Dokki, Cairo, 12622, Egypt
| | - Marwa A. Desoukey
- Nutrition and Food Sciences Department, National Research Centre, Dokki, Cairo, 12622, Egypt
| | - Amr Farouk
- Flavour and Aroma Chemistry Department, National Research Centre, Dokki, Cairo, 12622, Egypt
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Praipipat P, Ngamsurach P, Srirat P, Chaiphumee P. Engineered biosorbents of pomelo (Citrus maxima (Burm.f.) Merr) peels modified with zinc oxide and titanium dioxide for methylene blue dye sorption. Sci Rep 2024; 14:5763. [PMID: 38459253 PMCID: PMC10923827 DOI: 10.1038/s41598-024-56499-z] [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: 12/23/2023] [Accepted: 03/07/2024] [Indexed: 03/10/2024] Open
Abstract
The pomelo-doped zinc oxide beads (PZB), pomelo-doped titanium dioxide beads (PTB), and pomelo-doped zinc oxide and titanium dioxide beads (PZTB) were synthesized for sorbing methylene blue (MB) dye. Their characterizations were explored by X-Ray Diffractometer (XRD), Field Emission Scanning Electron Microscopy and Focus Ion Beam (FESEM-FIB), Energy Dispersive X-Ray Spectrometer (EDX), and Fourier Transform Infrared Spectroscopy (FT-IR). In addition, their sorbent efficiencies for sorbing MB dye were investigated through batch experiments, sorbent reusability studies, sorption isotherms, kinetics, and thermodynamic studies. They were crystalline phases presenting the specific peaks of zinc oxide (ZnO) or titanium dioxide (TiO2). Their surfaces had lamella structures with coarse surfaces, and they also found specific structures of ZnO or TiO2 on the surfaces. Zn-O or Ti-O-Ti was also detected in PZB or PTB or, PZTB depending upon metal oxide types added into pomelo beaded sorbents. For batch experiments, they could adsorb MB dye of more than 86%, and PZTB showed the highest MB dye removal efficiency. In addition, they could be reused for more than three cycles with high MB dye sorptions of more than 72%. They corresponded to Freundlich and pseudo-second-order kinetic models. Moreover, the increasing temperature affected their decreasing MB dye sorptions which were exothermic processes.
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Affiliation(s)
- Pornsawai Praipipat
- Department of Environmental Science, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand.
- Environmental Applications of Recycled and Natural Materials (EARN) Laboratory, Khon Kaen University, Khon Kaen, 40002, Thailand.
| | - Pimploy Ngamsurach
- Department of Environmental Science, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
- Environmental Applications of Recycled and Natural Materials (EARN) Laboratory, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Pratchayaporn Srirat
- Department of Environmental Science, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Punjaporn Chaiphumee
- Department of Environmental Science, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
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Yu S, Zhao Y, Li L, Zhao H, Liu M, Jiang L. Flavonoids from citrus peel display potential synergistic effects on inhibiting rumen methanogenesis and ammoniagenesis: a microbiome perspective. Environ Sci Pollut Res Int 2024; 31:21208-21223. [PMID: 38383931 DOI: 10.1007/s11356-024-32509-5] [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: 10/27/2023] [Accepted: 02/13/2024] [Indexed: 02/23/2024]
Abstract
Flavonoids have been recognized as potential phytochemicals to reduce enteric methane (CH4) production and improve rumen nitrogen efficiency in ruminants. We evaluated whether naringin, hesperidin, their combination, or a mixed citrus flavonoid extract (CFE) as additives can inhibit methanogenesis and ammoniagenesis in dairy cows using an in vitro rumen batch refermentation system. The rumen inocula from dairy cows were incubated in batch cultures with five groups: no addition (CON), hesperidin (20 g/kg DM), naringin (20 g/kg DM), hesperidin + naringin (10 g/kg DM of hesperidin + 10 g/kg DM of naringin), and CFE (20 g/kg DM). The combination of naringin plus hesperidin and CFE achieved greater reductions in CH4 and ammonia production compared to either naringin or hesperidin alone. Microbiome analysis revealed that the decrease in CH4 emissions may have been caused by both the direct inhibitory impact of citrus flavonoids on Methanobrevibacter and a simultaneous decrease in protozoa Isotricha abundance. The relatively lower proportion of Entodinium in naringin plus hesperidin or CFE was responsible for the lower ammonia concentration. These results suggest that citrus flavonoids possess potential synergistic effects on mitigating ruminal CH4 emissions by cows and improving nitrogen utilization.
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Affiliation(s)
- Shiqiang Yu
- Beijing Key Laboratory of Dairy Cow Nutrition, Animal Science and Technology College, Beijing University of Agriculture, No.7 Beinong Road, Changping District, Beijing, 102206, China
- Laboratory of Gastrointestinal Microbiology, Jiangsu Key Laboratory of Gastrointestinal Nutrition and Animal Health, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yuchao Zhao
- Beijing Key Laboratory of Dairy Cow Nutrition, Animal Science and Technology College, Beijing University of Agriculture, No.7 Beinong Road, Changping District, Beijing, 102206, China
| | - Liuxue Li
- Beijing Key Laboratory of Dairy Cow Nutrition, Animal Science and Technology College, Beijing University of Agriculture, No.7 Beinong Road, Changping District, Beijing, 102206, China
| | - Huiying Zhao
- Beijing Key Laboratory of Dairy Cow Nutrition, Animal Science and Technology College, Beijing University of Agriculture, No.7 Beinong Road, Changping District, Beijing, 102206, China
| | - Ming Liu
- Beijing Key Laboratory of Dairy Cow Nutrition, Animal Science and Technology College, Beijing University of Agriculture, No.7 Beinong Road, Changping District, Beijing, 102206, China
| | - Linshu Jiang
- Beijing Key Laboratory of Dairy Cow Nutrition, Animal Science and Technology College, Beijing University of Agriculture, No.7 Beinong Road, Changping District, Beijing, 102206, China.
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Şimşek İ, Bahadir T, Çelebi H, Tulun Ş. Selective adsorption of single and binary dyestuffs by citrus peel: Characterization, and adsorption performance. Chemosphere 2024; 352:141475. [PMID: 38367873 DOI: 10.1016/j.chemosphere.2024.141475] [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: 12/11/2023] [Revised: 02/05/2024] [Accepted: 02/14/2024] [Indexed: 02/19/2024]
Abstract
The powdered citrus peel, which has been replaced with sodium hydroxide, was used in this study to test how well methylene blue and reactive black 5 dyestuff absorbed one or both. To find out about the texture and surface chemistry of modified citrus peel, Fourier transform infrared spectroscopy and scanning electron microscope analyses were carried out. Fourier transform infrared spectroscopy data revealed the presence of amphoteric radicals on the modified citrus peel surface, indicating the effective adsorption of methylene blue and reactive black 5. Many parameters affecting the batch adsorption process, such as modified citrus peel dose (0.1-0.5 g), pH (2-10), time (20-80 min), stirring speed (60-180 rpm), and temperature (20-45 °C), were studied. It is seen that the physical effect is at the forefront, homogeneous monolayer adsorption occurs, and the process fits the Langmuir and pseudo first order models for dyestuffs. Thermodynamic modeling showed that the adsorption of methylene blue and reactive black 5 was spontaneous and endothermic. At pH 2, an adsorption capacity of 0.67 mg/g and a removal efficiency of 66.86% were achieved for reactive black 5. For methylene blue at pH 6, the adsorption capacity was 4.34 mg/g, and the decolorization rate was 87%. The decreases in the removal rates of dyestuffs in the binary system indicate that they are affected by their simultaneous presence in the solution. The results proved that modified citrus peel can be useful for dyestuff removal in single or binary systems, although the removal capacity of modified citrus peel is highly dependent on methylene blue and reactive black 5.
