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Wang D, Tang Z, Chen R, Zhong X, Du X, Li YX, Zhao Z. Physicochemical properties of esterified/crosslinked quinoa starches and their influence on bread quality. J Sci Food Agric 2024; 104:3834-3841. [PMID: 38394374 DOI: 10.1002/jsfa.13265] [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: 11/07/2022] [Revised: 12/14/2023] [Accepted: 12/28/2023] [Indexed: 02/25/2024]
Abstract
BACKGROUND Starch is the main component of quinoa seeds. However, quinoa starch has poor solubility in cold water and poor mechanical resistance and is easily aged, which limit its application. Therefore, modification of its structure to improve its functional properties is necessary. RESULTS This research used acetic anhydride and sodium trimetaphosphate to modify the structure of starch molecules and investigated their influence on bread quality. The results showed that both esterification and crosslinking prevented the aggregation behavior of starch molecules. Moreover, they both decreased the gelatinization enthalpy change and relative crystallinity of the starch. Compared with native starch, modification significantly decreased the gelatinization temperature from 57.01 to 52.01 °C and the esterified starch exhibited the lowest enthalpy change with a 44.2% decrease. Modified starch increased the specific volume and decreased the hardness and chewiness of bread. Modification did not influence the moisture content in bread but impacted the water retention capacity, depending on the degree of modification. Low and medium degrees of modification improved the water retention capacity during storage. By contrast, a high degree of modification (10 g kg-1 crosslinking agent) decreased the water retention capacity. The dually modified quinoa starch (esterified and crosslinked) showed no influence on the textural properties of bread. CONCLUSION This study demonstrated that both esterification and crosslinking significantly improved the functional properties of quinoa starch. Crosslinked or esterified quinoa starches have the potential to improve the textural properties of bakery products. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Donghai Wang
- School of Grain Science and Technology, Jiangsu Provincial Engineering Research Center of Grain Bioprocessing, Jiangsu University of Science and Technology, Zhenjiang, China
- School of Biology and Food Engineering, Hubei Minzu University, Enshi, China
| | - Zhiyi Tang
- School of Grain Science and Technology, Jiangsu Provincial Engineering Research Center of Grain Bioprocessing, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Rui Chen
- School of Grain Science and Technology, Jiangsu Provincial Engineering Research Center of Grain Bioprocessing, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Xu Zhong
- School of Grain Science and Technology, Jiangsu Provincial Engineering Research Center of Grain Bioprocessing, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Xiaoyao Du
- School of Grain Science and Technology, Jiangsu Provincial Engineering Research Center of Grain Bioprocessing, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Yi-Xuan Li
- School of Grain Science and Technology, Jiangsu Provincial Engineering Research Center of Grain Bioprocessing, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Zhengtao Zhao
- School of Grain Science and Technology, Jiangsu Provincial Engineering Research Center of Grain Bioprocessing, Jiangsu University of Science and Technology, Zhenjiang, China
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2
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Bogan BJ, Williams HC, Holden CM, Patel V, Joseph G, Fierro C, Sepulveda H, Taylor WR, Rezvan A, San Martin A. The Role of Fatty Acid Synthase in the Vascular Smooth Muscle Cell to Foam Cell Transition. Cells 2024; 13:658. [PMID: 38667273 DOI: 10.3390/cells13080658] [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: 02/01/2024] [Revised: 03/23/2024] [Accepted: 03/27/2024] [Indexed: 04/28/2024] Open
Abstract
Vascular smooth muscle cells (VSMCs), in their contractile and differentiated state, are fundamental for maintaining vascular function. Upon exposure to cholesterol (CHO), VSMCs undergo dedifferentiation, adopting characteristics of foam cells-lipid-laden, macrophage-like cells pivotal in atherosclerotic plaque formation. CHO uptake by VSMCs leads to two primary pathways: ABCA1-mediated efflux or storage in lipid droplets as cholesterol esters (CEs). CE formation, involving the condensation of free CHO and fatty acids, is catalyzed by sterol O-acyltransferase 1 (SOAT1). The necessary fatty acids are synthesized by the lipogenic enzyme fatty acid synthase (FASN), which we found to be upregulated in atherosclerotic human coronary arteries. This observation led us to hypothesize that FASN-mediated fatty acid biosynthesis is crucial in the transformation of VSMCs into foam cells. Our study reveals that CHO treatment upregulates FASN in human aortic SMCs, concurrent with increased expression of CD68 and upregulation of KLF4, markers associated with the foam cell transition. Crucially, downregulation of FASN inhibits the CHO-induced upregulation of CD68 and KLF4 in VSMCs. Additionally, FASN-deficient VSMCs exhibit hindered lipid accumulation and an impaired transition to the foam cell phenotype following CHO exposure, while the addition of the fatty acid palmitate, the main FASN product, exacerbates this transition. FASN-deficient cells also show decreased SOAT1 expression and elevated ABCA1. Notably, similar effects are observed in KLF4-deficient cells. Our findings demonstrate that FASN plays an essential role in the CHO-induced upregulation of KLF4 and the VSMC to foam cell transition and suggest that targeting FASN could be a novel therapeutic strategy to regulate VSMC phenotypic modulation.
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Affiliation(s)
- Bethany J Bogan
- Department of Medicine, Division of Cardiology, Emory University, Atlanta, GA 30322, USA
| | - Holly C Williams
- Department of Medicine, Division of Cardiology, Emory University, Atlanta, GA 30322, USA
| | - Claire M Holden
- Department of Medicine, Division of Cardiology, Emory University, Atlanta, GA 30322, USA
| | - Vraj Patel
- Department of Medicine, Division of Cardiology, Emory University, Atlanta, GA 30322, USA
| | - Giji Joseph
- Department of Medicine, Division of Cardiology, Emory University, Atlanta, GA 30322, USA
| | - Christopher Fierro
- Institute of Biomedical Sciences, Faculty of Medicine, Universidad Andres Bello, Santiago 8370071, Chile
| | - Hugo Sepulveda
- Institute of Biomedical Sciences, Faculty of Medicine, Universidad Andres Bello, Santiago 8370071, Chile
| | - W Robert Taylor
- Department of Medicine, Division of Cardiology, Emory University, Atlanta, GA 30322, USA
| | - Amir Rezvan
- Department of Medicine, Division of Cardiology, Emory University, Atlanta, GA 30322, USA
| | - Alejandra San Martin
- Department of Medicine, Division of Cardiology, Emory University, Atlanta, GA 30322, USA
- Institute of Biomedical Sciences, Faculty of Medicine, Universidad Andres Bello, Santiago 8370071, Chile
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Liu Y, Zhao C, Liu H, Wang X. 20- esterification of 5-spiro CPT and their anticancer activity in vitro. Nat Prod Res 2024:1-9. [PMID: 38586944 DOI: 10.1080/14786419.2024.2337115] [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: 11/13/2023] [Accepted: 03/21/2024] [Indexed: 04/09/2024]
Abstract
20-ester of 5-spirocycle campthothecin derivatives were successfully constructed and synthesised by Steglich esterification in a moderate yield. These derivatives showed a better solubility. Compared to parent compound, most of these 20-ester-5-spirocycle campthothecin derivatives (besides 3g) showed a better inhibition activity against HepG2 cell line.