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Affiliation(s)
- İsmail Şimşek
- Department of Environmental Engineering, Faculty of Engineering, Aksaray University, 68100, Aksaray, Turkey
| | - Tolga Bahadir
- Department of Environmental Engineering, Faculty of Engineering, Aksaray University, 68100, Aksaray, Turkey
| | - Hakan Çelebi
- Department of Environmental Engineering, Faculty of Engineering, Aksaray University, 68100, Aksaray, Turkey.
| | - Şevket Tulun
- Department of Environmental Engineering, Faculty of Engineering, Aksaray University, 68100, Aksaray, Turkey
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Zhang AA, Ni JB, Martynenko A, Chen C, Fang XM, Ding CJ, Chen J, Zhang JW, Xiao HW. Electrohydrodynamic drying of citrus (Citrus sinensis L.) peel: Comparative evaluation on the physiochemical quality and volatile profiles. Food Chem 2023; 429:136832. [PMID: 37453333 DOI: 10.1016/j.foodchem.2023.136832] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 05/29/2023] [Accepted: 07/05/2023] [Indexed: 07/18/2023]
Abstract
Based on the concept of circular economy, citrus peel was considered a valuable source of bioactive compounds for high-value foods. Electrohydrodynamic (EHD) drying is a novel technology appropriated for the dehydration of heat-sensitive products such as citrus peel. In current work, EHD drying of citrus peel was performed based on alternating current (AC) or direct current (DC) sources at various voltage levels (9, 18, 27, 36, and 45 kV). The effect of EHD on drying characteristics, water retention capacity, enzyme inactivation, phytochemical contents (phenolic compounds and carotenoids), and volatile compounds of citrus peel were evaluated and compared. Results showed that the drying time in the AC electric field was shorter compared to DC electric field at the same applied voltages due to the polarization layer formed by unipolar charges. The applied voltage determined electric field strength as well as the degree of tissue collapse and cell membrane rupture. EHD elucidated the transformation and degradation of phytochemicals including phenolic compounds, carotenoids, and volatile composition in proportion to the applied voltage. The findings indicate that EHD drying with AC improves drying behaviors, inactivates enzymes, and retains the phytochemical properties of citrus peel.
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Affiliation(s)
- An-An Zhang
- College of Engineering, China Agricultural University, P.O. Box 194, 17 Qinghua Donglu, Beijing 100083, China
| | - Jia-Bao Ni
- College of Engineering, China Agricultural University, P.O. Box 194, 17 Qinghua Donglu, Beijing 100083, China
| | - Alex Martynenko
- Department of Engineering, Faculty of Agriculture, Dalhousie University, Truro, Nova Scotia, Canada
| | - Chang Chen
- Department of Food Science, Cornell University, 630 West North Street, Geneva, NY 14456, USA
| | - Xiao-Ming Fang
- Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, 1 Xiangshan Beigou, Beijing 100093, China
| | - Chang-Jiang Ding
- College of Science, Inner Mongolia University of Technology, Hohhot, China
| | - Jun Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Jian-Wei Zhang
- College of Engineering, China Agricultural University, P.O. Box 194, 17 Qinghua Donglu, Beijing 100083, China
| | - Hong-Wei Xiao
- College of Engineering, China Agricultural University, P.O. Box 194, 17 Qinghua Donglu, Beijing 100083, China.
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Fang L, Wen M, Zou Y, Chu C, Wu C, Tong S. Matrix solid-phase dispersion combined with micro-fractionation bioactivity evaluation screening polymethoxylated flavones from Citrus peels. J Sep Sci 2023; 46:e2300570. [PMID: 37759397 DOI: 10.1002/jssc.202300570] [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: 08/05/2023] [Revised: 09/08/2023] [Accepted: 09/17/2023] [Indexed: 09/29/2023]
Abstract
Polymethoxyflavones were a unique class of natural and safe flavonoids containing two or more methoxy groups, which were also the most abundant edible part in Citrus peel. The optimum condition in the process of selective extraction of polymethoxylated flavones from Citrus peel by matrix solid-phase dispersion (MSPD) was as follows: SBA-15 as adsorbent, ethyl acetate as eluent, the mass ratio of adsorbent to sample 1:1, and the mixture of sample and adsorbent was ground for 3 min. Twelve antioxidants were successfully screened by micro-fractionation bioactivity evaluation assay, in which four of them were flavonoid glycosides, seven of them were polymethoxylated flavones, and one was phenylpropanoid. 1-sinapoly-β-D-glucopyranoside (1) was reported for the first time in Citrus peel. And antioxidant capacity of 1-sinapoly-β-D-glucopyranoside, 5, 7, 8, 3', 4', 5'-hexamethoxyflavone (6), hexamethoxyflavone (11), and 5, 6, 7, 4'-tetramethoxyflavone (7) were reported for the first time. Nobiletin (compound 8), 3, 5, 6, 7, 8, 3', 4'-heptamethoxyflavone (9) and tangeretin (10) were isolated and purified by countercurrent chromatography combined with preparative liquid chromatography. Antioxidant activity evaluation indicated that the three isolated polymethoxylated flavones owned similar antioxidant activity. This study indicated that MSPD combined with micro-fractionation bioactive evaluation was efficient in screening bioactive compounds for rapid extraction and effective pinpointing bioactive substances in natural products.
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Affiliation(s)
- Liqun Fang
- College of Pharmaceutical Science, Zhejiang University of Technology, Huzhou, China
| | - Mengyi Wen
- College of Pharmaceutical Science, Zhejiang University of Technology, Huzhou, China
| | - Yanfang Zou
- College of Pharmaceutical Science, Zhejiang University of Technology, Huzhou, China
| | - Chu Chu
- College of Pharmaceutical Science, Zhejiang University of Technology, Huzhou, China
| | - Chunyan Wu
- Taizhou Vocational College of Science and Technology, Taizhou, P.R. China
| | - Shengqiang Tong
- College of Pharmaceutical Science, Zhejiang University of Technology, Huzhou, China
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Deng X, He S, Han Y, Chen Y. Metabolites profiling reveals the dynamic changes of non-volatiles in Pu-erh during Ganpu tea processing. Food Chem X 2023; 19:100774. [PMID: 37780327 PMCID: PMC10534103 DOI: 10.1016/j.fochx.2023.100774] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 06/08/2023] [Accepted: 06/24/2023] [Indexed: 10/03/2023] Open
Abstract
Ganpu is an unique tea product made by Pu-erh tea and citrus peel. In this study, the non-volatiles changes of Pu-erh during Ganpu tea processing were fully analyzed by UPLC-ESI-MS/MS. Total 276 significantly differential metabolites in Pu-erh during Ganpu processing were detected (P < 0.05, VIP > 1), and their change trend were clustered into 8 subclasses by K-means analysis. Metabolites of Pu-erh present at various processes were revealed. 72 differential metabolites (P < 0.05, VIP > 1 and fold change ≥2 or ≤0.5) between any two stages were identified and fixation was the key step with 61 differential metabolites. 39 flavonoids and 2 lignans and coumarins were significantly decreased after fixation, while 5 terpenoids, 3 amino acids, 1 organic acids, 2 nucleotides and derivatives and newly detected jasminoside A (Log2FC = 9.90), picrocrocin (Log2FC = 9.90) and nomilinic acid (Log2FC = 7.56) were significantly increased. The results provided valuable information about the effect of Ganpu processing on dynamic changes of non-volatiles in Pu-erh.
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Affiliation(s)
- Xinyi Deng
- Department of Tea Science, College of Food Science, Southwest University, Chongqing 400715, China
| | - Shiqiang He
- Department of Tea Science, College of Food Science, Southwest University, Chongqing 400715, China
| | - Yuxin Han
- Department of Tea Science, College of Food Science, Southwest University, Chongqing 400715, China
| | - Yingjuan Chen
- Department of Tea Science, College of Food Science, Southwest University, Chongqing 400715, China
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Yu B, Chen Q, Regenstein JM, Ye C, Wang L. The lipid digestion behavior of oil-in-water emulsions stabilized by different particle-sized insoluble dietary fiber from citrus peel. Food Chem X 2023; 19:100831. [PMID: 37780308 PMCID: PMC10534149 DOI: 10.1016/j.fochx.2023.100831] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/26/2023] [Accepted: 08/07/2023] [Indexed: 10/03/2023] Open
Abstract
In this study, oil-in-water emulsions stabilized by insoluble dietary fibre from citrus peel (CIDF) exhibited an obviously delayed lipid digestion property through gastrointestinal tract (GIT) model. Our results suggested that the rate and extent of lipid digestion greatly relied on particle sizes and concentrations of CIDF, and the inhibition effect of lipolysis was markedly enhanced with decreasing particle sizes and increasing CIDF levels. Furthermore, compared with Tween80-stabilized emulsion, the maximum inhibition extent of lipolysis was 38.77% for CIDF400-stabilized one at 0.4 wt% concentration. Effects of CIDFs on lipid digestion was mainly due to the formation of protective layers around oil droplets, further blocking the entry of lipase to the internal lipids, and/or attributed to the increasing viscosity of emulsions caused by CIDFs, finally limiting the transportation of some substances in the simulated small intestine digestion. Our research would provide useful references for the application of CIDF-stabilized emulsions in low-calorie food.
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Affiliation(s)
- Ben Yu
- College of Food Science and Technology, Huazhong Agricultural University, No.1 Shizishan Street, Wuhan, Hubei 430070, China
- Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Shenzhen, Guangdong 518000, China
| | - Qianqian Chen
- Jinxiang Economic Development Zone Food Industrial Park, Shandong 272209, China
| | - Joe M. Regenstein
- Department of Food Science, Cornell University, Ithaca, NY 14853, USA
| | - Changwen Ye
- Zhengzhou Tobacco Research Institute of China National Tobacco Corporation, Zhengzhou 450001, China
| | - Lufeng Wang
- College of Food Science and Technology, Huazhong Agricultural University, No.1 Shizishan Street, Wuhan, Hubei 430070, China
- Hubei Key Laboratory of Fruit & Vegetable Processing & Quality Control, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Shenzhen, Guangdong 518000, China
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Koochi ZH, Jahromi KG, Kavoosi G, Ramezanian A. Fortification of Chlorella vulgaris with citrus peel amino acid for improvement biomass and protein quality. Biotechnol Rep (Amst) 2023; 39:e00806. [PMID: 37415835 PMCID: PMC10319642 DOI: 10.1016/j.btre.2023.e00806] [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: 04/05/2022] [Revised: 02/15/2023] [Accepted: 06/17/2023] [Indexed: 07/08/2023]
Abstract
The amino acid extract (protein hydrolysate) from various citrus peels was employed as an organic nutrition source for the culture of Chlorella to investigate their effects on the biomass and protein quality of the microalgae. The major amino acids in citrus peels included proline, asparagine, aspartate, alanine, serine, and arginine. The most plentiful amino acids in the Chlorella were alanine, glutamic acid, aspartic acid, glycine, serine, threonine, leucine, proline, lysine, and arginine. Adding the citrus peel amino acid extracts to the Chlorella medium enhanced overall microalgal biomass (more than two folds p < 0.05) and protein content (more than 1.25 fold, p < 0.05). Citrus peel amino acids increase essential amino acids and decrease the non-protein amino acid of Chlorella (p > 0.05). The present research shows that citrus peels have good nutritional quality and could be used for the inexpensive cultivation of Chlorella biomass with potential utility for food application.
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Affiliation(s)
- Zhila Heydari Koochi
- Department of Biotechnology, School of Agriculture, Shiraz University, Shiraz, Iran
| | | | - Gholamreza Kavoosi
- Department of Biotechnology, School of Agriculture, Shiraz University, Shiraz, Iran
| | - Asghar Ramezanian
- Department of Horticultural Science, School of Agriculture, Shiraz University, Shiraz, Iran
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Panwar D, Panesar PS, Chopra HK. Evaluation of nutritional profile, phytochemical potential, functional properties and anti-nutritional studies of Citrus limetta peels. J Food Sci Technol 2023; 60:2160-2170. [PMID: 37273556 PMCID: PMC10232380 DOI: 10.1007/s13197-023-05743-x] [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] [Revised: 03/24/2023] [Accepted: 03/30/2023] [Indexed: 06/06/2023]
Abstract
The aim of this work was to determine the proximate, mineral, amino acid composition, antioxidant activity, anti-nutritional factors, total dietary fiber, total phenolic content and technological properties of C. limetta peels. Moreover, analytical techniques including FT-IR and SEM were also conducted to study the morphological and structural properties of C. limetta peels. Considering the proximate, mineral, and amino acid composition, C. limetta peels was found to be a good source of ash (3.06 ± 0.20%), crude fiber (10.13 ± 0.30%), carbohydrate (64.08 ± 0.55%), protein (7.56 ± 0.25%), potassium (125.9671 mg/100 g), calcium (112.5861 mg/100 g), magnesium (16.43 mg/100 g), asparagine (2111.06 nmol/mg), glutamic acid (1331.96 nmol/g), and aspartic acid (1162.19 nmol/mg). Furthermore, they contain an appreciable amount of total dietary fiber (48.73 ± 0.45%), total phenolic content (14.30 ± 0.03 mg GAE/g), and antioxidant activity (52.65 ± 0.10%). Moreover, the antinutritional factors present in C. limetta peels were observed to be within the threshold limit. The results of technological properties of peels suggested that they can be potentially utilized as good emulsifying, gelling, foaming, and bulking agents in food industries. Therefore, C. limetta peels can be successfully re-utilized as natural food additive with numerous nutritive and bioactive properties in food sector, thereby achieving zero waste generation.
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Affiliation(s)
- Divyani Panwar
- Food Biotechnology Research Laboratory, Department of Food Engineering and Technology, Sant Longowal Institute of Engineering and Technology, Longowal, Punjab 148106 India
| | - Parmjit S. Panesar
- Food Biotechnology Research Laboratory, Department of Food Engineering and Technology, Sant Longowal Institute of Engineering and Technology, Longowal, Punjab 148106 India
| | - Harish K. Chopra
- Department of Chemistry, Sant Longowal Institute of Engineering and Technology, Longowal, Punjab 148106 India
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Rajendran K, Ganesan S, Manikandan V, Sivaselvam S, AlSalhi MS, Asemi NN, Angayarkanni J, Rajendiran N, Lo HM. Facile synthesis of carbon/titanium oxide quantum dots from lignocellulose-rich mandarin orange peel extract via microwave irradiation: Synthesis, characterization and bio-imaging application. Int J Biol Macromol 2023; 241:124546. [PMID: 37086766 DOI: 10.1016/j.ijbiomac.2023.124546] [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: 02/10/2023] [Revised: 03/22/2023] [Accepted: 04/17/2023] [Indexed: 04/24/2023]
Abstract
A nanohybrid prepared from the lignocellulosic residue is a feasible approach to synthesize blue light emitting fluorescent doped TiO2 quantum dot nanocomposite (C-TiO2 QDs) by microwave techniques using Mandarin orange (Citrus reticulata) peel powder with titanium isopropoxide precursors. With a greater orange peel colloidal medium, the structure of the TiO2-NPs changed from a mixture of rutile and anatase phases to exclusively the anatase phase. The optical and morphological properties of as-prepared C-TiO2 QDs were characterized by HR-TEM, XRD, FT-IR, UV-visible, PL spectra, DLS, and Zeta potential techniques. The reaction condition was optimized by changing substrate composition, pH, and reaction time. C-TiO2 QDs exhibit outstanding stability at pH 7 and remain sustained for at least 180 days without aggregation. As prepared C-TiO2 QDs have distinct emission and excitation activities with an average particle size of 2.8 nm. Cell viability was performed on normal L929 cells, where it showed excellent biocompatibility (<90 %) even at the concentration of 200 μg/mL after 24 h treatment. Additionally, the synthesized C-TiO2 QDs were used with L929 cells as a fluorescent probe for bio-imaging applications. The results revealed that neither of the cell lines' morphologies had significantly changed, proving the biocompatibility of the synthetic C-TiO2 QDs.
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Affiliation(s)
- Kalimuthu Rajendran
- Department of Polymer Science, University of Madras, Guindy Campus, Tamilnadu, India
| | - Sivarasan Ganesan
- Department of Environmental Engineering and Management, Chaoyang University of Technology, Taichung, Taiwan
| | - Velu Manikandan
- Department of Food Science and Technology, Seoul Women's University, 621 Hwarangno, Nowon-gu, Seoul, South Korea; Department of Conservative Dentistry and Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Tamilnadu, 600 077, India
| | - Subramani Sivaselvam
- Bharathiar Cancer Theranostics Research Centre (BCTRC), Bharathiar University, Coimbatore 641 046, India
| | - Mohamad S AlSalhi
- Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box-2455, Riyadh 11451, Saudi Arabia
| | - Nassar N Asemi
- Department of Physics and Astronomy, College of Science, King Saud University, P.O. Box-2455, Riyadh 11451, Saudi Arabia
| | - Jayaraman Angayarkanni
- Department of Microbial Biotechnology, Bharathiar University, Coimbatore, Tamil Nadu 641046, India
| | - Nagappan Rajendiran
- Department of Polymer Science, University of Madras, Guindy Campus, Tamilnadu, India.
| | - Huang-Mu Lo
- Department of Polymer Science, University of Madras, Guindy Campus, Tamilnadu, India.