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Affiliation(s)
- Yuan Liu
- Department of Medicinal Chemistry, Zunyi Medical University, Zunyi City, China
| | - Changkuo Zhao
- Department of Medicinal Chemistry, Zunyi Medical University, Zunyi City, China
| | - Huimin Liu
- Department of Medicinal Chemistry, Zunyi Medical University, Zunyi City, China
| | - Xianheng Wang
- Department of Medicinal Chemistry, Zunyi Medical University, Zunyi City, China
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Więcławik J, Brzęczek-Szafran A, Barteczko N, Chrobok A. Water-Doped Brønsted Acidic Protic Ionic Liquids for Enhanced Tributyl Citrate Synthesis in a Two-Phase Esterification System. Chem Asian J 2024; 19:e202400006. [PMID: 38433098 DOI: 10.1002/asia.202400006] [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: 01/03/2024] [Revised: 02/24/2024] [Accepted: 02/29/2024] [Indexed: 03/05/2024]
Abstract
Tributyl citrate (TBC) plays a crucial role as a plasticizer, enhancing the flexibility of polymers such as polyvinyl chloride. Its biodegradability and non-toxic nature contribute to eco-friendly appeal, making it a preferred additive in diverse industries, including food packaging, medical devices, toys, and consumer goods. Herein, a method for the synthesis of TBC using inexpensive Brønsted acidic protic ionic liquids (ILs) in a two-phase reaction system is presented. The esterification process is carried out with high yield (>99 %), selectivity (up to 98 %) and short reaction time of 2 h. The catalyst in the form of IL shows excellent performance and stability, desirable for industrial applications.
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Affiliation(s)
- Justyna Więcławik
- Department of Organic Chemical Technology and Petrochemistry, Faculty of Chemistry, Silesian University of Technology, Bolesława Krzywoustego 4, 44-100, Gliwice, Poland
| | - Alina Brzęczek-Szafran
- Department of Organic Chemical Technology and Petrochemistry, Faculty of Chemistry, Silesian University of Technology, Bolesława Krzywoustego 4, 44-100, Gliwice, Poland
| | - Natalia Barteczko
- Department of Organic Chemical Technology and Petrochemistry, Faculty of Chemistry, Silesian University of Technology, Bolesława Krzywoustego 4, 44-100, Gliwice, Poland
| | - Anna Chrobok
- Department of Organic Chemical Technology and Petrochemistry, Faculty of Chemistry, Silesian University of Technology, Bolesława Krzywoustego 4, 44-100, Gliwice, Poland
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Keogh J, Inrirai P, Artioli N, Manyar H. Nanostructured Solid/Liquid Acid Catalysts for Glycerol Esterification: The Key to Convert Liability into Assets. Nanomaterials (Basel) 2024; 14:615. [PMID: 38607149 PMCID: PMC11013476 DOI: 10.3390/nano14070615] [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: 03/07/2024] [Revised: 03/26/2024] [Accepted: 03/28/2024] [Indexed: 04/13/2024]
Abstract
Owing to the growing concerns about the dwindling fossil fuel reserves, increasing energy demand, and climate emergency, it is imperative to develop and deploy sustainable energy technologies to ensure future energy supply and to transition to the net-zero world. In this context, there is great potential in the biorefinery concept for supplying drop in biofuels in the form of biodiesel. Biodiesel as a fuel can certainly bridge the gap where electrification or the use of hydrogen is not feasible, for instance, in heavy vehicles and in the farm and marine transportation sectors. However, the biodiesel industry also generates a large amount of crude glycerol as the by-product. Due to the presence of several impurities, crude glycerol may not be a suitable feedstock for all high-value products derived from glycerol, but it fits well with glycerol esterification for producing glycerol acetins, which have numerous applications. This review critically looks at the processes using nanostructured solid/liquid acid catalysts for glycerol esterification, including the economic viability of the scale-up. The homogeneous catalysts reviewed herein include mineral acids and Brønsted acidic ionic liquids, such as SO3H-functionalized and heteropoly acid based ionic liquids. The heterogeneous catalysts reviewed herein include solid acid catalysts such as metal oxides, ion-exchange resins, zeolites, and supported heteropoly acid-based catalysts. Furthermore, the techno-economic analysis studies have shown the process to be highly profitable, confirming the viability of glycerol esterification as a potential tool for economic value addition to the biorefinery industry.
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Affiliation(s)
- John Keogh
- School of Chemistry and Chemical Engineering, Queen’s University Belfast, David-Keir Building, Stranmillis Road, Belfast BT9 5AG, UK
| | - Patcharaporn Inrirai
- School of Chemistry and Chemical Engineering, Queen’s University Belfast, David-Keir Building, Stranmillis Road, Belfast BT9 5AG, UK
| | - Nancy Artioli
- School of Chemistry and Chemical Engineering, Queen’s University Belfast, David-Keir Building, Stranmillis Road, Belfast BT9 5AG, UK
- Department of Civil, Environmental, Architectural Engineering and Mathematics, University of Brescia, Via Branze, 43, 25123 Brescia, Italy
| | - Haresh Manyar
- School of Chemistry and Chemical Engineering, Queen’s University Belfast, David-Keir Building, Stranmillis Road, Belfast BT9 5AG, UK
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Mounya KS, Chowdary AR. Optimization of ultrasound-assisted pectin recovery from cocoa by-products using response surface methodology. J Sci Food Agric 2024. [PMID: 38551402 DOI: 10.1002/jsfa.13498] [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: 09/25/2023] [Revised: 02/21/2024] [Accepted: 03/13/2024] [Indexed: 04/23/2024]
Abstract
BACKGROUND This study aimed to address the significant challenges associated with agricultural and cocoa waste disposal within the context of global food waste concerns. The magnitude of global food waste is staggering, estimated at 1.6 Gt of primary product equivalents, with 1.3 Gt attributed specifically to the edible parts of food. Focusing on cocoa waste, which constitutes around 80% of total cocoa production, management poses a considerable environmental challenge, with over 60% of this waste either burnt or left to rot in plantations. METHOD Ultrasound-assisted extraction of pectin from cocoa pulp mucilage (CPM), cocoa pod husk (CPH), and cocoa bean shell (CBS) was achieved with a central composite design (CCD) using response surface methodology (RSM). RESULTS Ultrasound-assisted extraction takes into consideration independent factors such as temperature, sonication time, pH, solid-liquid ratio, and ultrasonic power intensity. This study achieved the highest yield, anhydrouronic acid content, and degree of esterification under optimum conditions - sonication time of 20 min, pH of 2.5, solid-solvent ratio of 1:40 g mL-1, and ultrasonic power intensity of 64 W cm-2. The composition and characterization of pectin showed that its anhydrouronic acid content was 68.59 ± 0.2% when extracted from CPH, 50.7 ± 0.5% when extracted from CBS, and 43.97 ± 0.17% when extracted from CPM with citric acid. CONCLUSION This study underscored the potential to reduce the environmental impact of cocoa waste, offering improved pectin extraction and sustainable methods for handling agricultural by-products. It is relevant for individuals interested in waste reduction and resource efficiency within the broader agricultural industry, showcasing the potential for practical and sustainable solutions in cocoa waste management. © 2024 Society of Chemical Industry.
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Affiliation(s)
- K Sumana Mounya
- Department of Microbiology and Food Science and Technology, GITAM School of Science, GITAM (Deemed to be University), Visakhapatnam, Andhra Pradesh, India
| | - Akkina Rajani Chowdary
- Department of Microbiology and Food Science and Technology, GITAM School of Science, GITAM (Deemed to be University), Visakhapatnam, Andhra Pradesh, India
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7
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Tian R, Wang C, Jiang W, Janaswamy S, Yang G, Ji X, Lyu G. Biodegradable, Strong, and Hydrophobic Regenerated Cellulose Films Enriched with Esterified Lignin Nanoparticles. Small 2024:e2309651. [PMID: 38530065 DOI: 10.1002/smll.202309651] [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: 10/24/2023] [Revised: 03/11/2024] [Indexed: 03/27/2024]
Abstract
The scientific community is pursuing significant efforts worldwide to develop environmentally viable film materials from biomass, particularly transparent, high-performance regenerated cellulose (RC) films, to replace traditional plastics. However, the inferior mechanical performance and hydrophilic nature of RC films are generally not suitable for use as a substitute for plastics in practical applications. Herein, lignin homogenization is used to synthesize high-performance composite films. The esterified lignin nanoparticles (ELNPs) with dispersible and binding advantages are prepared through esterification and nanometrization. In the presence of ELNPs, RC films exhibit a higher tensile strength (110.4 MPa), hydrophobic nature (103.6° water contact angle, 36.6% water absorption at 120 min, and 1.127 × 10-12 g cm cm-2 s-1 Pa-1 water vapor permeability), and exciting optical properties (high visible and low ultraviolet transmittance). The films further display antioxidant activity, oxygen barrier ability, and thermostability. The films completely biodegrade at 12 and 30% soil moisture. Overall, this study offers new insights into lignin valorization and regenerated cellulose composite films as novel bioplastic materials.
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Affiliation(s)
- Rui Tian
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, China
| | - Chao Wang
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, China
| | - Weikun Jiang
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, China
| | - Srinivas Janaswamy
- Department of Dairy and Food Science, South Dakota State University, Brookings, SD, 57007, USA
| | - Guihua Yang
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, China
| | - Xingxiang Ji
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, China
| | - Gaojin Lyu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan, Shandong, 250353, China
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Yao XR, Jia MZ, Miao XL, Yu SK, Chen YR, Pan JQ, Zhang J. Photocatalyzed Oxidative Tandem Reaction Mediated by Bipyridinium for Multifunctional Derivatization of Alcohols. ChemSusChem 2024:e202301911. [PMID: 38477175 DOI: 10.1002/cssc.202301911] [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: 12/19/2023] [Revised: 02/05/2024] [Accepted: 03/11/2024] [Indexed: 03/14/2024]
Abstract
The multifunctional derivatization of alcohols has been achieved by the bipyridinium-based conjugated small molecule photocatalysts with redox center and Lewis acid site. Besides exhibiting high activity in the selective generation of aldehydes/ketones, acids from alcohols through solvent modulation, this system renders the first selective synthesis of esters via an attractive cross-coupling pattern, whose reaction route is significantly different from the traditional condensation of alcohols and acids or esterification from hemiacetals. Following the oxidization of alcohol to aldehyde via bipyridinium-mediated electron and energy transfer, the Lewis acid site of bipyridinium then activates the aldehyde and methanol to obtain the acetal, which further reacts with methanol to generate ester. This method not only demonstrates a clear advantage of bipyridinium in diverse catalytic activities, but also paves the way for designing efficient multifunctional small molecule photocatalysts. This metal- and additive-free photocatalytic esterification reaction marks a significant advancement towards a more environmentally friendly, cost-effective and green sustainable approach, attributed to the utilization of renewable substrate alcohol and the abundant, low-cost air as the oxidant. The mildness of this esterification reaction condition provides a more suitable alternative for large-scale industrial production of esters.
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Affiliation(s)
- Xin-Rong Yao
- MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 102488, P. R. China
| | - Meng-Ze Jia
- MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 102488, P. R. China
| | - Xiao-Li Miao
- MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 102488, P. R. China
| | - Shi-Kai Yu
- MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 102488, P. R. China
| | - Yun-Rui Chen
- MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 102488, P. R. China
| | - Jia-Qi Pan
- MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 102488, P. R. China
| | - Jie Zhang
- MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 102488, P. R. China
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Zhu L, Tian Y, Wang T, Huang X, Zhou L, Shengming L, Chen G, Che Z. Semisynthesis, anti-oomycete and anti-fungal activities of ursolic acid ester derivatives. Nat Prod Res 2024; 38:906-915. [PMID: 37115170 DOI: 10.1080/14786419.2023.2207135] [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: 02/21/2023] [Accepted: 04/15/2023] [Indexed: 04/29/2023]
Abstract
Using ursolic acid (UA) as the lead compound, thirteen UA ester derivatives (3 and 7a-l) were synthesized by modifying their C-3 and C-28 positions, respectively, and their structures were well characterized by 1H NMR, 13C NMR, HRMS and melting points. Furthermore, we evaluated the anti-oomycete and anti-fungal activities of these compounds against Phytophthora capsici and Fusarium graminearum in vitro. The results showed that compound 7h exhibited prominent anti-oomycete and anti-fungal activities, and the median effective concentration (EC50) values of 7h against P. capsici and F. graminearum were 70.49 and 113.21 mg/L, respectively. This study suggested that the anti-oomycete and anti-fungal activities of esters synthesized by introducing acyloxy group at C-3 position of UA was more conspicuous than that of esters synthesized by introducing benzyloxy group at C-28 position. This result will pave the way for further modification of UA to develop potential new fungicides.
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Affiliation(s)
- Lina Zhu
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Horticultrue and Plant Protection, Henan University of Science and Technology, Luoyang, China
| | - Yuee Tian
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Horticultrue and Plant Protection, Henan University of Science and Technology, Luoyang, China
| | - Tiewei Wang
- ShanDong New Power Biology Science &Technology Co., Ltd, Jinan, China
| | - Xiaobo Huang
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Horticultrue and Plant Protection, Henan University of Science and Technology, Luoyang, China
| | - Lin Zhou
- College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Liu Shengming
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Horticultrue and Plant Protection, Henan University of Science and Technology, Luoyang, China
| | - Genqiang Chen
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Horticultrue and Plant Protection, Henan University of Science and Technology, Luoyang, China
| | - Zhiping Che
- Laboratory of Pesticidal Design & Synthesis, Department of Plant Protection, College of Horticultrue and Plant Protection, Henan University of Science and Technology, Luoyang, China
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Zammit VA, Park SO. In Vivo Monitoring of Glycerolipid Metabolism in Animal Nutrition Biomodel-Fed Smart-Farm Eggs. Foods 2024; 13:722. [PMID: 38472835 DOI: 10.3390/foods13050722] [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: 01/17/2024] [Revised: 02/20/2024] [Accepted: 02/26/2024] [Indexed: 03/14/2024] Open
Abstract
Although many studies have examined the biochemical metabolic pathways by which an egg (egg yolk) lowers blood lipid levels, data on the molecular biological mechanisms that regulate and induce the partitioning of hepatic glycerolipids are missing. The aim of this study was to investigate in vivo monitoring in four study groups using an animal nutrition biomodel fitted with a jugular-vein cannula after egg yolk intake: CON (control group, oral administration of 1.0 g of saline), T1 (oral administration of 1.0 g of pork belly fat), T2 (oral administration of 1.0 g of smart-farm egg yolk), and T3 (oral administration of T1 and T2 alternately every week). The eggs induced significant and reciprocal changes in incorporating 14C lipids into the total glycerolipids and releasing 14CO2, thereby regulating esterification and accelerating oxidation in vivo. The eggs increased phospholipid secretion from the liver into the blood and decreased triacylglycerol secretion by regulating the multiple cleavage of fatty acyl-CoA moieties' fluxes. In conclusion, the results of the current study reveal the novel fact that eggs can lower blood lipids by lowering triacylglycerol secretion in the biochemical metabolic pathway of hepatic glycerolipid partitioning while simultaneously increasing phospholipid secretion and 14CO2 emission.