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12
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Li J, Wang L, Yang K, Zhang G, Li S, Gong H, Liu M, Dai X. Structure characteristics of low molecular weight pectic polysaccharide and its anti-aging capability by modulating the intestinal homeostasis. Carbohydr Polym 2023; 303:120467. [PMID: 36657846 DOI: 10.1016/j.carbpol.2022.120467] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [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: 06/13/2022] [Revised: 11/28/2022] [Accepted: 12/11/2022] [Indexed: 12/23/2022]
Abstract
Pectic polysaccharide has attracted increasing attention for their potential biological properties and applications in health industries. In this study, a low-molecular-weight pectic polysaccharide, POS4, was obtained from citrus peel. The structure of POS4 was preliminarily analyzed by gel-permeation chromatography, monosaccharide analysis, infrared spectroscopy (IR) and nuclear magnetic resonance spectroscopy (NMR). Results showed that the molecular weight of POS4 was 4.76 kDa and it was a galacturonic acid enriched pectic polysaccharide. The anti-aging activity in vivo showed that POS4 could notably prolong the average lifespan of fruit flies by suppressing the generation of reactive oxygen species (ROS). Further studies demonstrated that POS4 could enhance intestinal homeostasis by modulating gut microbiota in a positive way and regulating autophagy associated genes. Taken together, we proposed that galacturonic acid enriched low molecular weight pectic polysaccharide have great potential in the development of healthy foods such as anti-aging health care products.
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Affiliation(s)
- Junhui Li
- College of Life Sciences, China Jiliang University, Hangzhou, Zhejiang 310018, China; Shandong (Linyi) Institute of Modern Agriculture, Zhejiang University, Linyi, China
| | - Lu Wang
- College of Life Sciences, China Jiliang University, Hangzhou, Zhejiang 310018, China
| | - Kun Yang
- College of Life Sciences, China Jiliang University, Hangzhou, Zhejiang 310018, China
| | - Guocai Zhang
- College of Life Sciences, China Jiliang University, Hangzhou, Zhejiang 310018, China
| | - Shan Li
- Institute of Nutrition and Health, Qingdao University, Qingdao 266003, China
| | - Hongjian Gong
- Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
| | - Mingqi Liu
- College of Life Sciences, China Jiliang University, Hangzhou, Zhejiang 310018, China
| | - Xianjun Dai
- College of Life Sciences, China Jiliang University, Hangzhou, Zhejiang 310018, China.
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13
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Han P, Yu Y, Zhang L, Ruan Z. Citrus peel ameliorates mucus barrier damage in HFD-fed mice. J Nutr Biochem 2023; 112:109206. [PMID: 36370925 DOI: 10.1016/j.jnutbio.2022.109206] [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: 02/24/2022] [Revised: 09/17/2022] [Accepted: 11/03/2022] [Indexed: 11/10/2022]
Abstract
Citrus peel is rich in bioactive components, especially polyphenols, which are considered to have great potential in the prevention of intestinal diseases. The intestinal mucus barrier is the first defense against the invasion of foreign substances. In this study, we aimed to explore the possibility and mechanism of citrus peel in alleviating the mucus barrier damage in high-fat-diet (HFD) mice. We found that citrus peel powder (CPP) supplementation effectively reduced body weight, fat weight, intestinal permeability, hyperlipidemia, and systemic inflammation in HFD-fed mice. In particular, CPP increased the number of goblet cells, the protein expression of Mucin-2 (Muc2), and the thickness of the mucus layer, thereby strengthening the colonic mucus barrier function. Moreover, CPP supplementation also reduced the expression of endoplasmic reticulum stress (ERS) proteins (GRP78 and CHOP) and increased the expression of T-synthase (O-glycosylation rate-limiting enzyme) and its chaperone protein (Cosmc) in the colon of HFD-fed mice, which suggested that CPP could improve the abnormal protein folding and O-glycosylation of Muc2 during processing and modification. In summary, our study indicates that CPP plays an effective role in relieving mucus barrier damage by improving the production and properties of Muc2, providing new perspectives on the development of CPP as a dietary supplement for strengthening the intestinal barrier.
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Affiliation(s)
- Peiheng Han
- State Key Laboratory of Food Science and Technology, Institute of Nutrition and School of Food Science and Technology, Nanchang University, Nanchang, Jiangxi, P R China
| | - Yujuan Yu
- State Key Laboratory of Food Science and Technology, Institute of Nutrition and School of Food Science and Technology, Nanchang University, Nanchang, Jiangxi, P R China
| | - Li Zhang
- State Key Laboratory of Food Science and Technology, Institute of Nutrition and School of Food Science and Technology, Nanchang University, Nanchang, Jiangxi, P R China.
| | - Zheng Ruan
- State Key Laboratory of Food Science and Technology, Institute of Nutrition and School of Food Science and Technology, Nanchang University, Nanchang, Jiangxi, P R China
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14
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Fang L, Lin T, Chen B, You H, Wu C, Chu C, Tong S. High-performance liquid chromatography micro-fraction bioactive evaluation combined with countercurrent chromatographic separation of antioxidants from Citrus peel and their tyrosinase inhibition activities. J Sep Sci 2023; 46:e2200764. [PMID: 36583478 DOI: 10.1002/jssc.202200764] [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: 09/22/2022] [Revised: 11/15/2022] [Accepted: 12/18/2022] [Indexed: 12/31/2022]
Abstract
In the present study, high-performance liquid chromatography micro-fraction bioactive evaluation and high speed countercurrent chromatography were performed on screening, identification and isolation of antioxidants from Citrus peel. Three compounds were screened as antioxidants and tyrosinase inhibitors using 2,2'-azino-bis (3-ethyl-benzothiazoline-6-sulfonic acid) radical cation scavenging assay and tyrosinase activity test, then they were identified as eriocitrin, narirutin and hesperidin. Moreover, the solvent system ethyl acetate-n-butanol-water (6:4:10, v/v/v) was used for separation of ethyl acetate extract of Citrus peel by high speed countercurrent chromatography. In total, 0.45 mg of eriocitrin with 87.10% purity, 2.04 mg of narirutin with 95.19% purity and 1.35 mg of hesperidin with 95.19% purity were obtained from 20 mg of ethyl acetate extract of Citrus peel in a single run and then each component was subjected to 2,2'-azino-bis (3-ethyl-benzothiazoline-6-sulfonic acid) radical cation scavenging assay and tyrosinase inhibition assay. Eriocitrin showed great antioxidant activity (the half-maximum concentration: 3.65 µM) and tyrosinase inhibition activity (the half-maximum concentration: 115.67 µM), while narirutin and hesperidin exhibited moderate activity. Tyrosinase inhibition activity for eriocitrin in vitro was reported for the first time. Furthermore, molecular docking between eriocitrin and mushroom tyrosinase was also studied.
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Affiliation(s)
- Liqun Fang
- College of Pharmaceutical Science, Zhejiang University of Technology, Huzhou, P. R. China
| | - Tingting Lin
- College of Pharmaceutical Science, Zhejiang University of Technology, Huzhou, P. R. China
| | - Ben Chen
- College of Pharmaceutical Science, Zhejiang University of Technology, Huzhou, P. R. China
| | - Haibo You
- College of Pharmaceutical Science, Zhejiang University of Technology, Huzhou, P. R. China
| | - Chunyan Wu
- Taizhou Vocational College of Science and Technology, Taizhou, P. R. China
| | - Chu Chu
- College of Pharmaceutical Science, Zhejiang University of Technology, Huzhou, P. R. China
| | - Shengqiang Tong
- College of Pharmaceutical Science, Zhejiang University of Technology, Huzhou, P. R. China
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Asghar MA, Ahmed F, Kamal M, Khan S, Aghar MA. Effectiveness of citrus fruit peel as a biosorbent for the mitigation of aflatoxins in vitro. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2022; 39:1987-2001. [PMID: 36223515 DOI: 10.1080/19440049.2022.2132300] [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: 12/14/2022]
Abstract
We assessed the effectiveness of novel and cost-effective citrus fruit peel (oranges, agro-waste material) for the removal of four aflatoxins B1, B2, G1, and G2 in vitro. The biosorbent was described using SEM, XRF, XRD, FITR spectroscopy, and point of zero charge. The adsorption performance was optimised in a batch experiment by altering the various parameters, such as biosorbent dose (1-15 mg/mL), the preliminary concentration of AFs (20-200 ng/mL), pH (1-9), the incubation period (10-60 min), and temperature (10-45 °C). Maximum removal (90%) was achieved when using biosorbent at 10 mg, each AF concentration 100 ng/mL, pH 3, and incubation time 45 min at 37 °C. The experimental data were well-described by the Langmuir isotherm model and the monolayer coverage (Qe) was calculated to be 78.5, 77.8, 79.2, and 75.6 ng/mg for aflatoxin B1, B2, G1, and G2, respectively. The thermodynamic and kinetic studies suggested that the adsorption performance was endothermic and obeyed the pseudo-second-order rate model. Studies at different pH also proved that the adsorption of toxins would be strong and sufficient under pH variation, as found in the gastrointestinal tract. Thus the biosorption of AFs by orange peel powder might be an efficient low price detoxification method in humans and animals.
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Affiliation(s)
- Muhammad Asif Asghar
- Food and Feed Safety Laboratory, Food and Marine Resources Research Centre, PCSIR Laboratories Complex, Karachi, Pakistan
| | - Farman Ahmed
- Food and Feed Safety Laboratory, Food and Marine Resources Research Centre, PCSIR Laboratories Complex, Karachi, Pakistan
| | - Mehwish Kamal
- Department of Applied Chemistry, University of Karachi, Karachi, Pakistan
| | - Sadia Khan
- Department of Applied Chemistry, University of Karachi, Karachi, Pakistan
| | - Muhammad Arif Aghar
- Department of Pharmaceutics, Faculty of Pharmacy, Jinnah Sindh Medical University, Karachi, Pakistan
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16
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Gao L, Mei S, Ma H, Chen X. Ultrasound-assisted green synthesis of gold nanoparticles using citrus peel extract and their enhanced anti-inflammatory activity. Ultrason Sonochem 2022; 83:105940. [PMID: 35149377 PMCID: PMC8841883 DOI: 10.1016/j.ultsonch.2022.105940] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [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: 12/02/2021] [Revised: 01/25/2022] [Accepted: 01/28/2022] [Indexed: 05/03/2023]
Abstract
Ultrasound and plant extract are two green approaches that have been used to synthesize gold nanoparticles (AuNPs); however, how the combination of ultrasound and citrus peel extract (CPE) affects the structure characteristics and the bioactivity of AuNPs remains unknown. Here we investigated the effects of ultrasound conditions on the particle size, stability, yield, phenolic encapsulation efficacy, and the anti-inflammatory activity of AuNPs. The results showed that temperature was positively correlated to the particle size and the anti-inflammatory activity of synthesized AuNPs. Increasing the power intensity significantly decreased the particle size, while increased the change of total phenolic content (ΔTPC) in the reaction mixture. The increase of ΔTPC caused the enhanced anti-inflammatory activity of AuNPs. The AuNPs synthesized with or without ultrasound treatment were characterized using UV-Vis, DLS, SEM, TEM, EDS, XRD, and FT-IR. The result verified the formation of negatively charged, spherical, stable, and monodispersed AuNPs. AuNPs synthesized with ultrasound (AuNPs-U) has smaller particle size (13.65 nm vs 16.80 nm), greater yield and anti-inflammatory activity (IC50, 82.91 vs 157.71 μg/mL) than its non-ultrasound counterpart (AuNPs-NU). HPLC analysis showed that hesperidin was the key reductant for the synthesis of AuNPs. AuNPs-U also inhibited the mRNA and protein expression of iNOS and COX-2 in the LPS-induced Raw 264.7 cells. Our research elucidates the relationship between the reaction conditions and the structure characteristics and the anti-inflammatory activity of AuNPs synthesized using CPE with the help of ultrasound, thereafter, provides a feasible and economic way to synthesize AuNPs that can be used to ameliorate inflammation.
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Affiliation(s)
- Ling Gao
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu 212013, PR China.
| | - Suhuan Mei
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu 212013, PR China
| | - Haile Ma
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu 212013, PR China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu 212013, PR China.
| | - Xiumin Chen
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu 212013, PR China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Jingkou District, Zhenjiang, Jiangsu 212013, PR China; International Joint Research Laboratory of Intelligent Agriculture and Agri-products Processing, Jiangsu University, Zhenjiang 212013, PR China.
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17
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Matsuo Y, Akita K, Taguchi H, Fujii S, Yoshie-Stark Y, Araki T. Utilization and evaluation of Citrus natsudaidai peel waste as a source of natural food additives. Food Chem 2021; 373:131464. [PMID: 34741966 DOI: 10.1016/j.foodchem.2021.131464] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 09/30/2021] [Accepted: 10/21/2021] [Indexed: 12/11/2022]
Abstract
This study aims to obtain beneficial ingredients from Citrus natsudaidai (CN) peel waste. The yields of ingredients were 26.2-31.6 mg/g dried material (DM) in pectin, 466-581 mg/g DM in insoluble dietary fiber, 5.56-7.15 g/kg fresh material (FM) in the hexane extracts obtained from CN peels, 23.8-27.0 mg/g DM in naringin, and 8.30-10.2 mg/g DM in neohesperidin. A sensory evaluation and instrumental assays using an Electronic nose and Electronic tongue were performed to evaluate aqueous solutions flavored with 0.02% hexane extracts obtained from CN peels. CN-flavored solutions had a preferred smell over commercial citrus-flavored drinks and were classified into the same group as commercial citrus juices in the Electronic nose assay. In addition, CN-flavored solutions showed sourness, bitterness, and orange-like taste, and the overall acceptance of CN-flavored solutions did not significantly differ from commercial citrus-flavored drinks. CN peel waste can be industrially utilized as a source of natural food additives.
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Chebet JJ, Ehiri JE, McClelland DJ, Taren D, Hakim IA. Effect of d-limonene and its derivatives on breast cancer in human trials: a scoping review and narrative synthesis. BMC Cancer 2021; 21:902. [PMID: 34362338 PMCID: PMC8349000 DOI: 10.1186/s12885-021-08639-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 07/27/2021] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND D-limonene and its derivatives have demonstrated potential chemopreventive and anticancer activity in preclinical and clinical studies. The aim of this scoping review was to assess and critically appraise current literature on the effect of these bioactive citrus peel compounds on breast cancer in human trials and to identify knowledge gaps for exploration in future studies. METHODS This study followed a scoping review framework. Peer-reviewed journal articles were included if they reported the effect of d-limonene or its derivatives on breast cancer in human subjects. Articles were retrieved from academic databases - PubMed, EMBASE, CINAHL, Web of Science, and Cochrane reviews - and iteratively through review of bibliographies of relevant manuscripts. Titles and abstracts were appraised against the aforementioned inclusion criteria in a first round of screening. Through consensus meetings and full article review by authors, a final set of studies were selected. Results were reported according to the PRISMA extension for scoping reviews. RESULTS Our search strategy yielded 367 records. Following screening and adjudication, five articles reporting on phase 1(n = 2), phase 2 (n = 2) and both trial phases (n = 1) were included as the final dataset for this review. Trials evaluating the effect of d-limonene (n = 2) showed it was well tolerated in subjects. One study (n = 43 participants) showed d-limonene concentrated in breast tissue (mean 41.3 μg/g tissue) and reduction in tumor cyclin D1 expression, which is associated with tumor proliferation arrest. This study did not show meaningful change in serum biomarkers associated with breast cancer, except for a statistically significant increase in insulin-like growth factor-1 (IGF-I) levels. While elevation of IGF-I is associated with increased cancer risk, the clinical implication of this study remains uncertain given its short duration. Trials with perillyl alcohol (n = 3) showed low tolerance and no effect on breast cancer. CONCLUSION This review demonstrated a dearth of clinical studies exploring the effect of d-limonene and its derivatives on breast cancer. Limited literature suggests d-limonene is safe and tolerable in human subjects compared to its derivative, perillyl alcohol. Our review demonstrates the need for additional well-powered placebo-controlled trials that assess d-limonene's efficacy on breast cancer compared to other therapies.