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Affiliation(s)
- Victor A Zammit
- Metabolic Biochemistry, Warwick Medical School, University of Warwick, Coventry CV4 7AL, UK
| | - Sang O Park
- Institute of Animal Life Science, Kangwon National University, Chuncheon-si 24341, Gangwon State, Republic of Korea
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Melchiorre M, Cucciolito ME, Esposito R, Silvestro S, Ruffo F. Heterogeneous Brønsted Catalysis in the Solvent-Free and Multigram-Scale Synthesis of Polyalcohol Acrylates: The Case Study of Trimethylolpropane Triacrylate. Molecules 2024; 29:918. [PMID: 38398668 PMCID: PMC10892049 DOI: 10.3390/molecules29040918] [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: 01/11/2024] [Revised: 01/31/2024] [Accepted: 02/16/2024] [Indexed: 02/25/2024] Open
Abstract
This article presents a thorough investigation into the synthesis of trimethylolpropane triacrylate (TMPTA) via the esterification reaction of trimethylolpropane (TMP) with acrylic acid using Amberlite™ 120 IR (H+), Amberlyst® 15, and Dowex™ 50WX8 resins as heterogeneous catalysts. Preliminary comparative tests explored the impact of air flow on water removal during the reaction and different acid-to-alcohol molar ratios (3:1, 6:1, or 9:1 mol:mol). The findings revealed that introducing air significantly enhances TMPTA yield and -OH group conversion, particularly at a 6:1 acid-to-alcohol molar ratio. Based on cost considerations, Amberlite™ 120 IR (H+) was selected as the preferred catalyst for further optimization. This included evaluating the effect of catalyst loading (10%, 5.0%, and 2.5% w/wtot) and assessing the impact of a pre-drying process on resin efficiency. The study concluded that optimal conditions did not necessitate drying, requiring 120 °C, a catalyst loading of 10% w/wtot, a 4 h reaction time, an acid:alcohol ratio of 6:1 mol:mol, the presence of MEHQ (0.1% mol/molAA), and air bubbling at 6 ± 1 Nl/h. Catalyst recycling was effectively implemented with a slight reduction in catalytic activity over consecutive runs. Furthermore, the study explored a scaled-up system with a mechanical stirrer, demonstrating the potential for multi-hundred grams scale-up. Considerations for optimizing the air flow stripping system are also highlighted. In summary, this study provides valuable insights into designing and optimizing the esterification process for TMPTA synthesis, laying the foundation for potential industrial applications.
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Affiliation(s)
- Massimo Melchiorre
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario di Monte S. Angelo, Via Cintia 21, 80126 Napoli, Italy; (M.M.); (M.E.C.); (R.E.); (S.S.)
- ISusChem Srl, Piazza Carità 32, 80134 Napoli, Italy
| | - Maria E. Cucciolito
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario di Monte S. Angelo, Via Cintia 21, 80126 Napoli, Italy; (M.M.); (M.E.C.); (R.E.); (S.S.)
- Consorzio Interuniversitario di Reattività Chimica e Catalisi (CIRCC), Via Celso Ulpiani 27, 70126 Bari, Italy
| | - Roberto Esposito
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario di Monte S. Angelo, Via Cintia 21, 80126 Napoli, Italy; (M.M.); (M.E.C.); (R.E.); (S.S.)
- Consorzio Interuniversitario di Reattività Chimica e Catalisi (CIRCC), Via Celso Ulpiani 27, 70126 Bari, Italy
| | - Simone Silvestro
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario di Monte S. Angelo, Via Cintia 21, 80126 Napoli, Italy; (M.M.); (M.E.C.); (R.E.); (S.S.)
| | - Francesco Ruffo
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario di Monte S. Angelo, Via Cintia 21, 80126 Napoli, Italy; (M.M.); (M.E.C.); (R.E.); (S.S.)
- Consorzio Interuniversitario di Reattività Chimica e Catalisi (CIRCC), Via Celso Ulpiani 27, 70126 Bari, Italy
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12
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Li Y, Guo J, Sun S. Decreasing acid value of fatty acid ethyl ester products using complex enzymes. Front Bioeng Biotechnol 2024; 12:1355009. [PMID: 38390361 PMCID: PMC10882546 DOI: 10.3389/fbioe.2024.1355009] [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: 12/13/2023] [Accepted: 01/22/2024] [Indexed: 02/24/2024] Open
Abstract
Recently, enzymatic method has been used to prepare biodiesel using various oils. But the high acid value of the biodiesel product using enzyme as a catalyst has been one issue. In this work, an attempt to reduce the acid value of fatty acid ethyl ester (FAEE) product to satisfy the specified requirement (AV ≤ 0.5 mgKOH/g), a complex enzyme-catalyzed method was used for the ethanolysis of Semen Abutili seed oil (SASO) (AV = 5.5 ± 0.3 mgKOH/g). The effects of various variables (constituents of complex enzyme, type and addition of water removal agent, time, temperature, enzyme addition load, substrate ratio) on the enzymatic reaction were investigated. The optimal reaction conditions were: 1% addition of liquid lipase Eversa® Transform 2.0% and 0.8% of enzyme dry powder CALB, reaction temperature 35°C, alcohol-oil ratio 9:1 (mol/mol), 0.8 g/g of 4A-MS and reaction time 24 h. Under the optimal reaction conditions, the FAEE yield was 90.8% ± 1.5% and its acid value was decreased from 12.0 ± 0.2 mgKOH/g to 0.39 ± 0.10 mgKOH/g. In further evaluating the feasibility of preparing FAEE from SASO, the FAEE products obtained under the optimal reaction conditions were purified and evaluated with reference to the ASTM D6751 standard for the main physicochemical indexes. The results obtained were in accordance with the requirements except for the oxidative stability.
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Affiliation(s)
- Yuting Li
- Lipid Technology and Engineering, Henan University of Technology, Zhengzhou, China
| | - Jingjing Guo
- Lipid Technology and Engineering, Henan University of Technology, Zhengzhou, China
| | - Shangde Sun
- Lipid Technology and Engineering, Henan University of Technology, Zhengzhou, China
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13
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He WS, Zhao L, Yang H, Rui J, Li J, Chen ZY. Novel Synthesis of Phytosterol Ferulate Using Acidic Ionic Liquids as a Catalyst and Its Hypolipidemic Activity. J Agric Food Chem 2024; 72:2309-2320. [PMID: 38252882 PMCID: PMC10835726 DOI: 10.1021/acs.jafc.3c09148] [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: 12/04/2023] [Revised: 12/27/2023] [Accepted: 01/10/2024] [Indexed: 01/24/2024]
Abstract
Phytosterol ferulate (PF) is quantitively low in rice, corn, wheat, oats, barley, and millet, but it is potentially effective in reducing plasma lipids. In this study, PF was synthesized for the first time using acidic ionic liquids as a catalyst. The product was purified, characterized using Fourier transform infrared, mass spectroscopy, and nuclear magnetic resonance, and ultimately confirmed as the desired PF compound. The conversion of phytosterol surpassed an impressive 99% within just 2 h, with a selectivity for PF exceeding 83%. Plasma lipid-lowering activity of PF was further investigated by using C57BL/6J mice fed a high-fat diet as a model. Supplementation of 0.5% PF into diet resulted in significant reductions in plasma total cholesterol, triacylglycerols, and nonhigh-density lipoprotein cholesterol by 13.7, 16.9, and 46.3%, respectively. This was accompanied by 55.8 and 36.3% reductions in hepatic cholesterol and total lipids, respectively, and a 22.9% increase in fecal cholesterol excretion. Interestingly, PF demonstrated a higher lipid-lowering activity than that of its substrates, a physical mixture of phytosterols and ferulic acid. In conclusion, an efficient synthesis of PF was achieved for the first time, and PF had the great potential to be developed as a lipid-lowering dietary supplement.