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Affiliation(s)
- Joy J Chebet
- Department of Health Promotion Sciences, Mel and Enid Zuckerman College of Public Health, University of Arizona, 1295 N Martin Ave, Tucson, AZ, 85724, USA
| | - John E Ehiri
- Department of Health Promotion Sciences, Mel and Enid Zuckerman College of Public Health, University of Arizona, 1295 N Martin Ave, Tucson, AZ, 85724, USA
| | | | - Douglas Taren
- Department of Health Promotion Sciences, Mel and Enid Zuckerman College of Public Health, University of Arizona, 1295 N Martin Ave, Tucson, AZ, 85724, USA
| | - Iman A Hakim
- Department of Health Promotion Sciences, Mel and Enid Zuckerman College of Public Health, University of Arizona, 1295 N Martin Ave, Tucson, AZ, 85724, USA.
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19
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Luciardi MC, Blázquez MA, Alberto MR, Cartagena E, Arena ME. Lemon Oils Attenuate the Pathogenicity of Pseudomonas aeruginosa by Quorum Sensing Inhibition. Molecules 2021; 26:2863. [PMID: 34066034 DOI: 10.3390/molecules26102863] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/26/2021] [Accepted: 05/07/2021] [Indexed: 11/17/2022] Open
Abstract
The chemical composition of three Citrus limon oils: lemon essential oil (LEO), lemon terpenes (LT) and lemon essence (LE), and their influence in the virulence factors production and motility (swarming and swimming) of two Pseudomonas aeruginosa strains (ATCC 27853 and a multidrug-resistant HT5) were investigated. The main compound, limonene, was also tested in biological assays. Eighty-four compounds, accounting for a relative peak area of 99.23%, 98.58% and 99.64%, were identified by GC/MS. Limonene (59-60%), γ-terpinene (10-11%) and β-pinene (7-15%) were the main compounds. All lemon oils inhibited specific biofilm production and bacterial metabolic activities into biofilm in a dose-dependent manner (20-65%, in the range of 0.1-4 mg mL-1) of both strains. Besides, all samples inhibited about 50% of the elastase activity at 0.1 mg mL-1. Pyocyanin biosynthesis decreases until 64% (0.1-4 mg mL-1) for both strains. Swarming motility of P. aeruginosa ATCC 27853 was completely inhibited by 2 mg mL-1 of lemon oils. Furthermore, a decrease (29-55%, 0.1-4 mg mL-1) in the synthesis of Quorum sensing (QS) signals was observed. The oils showed higher biological activities than limonene. Hence, their ability to control the biofilm of P. aeruginosa and reduce the production of virulence factors regulated by QS makes lemon oils good candidates to be applied as preservatives in the food processing industry.
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Hou Z, Chen S, Ye X. High pressure processing accelarated the release of RG-I pectic polysaccharides from citrus peel. Carbohydr Polym 2021; 263:118005. [PMID: 33858565 DOI: 10.1016/j.carbpol.2021.118005] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [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: 01/14/2021] [Revised: 03/25/2021] [Accepted: 03/25/2021] [Indexed: 11/15/2022]
Abstract
High pressure processing (HPP) has become a promising strategy for extracting bioactive constituents. In this study, the impact of HPP treatment at various pH values (2.0, 8.0, and 12.0) on the macromolecular, structural, antioxidant capacity, rheological characteristics and gel properties of citrus pectic polysaccharide was investigated. The results showed that pressure and pH significantly affected the yield and Rhamnogalacturonan I (RG-I) characterizations. The yields of high pressure extraction at pH 12 (28.13 %-33.95 %) were significantly higher than the yields at pH 2 (14.85 %-16.11 %) and pH 8 (8.75 %-9.65 %). The yield of HPP (500 MPa/10 min) assisted alkali extraction is more than 2 times of that of HPP assisted acid extraction. The RG-I structure ratio of HPP-alkali extraction pectic polysaccharide (74.51 %) was significantly higher than that of traditional pectin (41.83 %). The results showed that HPP assisted alkali is a potential pectic polysaccharide extraction technology.
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Affiliation(s)
- Zhiqiang Hou
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, 310058, China
| | - Shiguo Chen
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, 310058, China; Fuli Institute of Food Science, Zhejiang University, Hangzhou, 310058, China; Ningbo Research Institute, Zhejiang University, Hangzhou, 315100, China.
| | - Xingqian Ye
- College of Biosystems Engineering and Food Science, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, 310058, China; Fuli Institute of Food Science, Zhejiang University, Hangzhou, 310058, China; Ningbo Research Institute, Zhejiang University, Hangzhou, 315100, China
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21
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Singh B, Singh JP, Kaur A, Yadav MP. Insights into the chemical composition and bioactivities of citrus peel essential oils. Food Res Int 2021; 143:110231. [PMID: 33992345 DOI: 10.1016/j.foodres.2021.110231] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [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: 07/25/2020] [Revised: 01/31/2021] [Accepted: 02/13/2021] [Indexed: 12/11/2022]
Abstract
Citrus peel (CP), a by-product of the citrus fruit processing, comprises nearly forty to fifty percent of the fruit portion. Interestingly, the essential oil (EO) is primarily concentrated in the peel portion of the citrus fruit. Extraction of CP essential oil (CPEO) is an effective way of utilizing the citrus fruit processing waste. The CPEO can be more efficiently recovered from CP waste by improving the efficiency of conventional extraction processes. The main components of CPEO include monoterpenes, sesquiterpenes and their oxygenated derivatives. Specifically, limonene is the major oil component identified in the peel of different citrus species. The health promoting biological activities of CPEO are functioning as antioxidant, anti-inflammatory, analgesic, antimicrobial and anticancer agents, thereby can be used as a source of functional components and preservatives for the development of nutritionally safe newer food products. This paper provides an in-depth knowledge about the chemical constituents and bioactivities of EOs extracted from peels of different citrus species.
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Affiliation(s)
- Balwinder Singh
- P.G. Department of Biotechnology, Khalsa College, Amritsar 143002, Punjab, India
| | - Jatinder Pal Singh
- Department of Food Science and Technology, Guru Nanak Dev University, Amritsar 143005, Punjab, India
| | - Amritpal Kaur
- Department of Food Science and Technology, Guru Nanak Dev University, Amritsar 143005, Punjab, India.
| | - Madhav P Yadav
- Eastern Regional Research Center, Agricultural Research Service, United States Department of Agriculture, 600 East Mermaid Lane, Wyndmoor, PA 19038, USA.
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Singh B, Singh JP, Kaur A, Singh N. Phenolic composition, antioxidant potential and health benefits of citrus peel. Food Res Int 2020; 132:109114. [PMID: 32331689 DOI: 10.1016/j.foodres.2020.109114] [Citation(s) in RCA: 196] [Impact Index Per Article: 49.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 01/24/2020] [Accepted: 02/18/2020] [Indexed: 01/18/2023]
Abstract
Citrus peel (CP) forms around 40-50% of the total fruit mass but is generally thought to be a waste. However, it is a substantial source of naturally occurring health enhancing compounds, particularly phenolic compounds and carotenoids. Phenolic compounds in CP mainly comprise phenolic acids (primarily caffeic, p-coumaric, ferulic and sinapic acid), flavanones (generally naringin and hesperidin) and polymethoxylated flavones (notably nobiletin and tangeretin). It has also been noted that CP's contain more amounts of these compounds than corresponding edible parts of the fruits. Phenolic compounds present in CP act as antioxidants (by either donation of protons or electrons) and protect cells against free radical damage as well as help in reducing the risk of many chronic diseases. Owing to the more abundance of polyphenols in CP's, their antioxidant activity is also higher than other edible fruit parts. Therefore, peels from citrus fruits can be used as sources of functional compounds and preservatives for the development of newer food products, that are not only safe but also have health-promoting activities. The present review provides in-depth knowledge about the phenolic composition, antioxidant potential and health benefits of CP.