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Affiliation(s)
- Wen-Sen He
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
- School of Life Sciences, The Chinese University of Hong Kong, Shatin ,Hong Kong, China
| | - Liying Zhao
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Haonan Yang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Jiaxin Rui
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Jie Li
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Zhen-Yu Chen
- School of Life Sciences, The Chinese University of Hong Kong, Shatin ,Hong Kong, China
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14
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Aryusuk K, Nakornsadet A, Sombutsuwan P, Chumsantea S. Characterization of Palm Fatty Acid Distillate, Diacylglycerol Regioisomers, and Esterification Products Using High-Performance Size Exclusion Chromatography. J Oleo Sci 2024; 73:445-454. [PMID: 38556279 DOI: 10.5650/jos.ess23196] [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] [Indexed: 04/02/2024] Open
Abstract
High-performance size exclusion chromatography (HPSEC) equipped with an evaporative light scattering detector (ELSD) was utilized for characterization of palm fatty acid distillate (PFAD) and its esterified products, with a particular focus on lipid profiles and diacylglycerol (DAG) regioisomers. The separation of triacylglycerol (TAG), DAG, monoacylglycerol (MAG), and free fatty acid (FFA) was achieved through a single 100-Å Phenogel column, coupled with a 2-cm C18 guard, utilizing toluene/acetic acid (100:0.25, v/v) as the mobile phase. This separation was based on size sieving principles and the interactions between the hydroxyl group(s) and the Phenogel matrix. The limit of detection (LOD) and limit of quantification (LOQ) for the esterified PFAD products analyzed by this method fell within the range of 4.8-5.5 μg/mL and 14.7-16.7 μg/mL, respectively. Additionally, the same column, paired with a 2-cm silica guard and a mobile phase comprised of toluene/isooctane/acetic acid (35:65:0.15, v/v/v), was used for the characterization of DAG regioisomers within the esterified PFAD. LODs and LOQs for sn-1,3-DAG and sn- 1,2-DAG were determined to be 39.2 and 118.7 μg/mL, and 32.8 and 99.5 μg/mL, respectively. Investigation of esterified PFAD products prepared using 4% H2SO4 at 120°C. After 2 h, the analysis revealed the highest MAG content at 31.85%, accompanied by 51.54% DAG, 2.35% TAG, and a residual 14.27% FFA. Notably, as the reaction time extended, the MAG content decreased, while both DAG and TAG levels exhibited an increasing trend. Further examination of DAG regioisomers during PFAD esterification, under varying catalyst concentrations (2-10%) and reaction temperatures (80-140°C), demonstrated a significant increase in the percentage of sn-1,3-DAG, inversely correlated with the reduction in FFA from 2% H 2 SO 4 and 80°C onwards. Remarkably, the percentage of sn-1,2-DAG remained relatively stable regardless of changes in catalyst concentrations or temperatures, confirming its susceptibility to isomerization into the thermodynamically more stable sn-1,3-DAG form. This study provides valuable insights into the composition and behavior of esterified PFAD products.
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Affiliation(s)
- Kornkanok Aryusuk
- Division of Biochemical Technology, School of Bioresources and Technology, King Mongkut's University of Technology Thonburi (KMUTT)
- Lipid Technology Research Laboratory, Pilot Plant Development and Training Institute (PDTI), King Mongkut's University of Technology Thonburi (KMUTT)
| | - Akkaradech Nakornsadet
- Lipid Technology Research Laboratory, Pilot Plant Development and Training Institute (PDTI), King Mongkut's University of Technology Thonburi (KMUTT)
| | - Piraporn Sombutsuwan
- Lipid Technology Research Laboratory, Pilot Plant Development and Training Institute (PDTI), King Mongkut's University of Technology Thonburi (KMUTT)
| | - Salisa Chumsantea
- Lipid Technology Research Laboratory, Pilot Plant Development and Training Institute (PDTI), King Mongkut's University of Technology Thonburi (KMUTT)
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15
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Rothammer M, Zollfrank C. Photocrosslinkable Cellulose Derivatives for the Manufacturing of All-Cellulose-Based Architectures. Polymers (Basel) 2023; 16:9. [PMID: 38201673 PMCID: PMC10781059 DOI: 10.3390/polym16010009] [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: 11/08/2023] [Revised: 12/10/2023] [Accepted: 12/14/2023] [Indexed: 01/12/2024] Open
Abstract
Replacing petroleum-based polymers with biopolymers such as polysaccharides is essential for protecting our environment by saving fossil resources. A research field that can benefit from the application of more sustainable and renewable materials is photochemistry. Therefore, cellulose-based photoresists that could be photocrosslinked via UV irradiation (λ = 254 nm and λ = 365 nm) were developed. These biogenic polymers enable the manufacturing of sustainable coatings, even with imprinted microstructures, and cellulose-based bulk materials. Thus, herein, cellulose was functionalized with organic compounds containing carbon double bonds to introduce photocrosslinkable side groups directly onto the cellulose backbone. Therefore, unsaturated anhydrides such as methacrylic acid anhydride and unsaturated and polyunsaturated carboxylic acids such as linoleic acid were utilized. Additionally, these cellulose derivatives were modified with acetate or tosylate groups to generate cellulose-based polymers, which are soluble in organic solvents, making them suitable for multiple processing methods, such as casting, printing and coating. The photocurable resist was basically composed of the UV-crosslinkable biopolymer, an appropriate solvent and, if necessary, a photoinitiator. Moreover, these bio-based photoresists were UV-crosslinkable in the liquid and solid states after the removal of the solvent. Further, the manufactured cellulose-based architectures, even the bulk structures, could be entirely regenerated into pure cellulose devices via a sodium methoxide treatment.
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Affiliation(s)
| | - Cordt Zollfrank
- Chair for Biogenic Polymers, Technical University of Munich, Schulgasse 16, 94315 Straubing, Germany;
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16
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Salvitti C, de Petris G, Troiani A, Managò M, Di Noi A, Ricci A, Pepi F. Sulfuric Acid Catalyzed Esterification of Amino Acids in Thin Film. J Am Soc Mass Spectrom 2023; 34:2748-2754. [PMID: 37904271 DOI: 10.1021/jasms.3c00284] [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: 11/01/2023]
Abstract
The esterification reaction of different amino acids with methanol catalyzed by H2SO4 was first studied in the small volume of thin films generated by ESI microdroplet deposition. The reaction is promoted by the pneumatic spray of the ESI source and reaches its maximum efficiency at a thin film temperature of 70 °C. Selective esterification of the COOH moiety was demonstrated. Microdroplet size and thin film volume and lifetime are critical parameters that influenced the reaction outcome. As expected, l-tyrosine and l-phenylalanine having aromatic side chain substituents were the most reactive amino acids, reaching absolute yields of around 40-50%. The amino acid esterification catalyzed by H2SO4 in a thin film occurs under synthetic conditions in which the same reaction in the bulk is not observed.
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Affiliation(s)
- Chiara Salvitti
- "Sapienza" University of Rome, Department of Chemistry and Drug Technologies P.le Aldo Moro 5, 00185 Rome, Italy
| | - Giulia de Petris
- "Sapienza" University of Rome, Department of Chemistry and Drug Technologies P.le Aldo Moro 5, 00185 Rome, Italy
| | - Anna Troiani
- "Sapienza" University of Rome, Department of Chemistry and Drug Technologies P.le Aldo Moro 5, 00185 Rome, Italy
| | - Marta Managò
- "Sapienza" University of Rome, Department of Chemistry and Drug Technologies P.le Aldo Moro 5, 00185 Rome, Italy
| | - Alessia Di Noi
- "Sapienza" University of Rome, Department of Chemistry and Drug Technologies P.le Aldo Moro 5, 00185 Rome, Italy
| | - Andreina Ricci
- Department of Mathematics and Physics, University of Campania L. Vanvitelli, Viale Lincoln 5, 81100, Caserta, Italy
| | - Federico Pepi
- "Sapienza" University of Rome, Department of Chemistry and Drug Technologies P.le Aldo Moro 5, 00185 Rome, Italy
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17
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Scharf A, Popescu CM, Dernegård H, Oja J, Ormondroyd G, Medved S, Sandberg D, Jones D. Particleboards Bonded by an Imidazole-Based Adhesive System. Materials (Basel) 2023; 16:7201. [PMID: 38005130 PMCID: PMC10673158 DOI: 10.3390/ma16227201] [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: 10/28/2023] [Revised: 11/14/2023] [Accepted: 11/15/2023] [Indexed: 11/26/2023]
Abstract
Particleboards with different combinations of the adhesive material imidazole, citric acid, and sorbitol were produced. Softwood sawdust from a Swedish sawmill was mixed with an aqueous solution of the chemicals and then dried to 0% moisture content prior to pressing. The boards were pressed to a target density of 700 kg m-3 at either 200 °C or 220 °C for 10 min. The hygroscopic and mechanical properties of the boards were clearly better at 220 °C than 200 °C for all used chemical combinations. A combination of imidazole (14.4 wt%) and citric acid (11.3 wt%) led to the best results, where the thickness swelling after 24 h of water immersion was 6.3% and the internal bonding strength was 0.57 MPa. The modulus of rupture and modulus of elasticity were 3.3 MPa and 1.1 GPa, respectively. Cyclic accelerated weathering showed exceptional stability with a thickness change after boiling and drying of only 2.1% compared to the initial dry thickness. This study indicates that the presence of imidazole leads to greatly improved hygroscopic properties and good internal bonding strength when used in particleboards.
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Affiliation(s)
- Alexander Scharf
- Wood Science and Engineering, Luleå University of Technology, Forskargatan 1, SE-93187 Skellefteå, Sweden; (D.S.); (D.J.)
| | - Carmen-Mihaela Popescu
- Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania;
| | | | - Johan Oja
- Norra Timber, Skeppargatan 1, SE-90403 Umeå, Sweden;
| | - Graham Ormondroyd
- Biocomposites Centre, Bangor University, Deiniol Road, Bangor LL57 2UW, UK;
| | - Sergej Medved
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia;
| | - Dick Sandberg
- Wood Science and Engineering, Luleå University of Technology, Forskargatan 1, SE-93187 Skellefteå, Sweden; (D.S.); (D.J.)
| | - Dennis Jones
- Wood Science and Engineering, Luleå University of Technology, Forskargatan 1, SE-93187 Skellefteå, Sweden; (D.S.); (D.J.)
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18
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Kutluk T, Kutluk BG. Lipase catalysis: an environmentally friendly production for polyol esters (biolubricant) from microalgae oil. Environ Technol 2023; 44:4099-4112. [PMID: 35588240 DOI: 10.1080/09593330.2022.2079999] [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] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 05/03/2022] [Indexed: 06/15/2023]
Abstract
ABSTRACTThis study aims to investigate the optimized lipase-catalysed esterification reaction from novel feedstock microalgae (Chlorella protothecoides) oil-free fatty acids (FFAs) for biolubricant (Trimethylolpropane (TMP)-triesters) synthesis. FFAs were obtained from microalgae oil by enzymatic hydrolysis. Response surface methodology (RSM) with the central composite design was performed to investigate the effect of experimental factors (lipase amount, TMP/FFAs molar ratio, reaction temperature) on the FFAs conversion and also investigated to resolve the optimum design points. After the experimental studies, the highest FFAs conversion of 93% with 92% triester and 8% mono, di esters contents were found when the lipase amount was 5.5%. TMP/FFAs molar ratio was 0.33 and the reaction temperature value was 60°C. The model fitted with the experimental values with R2 = 0.97. It was also supported by gas chromatography and FTIR analyses that the product obtained was a lubricant.
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Affiliation(s)
- Togayhan Kutluk
- Department of Chemical Engineering, Kocaeli University, Kocaeli, Turkey
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19
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Sejati PS, Obounou Akong F, Fradet F, Gérardin P. Wood Esterification by Fatty Acids Using Trifluoroacetic Anhydride as an Impelling Agent and Its Application for the Synthesis of a New Bioplastic. Materials (Basel) 2023; 16:6830. [PMID: 37959427 PMCID: PMC10648580 DOI: 10.3390/ma16216830] [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: 09/11/2023] [Revised: 10/12/2023] [Accepted: 10/19/2023] [Indexed: 11/15/2023]
Abstract
Fatty acids (FA) and their derivatives with long alkyl chain structures are good candidates for wood esterification to confer thermoplastic properties to wood. Nevertheless, they do not react easily with hydroxyl groups of wood. In this study, we investigated the reactivity of wood with various fatty acids of different chain lengths using trifluoroacetic anhydride (TFAA) as the impelling agent in various reaction conditions. Generally, the esterification of fatty acids without solvents resulted in higher Weight Percentage Gain (WPG) and ester content than the reaction in the presence of CH2Cl2. The esterification reaction could be performed effectively at room temperature, though an increased reaction temperature provoked degradation of the esterified wood. WPG of 67% was obtained for the C3 and 253% for the C16 alkyl chain analogs, respectively. Nevertheless, the ester content was fairly uniform, with values between 10.60 and 11.81 mmol ester/gram of wood for all chain lengths. A higher quantity of reagent led to higher ester content, which tended to stabilize after a ratio of 1:4 wood and TFAA/FA. The esterification reaction was performed rapidly, with an ester content between 7.65 and 9.94 mmol ester/gram of wood being achieved only after 15 min of reaction. Fourier transform infrared spectroscopy (FTIR) analysis was performed to confirm the drastic chemical changes of wood before and after esterification. Morphological observation by scanning electron microscope (SEM), softening measurement by thermomechanical analysis (TMA), and contact angle measurements demonstrated the possibility of esterified spruce wood being applied as a new bioplastic.
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Affiliation(s)
- Prabu Satria Sejati
- LERMAB, Inrae, Université de Lorraine, 54000 Nancy, France; (P.S.S.); (F.O.A.)
- Research Center for Biomass and Bioproducts, National Research and Innovation Agency (BRIN), Bogor 16911, Indonesia
| | | | - Frédéric Fradet
- PLASTINNOV, IUT de Moselle-Est, Université de Lorraine, 57500 Saint-Avold, France;
| | - Philippe Gérardin
- LERMAB, Inrae, Université de Lorraine, 54000 Nancy, France; (P.S.S.); (F.O.A.)
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20
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Kim J, Ravi S, Kim K, Choi Y, Park HH, Bae YS. Novel Porous Organic Polymer Catalyst with Phosphate and Sulfonic Acid Sites for Facile Esterification of Levulinic Acid. ACS Appl Mater Interfaces 2023; 15:48485-48494. [PMID: 37792023 DOI: 10.1021/acsami.3c08640] [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] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Biomass-derived value-added materials such as levulinic acid (LA) are favorable natural resources for producing ester-based biolubricants owing to their biodegradability, nontoxicity, and excellent metal-adhering properties. However, highly active catalysts must be developed to carry out efficient esterification of LA with aliphatic alcohols, especially long-chain aliphatic alcohols. In this study, we developed a novel porous covalent organic polymer catalyst (BPOP-SO3H) with dual acid sites, phosphate and sulfonic acid sites, for the esterification of LA. The prepared BPOP-SO3H catalyst was verified using various surface analysis techniques. BPOP-SO3H exhibited 98% LA conversion with n-butanol and 99% selectivity for butyl levulinate ester within 30 min, which is superior to that of most reported catalysts. BPOP-SO3H also showed high LA conversion and ester selectivity when other aliphatic alcohols were used. Moreover, BPOP-SO3H showed good recyclability for five consecutive cycles. We believe that incorporating a high density of acid sites into a porous polymer with a large surface area and hierarchical pores is a promising approach for developing heterogeneous acid catalysts for the production of alkyl levulinate esters from LA.
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Affiliation(s)
- Jinwoo Kim
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Seenu Ravi
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Kijun Kim
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Yujin Choi
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Hyung-Ho Park
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Youn-Sang Bae
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
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21
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Fortunato M, Taddeo F, Vitiello R, Turco R, Tesser R, Russo V, Di Serio M. Tailoring Synthetic Pelargonic Acid Esters for Bio-Based Lubricant Applications: Exploring the Relationship between Structure and Properties. ACS Sustain Chem Eng 2023; 11:12406-12413. [PMID: 37621693 PMCID: PMC10445259 DOI: 10.1021/acssuschemeng.3c02882] [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] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 08/01/2023] [Indexed: 08/26/2023]
Abstract
Pelargonic acid (PA) is commercially obtained by oxidative cleavage of fatty acid double bonds. Its esters are interesting compounds used to create bio-based products. An industrially relevant application of these compounds is in the field of solvent manufacturing and formulation of green lubricating oils. The physical-chemical and rheological properties of these esters are influenced by the structural features of the alcohol used as starting materials, such as chain length, number of unsaturation, and degree of branching. This work provides an in-depth study of the existing structure-properties relations for fatty acid alkyl esters obtained from PA and different alcohols [i.e., 2-ethylhexanol (EtHex), ethylene glycol, 1,3-propanediol, 1,4-butanediol, trimethylolpropane, and pentaerythritol]. The aim is to evaluate the use of the synthesized product for the formulation of bio-based lubricants. The chosen alcohols are frequently employed in the preparation of bio-based lubricants. In addition, most of them, such as EtHex and diols, can be derived from biomass sources, contributing to the sustainability of the obtained products. For comparison purposes, some of these alcohols were also used for the synthesis of the corresponding oleic acid esters, which were chosen as a benchmark due to their common use in the synthesis of bio-based lubricants. The influence of the structural factors on the viscosity, pour point (PP), and oxidation stability of the synthesized esters was highlighted by comparing the obtained results. Pelargonates showed lower viscosities and higher PPs than that of the oleates, but they present high stabilities to the oxidation due to the absence of unsaturation.