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Hu W, Ye X, Chantapakul T, Chen S, Zheng J. Manosonication extraction of RG-I pectic polysaccharides from citrus waste: Optimization and kinetics analysis. Carbohydr Polym 2020; 235:115982. [PMID: 32122512 DOI: 10.1016/j.carbpol.2020.115982] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [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: 10/29/2019] [Revised: 02/02/2020] [Accepted: 02/10/2020] [Indexed: 01/06/2023]
Abstract
To better understanding the potential of manosonication to accelerate the extraction of RG-I pectic polysaccharides from citrus wastes, alkaline-mediated manosonication extraction (MSE) was optimized using a Box-Behnken design, and the extraction kinetics model was analyzed. The single-factor method revealed that NaOH significantly impacted on the yield and RG-I characterizations (Rha mol% and (Gal+Ara)/Rha ratio), whereas other factors were focused on influences of yields. In the developed quadratic polynomial model, the maximum extraction yield of 25.51 ± 0.81 % was obtained with sonication at 42 ℃, 40 % amplitude, and 250 kPa for 20 min. The kinetics study demonstrated that MSE facilitated the extractability, dissolution and degradation of pectin, resulting in the highest extractability of 27.83 % compared with ultrasonic extraction (22.86 %) and alkaline extraction at high (24.71 %) and low temperature (20.21 %). Rheology and thermal analyses verified the change in polymerization by MSE and the potential functional applications of the RG-I pectic polysaccharides.
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Affiliation(s)
- Weiwei Hu
- College of Biosystems Engineering and Food Science, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, 310058, China
| | - Xingqian Ye
- College of Biosystems Engineering and Food Science, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, 310058, China.
| | - Thunthacha Chantapakul
- College of Biosystems Engineering and Food Science, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, 310058, China
| | - Shiguo Chen
- College of Biosystems Engineering and Food Science, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, 310058, China
| | - Jiaqi Zheng
- College of Biosystems Engineering and Food Science, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou, 310058, China
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Hou HS, Bonku EM, Zhai R, Zeng R, Hou YL, Yang ZH, Quan C. Extraction of essential oil from Citrus reticulate Blanco peel and its antibacterial activity against Cutibacterium acnes (formerly Propionibacterium acnes). Heliyon 2019; 5:e02947. [PMID: 31872120 PMCID: PMC6909146 DOI: 10.1016/j.heliyon.2019.e02947] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [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: 07/14/2019] [Revised: 11/01/2019] [Accepted: 11/25/2019] [Indexed: 12/20/2022] Open
Abstract
Citrus is one of the largest output fruits in the word. In China, the major orange variety is the Citrus reticulate Blanco (Ponkan). The peels are discarded as waste material, its comprehensive utilization is urgently needed. In this work, hydrodistillation method was developed to extract citrus essential oil (EO) from Blanco peel. With the optimal extraction conditions, the EO yield was more than 3%. By GC-MS analysis, 53 compounds were identified from the citrus EO. Terpenes compounds accounted for 71.2%, especially d-limonene (major composition) accounted for 58.9%. The obtained citrus EO showed remarkable antibacterial activity against Cutibacterium acnes (C. acnes, Formerly P. acnes) and common microorganisms such as S. aureus, B. subtilis, and E. coli. Even compared with the common antibiotics (such as erythromycin, clindamycin, and tetracycline) for acne therapy, its antibacterial activity against C. acnes is more excellent. This work provides a potential therapy material for the treatment of acne.
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Affiliation(s)
- He-Shuai Hou
- School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, 430081, China
| | - Emmanuel Mintah Bonku
- School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, 430081, China
| | - Rong Zhai
- School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, 430081, China
| | - Rong Zeng
- College of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, China
| | - Ya-Li Hou
- School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, 430081, China
| | - Zhong-Hua Yang
- School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, 430081, China.,Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, Wuhan University of Science and Technology, Wuhan, 430081, China
| | - Can Quan
- Division of Chemical Metrology and Analytical Science, National Institute of Metrology, Beijing, 100029, China
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25
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Abstract
BACKGROUND Citrus comprises the largest fruit sector worldwide, and its fruit peels are the dominant 'residue' of the industry. Though not profitable, Citrus peels are industrially used for making some byproducts (cattle feed, molasses, ethanol, fiber) and for the extraction of bioactives (flavonoids, essential oils, d-limonene). Still huge amounts of peels are wasted by Citrus industries, juice and other vending sectors. PURPOSE The biological potentials of these unutilized or 'wasted' Citrus peels are least exploited. Here we tested the anticancer potentials of Citrus medica (2 morphotypes), C. sinensis, C. maxima, C. limon and C. reticulata peels by in vitro assays and in vivo cancer models. METHODS Chemical profiles of Citrus peel oils and peel extracts were analyzed by gas chromatographic techniques (GC-FID, GC-MS) and HPTLC-densitometry, respectively. Anticancer potentials of Citrus peels (Citrus medica 2 morphotypes, C. sinensis, C. maxima, C. limon and C. reticulata) were evaluated by various in vitro assays (MTT assay, morphological observations, fast halo assay, flow cytometric analysis) and in vivo cancer models. RESULTS C. reticulata peels (extracts, essential oils) showed significant activity against DLA cell line in MTT assay. We found C. reticulata peel water extract inducing cell cycle arrest of DLA in G0/G1 phase followed by nuclear condensation, membrane blebbing, formation of apoptotic bodies and DNA damage leading to apoptosis. In in vivo experiments, C. reticulata peel extract pre-treated mice were significantly (50%) protected from DLA compared to post-treated mice (33%), without any conspicuous toxic symptoms. Citrus peels have volatiles (essential oils, limonoids) and non-volatiles (mainly polymethoxy flavones) as their bioactive/anticancer constituents. CONCLUSION Our results encourage the use of Citrus peels, which is wasted in huge amounts, as cancer preventive food additives and as anticancer agents.
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Affiliation(s)
- Ajikumaran Nair S
- Phytochemistry and Phytopharmacology Division, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Pacha-Palode 695 562 Thiruvananthapuram, Kerala, India.
| | - Rajani Kurup Sr
- Phytochemistry and Phytopharmacology Division, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Pacha-Palode 695 562 Thiruvananthapuram, Kerala, India.
| | - Akhila S Nair
- Phytochemistry and Phytopharmacology Division, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Pacha-Palode 695 562 Thiruvananthapuram, Kerala, India.
| | - Sabulal Baby
- Phytochemistry and Phytopharmacology Division, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Pacha-Palode 695 562 Thiruvananthapuram, Kerala, India.
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Nishad J, Koley TK, Varghese E, Kaur C. Synergistic effects of nutmeg and citrus peel extracts in imparting oxidative stability in meat balls. Food Res Int 2018; 106:1026-1036. [PMID: 29579894 DOI: 10.1016/j.foodres.2018.01.075] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [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: 09/16/2017] [Revised: 01/29/2018] [Accepted: 01/31/2018] [Indexed: 11/26/2022]
Abstract
Nutmeg (NM) and citrus peel (CP) extracts are potential sources of phytochemicals high in antioxidant activity. The synergistic effect of the extracts when incorporated as a binary mixture (NM-CP) demonstrated high antioxidant activity, exceeding the expected values indicating possible interactive synergism. This effect prompted us to investigate the potential of NM, CP and NM-CP extracts in imparting oxidative stability to meat balls during frozen storage. NM-CP was evaluated at two concentrations 0.5% (NMCP) and 1.0% (NMCP1). Meat balls with added salt (MS) and control (without any salt and antioxidant) served as control. Binary mixture (NM-CP) at 1% showed a stronger inhibitory effect on lipid oxidation in comparison to the NMCP and individual extracts NM and CP. However, with respect to protein oxidation, both concentrations (NMCP and NMCP1) exhibited higher inhibitory activity than the individual counterparts. Color, flavor and sensory scores further confirmed the efficacy of NM-CP in extending the storage life of frozen meat. Synergistic effect of binary extract NMCP in retarding lipid and protein oxidation in meat balls could be of practical value for meat processors.
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Affiliation(s)
- Jyoti Nishad
- Division of Food Science and Postharvest Technology, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India.
| | | | - Eldho Varghese
- Fishery Resources Assessment Division (FRAD), Central Marine Fisheries Research Institute, Kochi 682018, India
| | - Charanjit Kaur
- Division of Food Science and Postharvest Technology, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India
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27
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Abstract
L-Rhamnose is a high value rare sugar that is used as such or after chemical conversions. It is enriched in several biomass fractions such as the pectic polysaccharides rhamnogalacturonan I and II and in naringin, hesperidin, rutin, quercitrin and ulvan. We engineered the filamentous fungus Aspergillus niger to not consume L-rhamnose, while it is still able to produce the enzymes for the hydrolysis of L-rhamnose rich biomass. As a result we present a strain that can be used for the extraction of L-rhamnose in a consolidated process. In the process the biomass is hydrolysed to the monomeric sugars which are consumed by the fungus leaving the L-rhamnose.
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28
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Molina-Calle M, Priego-Capote F, Luque de Castro MD. Development and application of a quantitative method for determination of flavonoids in orange peel: Influence of sample pretreatment on composition. Talanta 2015; 144:349-55. [PMID: 26452832 DOI: 10.1016/j.talanta.2015.05.054] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [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: 03/23/2015] [Revised: 05/19/2015] [Accepted: 05/23/2015] [Indexed: 11/28/2022]
Abstract
Peel, a part of the citrus rich in compounds with high-added value, constitutes the bulk of the waste generated in citrus juice industries. Flavonoids are a class of these high-added value compounds characterized by their bioactivity. In this research, a method for analysis of flavonoids, based on LC-MS/MS by using a triple quadrupole detector, has been developed and applied to the quantitative analysis of 16 flavonoids in extracts obtained by maceration of citrus peel. The parameters involved in the ionization and fragmentation of the target analytes were optimized to develop a selected reaction monitoring (SRM) method, which reported detection and quantitation limits ranging from 0.005 to 5 ng/mL and from 0.01 to 10 ng/mL, respectively. The raw materials for flavonoids extraction were fresh, oven-dried and lyophilized peel of 8 different orange varieties, and the proposed quantitation method was applied to the analysis of the obtained extracts. Evaluation of the two methods of water removal showed that lyophilization preserves the concentration of the flavonoids, while oven-dried peel presented a decrease of glycosylated flavonoids and an increase of aglycone forms.
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Affiliation(s)
- María Molina-Calle
- Department of Analytical Chemistry, University of Córdoba, Annex Marie Curie Building, Campus of Rabanales, 14071 Córdoba, Spain; Maimónides Institute for Research in Biomedicine of Córdoba (IMIBIC), Reina Sofía University Hospital, University of Córdoba, 14071 Córdoba, Spain; University of Córdoba, Agroalimentary Excellence Campus, ceiA3, Campus of Rabanales, 14071 Córdoba, Spain
| | - Feliciano Priego-Capote
- Department of Analytical Chemistry, University of Córdoba, Annex Marie Curie Building, Campus of Rabanales, 14071 Córdoba, Spain; Maimónides Institute for Research in Biomedicine of Córdoba (IMIBIC), Reina Sofía University Hospital, University of Córdoba, 14071 Córdoba, Spain; University of Córdoba, Agroalimentary Excellence Campus, ceiA3, Campus of Rabanales, 14071 Córdoba, Spain.
| | - María D Luque de Castro
- Department of Analytical Chemistry, University of Córdoba, Annex Marie Curie Building, Campus of Rabanales, 14071 Córdoba, Spain; Maimónides Institute for Research in Biomedicine of Córdoba (IMIBIC), Reina Sofía University Hospital, University of Córdoba, 14071 Córdoba, Spain; University of Córdoba, Agroalimentary Excellence Campus, ceiA3, Campus of Rabanales, 14071 Córdoba, Spain.
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29
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Viji P, Binsi PK, Visnuvinayagam S, Bindu J, Ravishankar CN, Srinivasa Gopal TK. Efficacy of mint (Mentha arvensis) leaf and citrus (Citrus aurantium) peel extracts as natural preservatives for shelf life extension of chill stored Indian mackerel. J Food Sci Technol 2015; 52:6278-89. [PMID: 26396373 DOI: 10.1007/s13197-015-1788-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 02/19/2015] [Accepted: 02/24/2015] [Indexed: 11/28/2022]
Abstract
Efficacy of mint (Mentha arvensis) leaf and citrus (Citrus aurantium) peel extracts in retarding the quality changes in Indian mackerel during chilled storage was investigated. Mint leaf extract showed higher quantity of phenolics and superior in-vitro antioxidant activities than citrus peel extract. Gutted mackerel were given a dip treatment in mint extract (0.5 %, w/v) and citrus extract (1 % w/v), packed in LDPE pouches and stored at 0-2 °C. The biochemical quality indices viz. total volatile base nitrogen (TVB-N), trimethylamine nitrogen (TMA-N), free fattyacids (FFA) were significantly (p < 0.05) lower in mint extract (ME) treated fishes compared to citrus extract (CE) treated and control fishes (C) without any treatment. Plant extract treatment significantly inhibited lipid oxidation in mackerel as indicated by peroxide value (PV) and thiobarbituric acid reactive substances (TBARS). Aerobic plate count (APC) was markedly higher in C group followed by CE group throughout the storage period. As per sensory evaluation, shelf life of Indian mackerel was determined to be 11-13 days for C group, 13-15 days for CE group and 16-17 days for ME group, during storage at 0-2 °C.
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Affiliation(s)
- Pankyamma Viji
- Visakhapatnam Research Centre of Central Institute of Fisheries Technology, Oceanview layout, Pandurangapuram, A.U.PO, Visakhapatnam, 530003 India
| | | | - Sivam Visnuvinayagam
- Mumbai Research Centre of Central Institute of Fisheries Technology, Vashi, NaviMumbai, Maharashtra 400703 India
| | - Jaganath Bindu
- Central Institute of Fisheries Technology, Cochin, Kerala 629503 India
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Kaya M, Sousa AG, Crépeau MJ, Sørensen SO, Ralet MC. Characterization of citrus pectin samples extracted under different conditions: influence of acid type and pH of extraction. Ann Bot 2014; 114:1319-1326. [PMID: 25081519 PMCID: PMC4195561 DOI: 10.1093/aob/mcu150] [Citation(s) in RCA: 113] [Impact Index Per Article: 11.3] [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: 12/02/2013] [Accepted: 06/10/2014] [Indexed: 05/29/2023]
Abstract
BACKGROUND AND AIMS Pectin is a complex macromolecule, the fine structure of which is influenced by many factors. It is used as a gelling, thickening and emulsifying agent in a wide range of applications, from food to pharmaceutical products. Current industrial pectin extraction processes are based on fruit peel, a waste product from the juicing industry, in which thousands of tons of citrus are processed worldwide every year. This study examines how pectin components vary in relation to the plant source (orange, lemon, lime, grapefruit) and considers the influence of extraction conditions on the chemical and macromolecular characteristics of pectin samples. METHODS Citrus peel (orange, lemon, lime and grapefruit) from a commercial supplier was used as raw material. Pectin samples were obtained on a bulk plant scale (kilograms; harsh nitric acid, mild nitric acid and harsh oxalic acid extraction) and on a laboratory scale (grams; mild oxalic acid extraction). Pectin composition (acidic and neutral sugars) and physicochemical properties (molar mass and intrinsic viscosity) were determined. KEY RESULTS Oxalic acid extraction allowed the recovery of pectin samples of high molecular weight. Mild oxalic acid-extracted pectins were rich in long homogalacturonan stretches and contained rhamnogalacturonan I stretches with conserved side chains. Nitric acid-extracted pectins exhibited lower molecular weights and contained rhamnogalacturonan I stretches encompassing few and/or short side chains. Grapefruit pectin was found to have short side chains compared with orange, lime and lemon. Orange and grapefruit pectin samples were both particularly rich in rhamnogalacturonan I backbones. CONCLUSIONS Structural, and hence macromolecular, variations within the different citrus pectin samples were mainly related to their rhamnogalacturonan I contents and integrity, and, to a lesser extent, to the length of their homogalacturonan domains.
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Affiliation(s)
- Merve Kaya
- INRA, UR1268 Biopolymères Interactions Assemblages, 44300 Nantes, France
| | - António G Sousa
- CP Kelco ApS., Ved Banen 16, DK-4623 Lille Skensved, Denmark University of Copenhagen, Faculty of Science, Department of Plant and Environmental Sciences, DK-1871 Frederiksberg, Denmark
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