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Affiliation(s)
| | - Francesco Taddeo
- Department of Chemical Sciences, University of Naples Federico II, via Cintia, Napoli 80126, Italy
| | - Rosa Vitiello
- Department of Chemical Sciences, University of Naples Federico II, via Cintia, Napoli 80126, Italy
| | - Rosa Turco
- Department of Chemical Sciences, University of Naples Federico II, via Cintia, Napoli 80126, Italy
| | - Riccardo Tesser
- Department of Chemical Sciences, University of Naples Federico II, via Cintia, Napoli 80126, Italy
| | - Vincenzo Russo
- Department of Chemical Sciences, University of Naples Federico II, via Cintia, Napoli 80126, Italy
| | - Martino Di Serio
- Department of Chemical Sciences, University of Naples Federico II, via Cintia, Napoli 80126, Italy
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22
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Kaplan M, Ciesielski M, Fuchs S, Getterle C, Schönberger F, Pfaendner R. Novel Macromolecular and Biobased Flame Retardants Based on Cellulose Esters and Phosphorylated Sugar Alcohols. Polymers (Basel) 2023; 15:3195. [PMID: 37571090 PMCID: PMC10420857 DOI: 10.3390/polym15153195] [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: 06/23/2023] [Revised: 07/17/2023] [Accepted: 07/18/2023] [Indexed: 08/13/2023] Open
Abstract
The increasing demand to provide sustainably produced plastic materials requires, a.o., the development of biobased flame retardants (FRs) for applications where flame retardancy is essential. To meet those challenging new sustainability requirements, a set of novel phosphorus-containing cellulose esters were synthesized by an efficient two-step procedure. In the first step, cellulose was treated with acrylic anhydride to synthesize acrylate-functionalized cellulose esters-more specifically, cellulose acrylate butyrate (CeAcBu) and propionate (CeAcPr). Subsequently, phosphorylated anhydro erythritol (PAHE), synthesized from the sugar alcohol erythritol, was added to the acrylate-functionalized cellulose esters via Phospha-Michael addition. For comparison a cellulose ester based on 6H-Dibenzo[c,e][1,2]oxaphosphorin-6-on (DOPO) was prepared analogously. The acrylate-functionalized cellulose esters and novel FRs were characterized by NMR spectroscopy. TGA investigations of PAHE-functionalized CeAcBu revealed an onset temperature of decomposition (2% mass loss) of approx. 290 °C. The novel PAHE-based FR was incorporated into a polypropylene-polyethylene copolymer (PP-co-PE) together with poly-tert-butylphenol disulfide (PBDS) (8 wt.%/2 wt.%) as a synergist. The PP-PE samples achieved V2 classification in the UL 94 V test. In addition, specimens of a rapeseed oil-based polyamide containing PAHE-functionalized CeAcBu at 20 wt.% loading yielded a V2 rating with short burning times.
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Affiliation(s)
- Matay Kaplan
- Fraunhofer Institute for Structural Durability and System Reliability LBF, 64289 Darmstadt, Germany; (M.K.); (F.S.); (R.P.)
| | - Michael Ciesielski
- Fraunhofer Institute for Structural Durability and System Reliability LBF, 64289 Darmstadt, Germany; (M.K.); (F.S.); (R.P.)
| | - Sabine Fuchs
- Hamm-Lippstadt University of Applied Sciences, 59063 Hamm, Germany; (S.F.); (C.G.)
| | - Christoffer Getterle
- Hamm-Lippstadt University of Applied Sciences, 59063 Hamm, Germany; (S.F.); (C.G.)
| | - Frank Schönberger
- Fraunhofer Institute for Structural Durability and System Reliability LBF, 64289 Darmstadt, Germany; (M.K.); (F.S.); (R.P.)
| | - Rudolf Pfaendner
- Fraunhofer Institute for Structural Durability and System Reliability LBF, 64289 Darmstadt, Germany; (M.K.); (F.S.); (R.P.)
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Díaz-Ramos DI, Ortiz-Basurto RI, García-Barradas O, Chacón-López MA, Montalvo-González E, Pascual-Pineda LA, Valenzuela-Vázquez U, Jiménez-Fernández M. Lauroylated, Acetylated, and Succinylated Agave tequilana Fructans Fractions: Structural Characterization, Prebiotic, Antibacterial Activity and Their Effect on Lactobacillus paracasei under Gastrointestinal Conditions. Polymers (Basel) 2023; 15:3115. [PMID: 37514505 PMCID: PMC10383541 DOI: 10.3390/polym15143115] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 07/05/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023] Open
Abstract
The effect of chemical modification of fractions of native agave fructans (NAF), high performance (HPAF), and a high degree of polymerization (HDPAF) by lauroylation, acetylation, and succinylation reactions on their prebiotic activity, antibacterial properties were evaluated and survival of L. paracasei in a simulated gastrointestinal system. The characterization of the reactions was confirmed by NMR and FTIR. The lauroylated and succinylated fructan fractions showed higher antibacterial activity against pathogenic bacteria such as Escherichia coli, Enterococcus faecalis and Staphylococcus aureus than the unmodified ones. Analyses with L. paracasei showed that the acetylated fructan fractions had a greater prebiotic effect, and simulated gastrointestinal tests demonstrated that the acetylated and succinylated fractions favored the survival of L. paracasei during the gastrointestinal phase. The effect of modifying the agave fructans fractions on the evaluated properties depended on the structure, size, and polarity of each incorporated functional group, as well as the degree of polymerization and substitution of each fraction. These results show that the chemical modification of the fructan fractions analyzed improves their functional properties, offering an alternative in the food and pharmaceutical industry.
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Affiliation(s)
- Dafne I Díaz-Ramos
- Laboratorio Integral de Investigación en Alimentos, Tecnológico Nacional de México-Instituto Tecnológico de Tepic, Tepic 63175, Nayarit, Mexico
| | - Rosa I Ortiz-Basurto
- Laboratorio Integral de Investigación en Alimentos, Tecnológico Nacional de México-Instituto Tecnológico de Tepic, Tepic 63175, Nayarit, Mexico
| | - Oscar García-Barradas
- Instituto de Química Aplicada, Universidad Veracruzana, Xalapa 91190, Veracruz, Mexico
| | - Martina A Chacón-López
- Laboratorio Integral de Investigación en Alimentos, Tecnológico Nacional de México-Instituto Tecnológico de Tepic, Tepic 63175, Nayarit, Mexico
| | - Efigenia Montalvo-González
- Laboratorio Integral de Investigación en Alimentos, Tecnológico Nacional de México-Instituto Tecnológico de Tepic, Tepic 63175, Nayarit, Mexico
| | - Luz A Pascual-Pineda
- Centro de Investigación y Desarrollo en Alimentos, Universidad Veracruzana, Xalapa 91190, Veracruz, Mexico
| | | | - Maribel Jiménez-Fernández
- Centro de Investigación y Desarrollo en Alimentos, Universidad Veracruzana, Xalapa 91190, Veracruz, Mexico
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24
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Li D, Wang X, Hou X, Sun S, Chen X, Zhang H. Synthesis of hydrophilic glyceryl monocaffeate with economical catalyst cation-exchange resin Amberlyst-35. J Sci Food Agric 2023; 103:4676-4684. [PMID: 36905092 DOI: 10.1002/jsfa.12547] [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: 07/17/2022] [Revised: 02/03/2023] [Accepted: 03/10/2023] [Indexed: 06/06/2023]
Abstract
BACKGROUND Caffeic acid (CA) has anti-oxidation and anti-inflammatory. However, the poor hydrophilicity of CA limits its biological activities. In this work, hydrophilic glyceryl monocaffeate (GMC) was synthesized by esterification using different caffeoyl donors (deep eutectic solvent and solid CA). Cation-exchange resins were used as the catalysts. The effects of reaction conditions were also investigated. RESULTS The mass transfer limitation of esterification was eliminated using deep eutectic solvent. Compared with the previous catalysts (immobilized lipase Novozym 435), an economic cation-exchange resin, Amberlyst-35 (A-35), showed good catalytic performance for GMC preparation. The activation energies of GMC synthesis and CA conversion were 43.71 kJ mol-1 and 43.07 kJ mol-1 , respectively. The optimal reaction conditions were a temperature reaction of 90 °C, catalyst load of 7%, glycerol/CA molar ratio of 5:1 (mol mol-1 ), and reaction time of 24 h, which resulted in a maximum GMC yield and CA conversion of 69.75 ± 1.03% and 82.23 ± 2.02%, respectively. CONCLUSION The results of the work showed a promising alternative for the synthesis of GMC. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Dami Li
- School of Food Science and Engineering, Henan University of Technology, Zhengzhou, PR China
- Henan Engineering Research Center of Oilseed Deep Processing, Henan University of Technology, Zhengzhou, PR China
| | - Xinying Wang
- School of Food Science and Engineering, Henan University of Technology, Zhengzhou, PR China
- Henan Engineering Research Center of Oilseed Deep Processing, Henan University of Technology, Zhengzhou, PR China
| | - Xuebei Hou
- School of Food Science and Engineering, Henan University of Technology, Zhengzhou, PR China
- Henan Engineering Research Center of Oilseed Deep Processing, Henan University of Technology, Zhengzhou, PR China
| | - Shangde Sun
- School of Food Science and Engineering, Henan University of Technology, Zhengzhou, PR China
- Henan Engineering Research Center of Oilseed Deep Processing, Henan University of Technology, Zhengzhou, PR China
| | - Xiaowei Chen
- School of Food Science and Engineering, Henan University of Technology, Zhengzhou, PR China
- Henan Engineering Research Center of Oilseed Deep Processing, Henan University of Technology, Zhengzhou, PR China
| | - Hao Zhang
- School of Food Science and Engineering, Henan University of Technology, Zhengzhou, PR China
- Henan Engineering Research Center of Oilseed Deep Processing, Henan University of Technology, Zhengzhou, PR China
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25
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Dang-Bao T, Nguyen TMC, Hoang GH, Lam HH, Phan HP, Tran TKA. Thiol-Surface-Engineered Cellulose Nanocrystals in Favor of Copper Ion Uptake. Polymers (Basel) 2023; 15:polym15112562. [PMID: 37299360 DOI: 10.3390/polym15112562] [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: 04/28/2023] [Revised: 05/26/2023] [Accepted: 05/31/2023] [Indexed: 06/12/2023] Open
Abstract
Cellulose, the most abundant natural polymer on earth, has recently gained attention for a large spectrum of applications. At a nanoscale, nanocelluloses (mainly involving cellulose nanocrystals or cellulose nanofibrils) possess many predominant features, such as highly thermal and mechanical stability, renewability, biodegradability and non-toxicity. More importantly, the surface modification of such nanocelluloses can be efficiently obtained based on the native surface hydroxyl groups, acting as metal ions chelators. Taking into account this fact, in the present work, the sequential process involving chemical hydrolysis of cellulose and autocatalytic esterification using thioglycolic acid was performed to obtain thiol-functionalized cellulose nanocrystals. The change in chemical compositions was attributed to thiol-functionalized groups and explored via the degree of substitution using a back titration method, X-ray powder diffraction, Fourier-transform infrared spectroscopy and thermogravimetric analysis. Cellulose nanocrystals were spherical in shape and ca. 50 nm in diameter as observed via transmission electron microscopy. The adsorption behavior of such a nanomaterial toward divalent copper ions from an aqueous solution was also assessed via isotherm and kinetic studies, elucidating a chemisorption mechanism (ion exchange, metal chelation and electrostatic force) and processing its operational parameters. In contrast to an inactive configure of unmodified cellulose, the maximum adsorption capacity of thiol-functionalized cellulose nanocrystals toward divalent copper ions from an aqueous solution was 4.244 mg g-1 at a pH of 5 and at room temperature.
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Affiliation(s)
- Trung Dang-Bao
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc City, Ho Chi Minh City, Vietnam
| | - Thi-My-Chau Nguyen
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc City, Ho Chi Minh City, Vietnam
| | - Gia-Han Hoang
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc City, Ho Chi Minh City, Vietnam
| | - Hoa-Hung Lam
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc City, Ho Chi Minh City, Vietnam
| | - Hong-Phuong Phan
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc City, Ho Chi Minh City, Vietnam
| | - Thi-Kieu-Anh Tran
- Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc City, Ho Chi Minh City, Vietnam
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26
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Dalla Valle C, Sandri F, Zecca M, Rastrelli F, Campestrini S, Centomo P. Synthesis of Ion-Exchange Catalysts by Introduction of Fluorinated Ponytails into Novel Mesoporous Polymers. Materials (Basel) 2023; 16:ma16103808. [PMID: 37241434 DOI: 10.3390/ma16103808] [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: 12/09/2022] [Revised: 04/18/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023]
Abstract
A novel synthetic procedure for the functionalisation of styrenic cross-linked polymers with perfluorinated acyl chains has been reported. The effective significant grafting of the fluorinated moieties is supported by {1H}-13C and {19F}-13C NMR characterisations. This kind of polymer appears promising as catalytic support for a variety of reactions requiring a highly lipophilic catalyst. Indeed, the improved lipophilicity of the materials resulted in enhanced catalytic properties of the corresponding sulfonic materials in the reaction of esterification of a solution in a vegetable oil of stearic acid with methanol.
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Affiliation(s)
- Chiara Dalla Valle
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Francesco Sandri
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Marco Zecca
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Federico Rastrelli
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Sandro Campestrini
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Paolo Centomo
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via Marzolo 1, 35131 Padova, Italy
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27
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Sun C, Liu H, Chen Y, Wei X, Liang S. Highly Efficient Synthesis of Chlorogenic Acid Oleyl Alcohol Ester under Non-Catalytic and Solvent-Free Conditions. Molecules 2023; 28:molecules28093948. [PMID: 37175358 PMCID: PMC10180084 DOI: 10.3390/molecules28093948] [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: 04/09/2023] [Revised: 05/04/2023] [Accepted: 05/04/2023] [Indexed: 05/15/2023] Open
Abstract
As a natural polyphenolic compound, chlorogenic acid (CGA) has attracted increasing attention for its various biological activities, such as antioxidant, liver protection, intestinal barrier protection, and effective treatment of obesity and type II diabetes. However, the poor solubility of CGA in hydrophobic media limits its application in the food, drug and cosmetic industries. In order to obtain new hydrophobic derivatives, a highly efficient synthesis approach of CGA oleyl alcohol ester (CGOA) under non-catalytic and solvent-free conditions was developed in this study. The influences of reaction temperature, reaction time, substrate molar ratio, and stirring rate on the CGA conversion were investigated. The results showed that the optimal conditions were as follows: reaction temperature 200 °C, reaction time 3 h, molar ratio of CGA to oleyl alcohol 1:20, and stirring rate 200 rpm. Under these conditions, the CGA conversion could reach 93.59%. Then, the obtained crude product was purified by solvent extraction and column chromatography, and the purify of CGOA was improved to 98.72%. Finally, the structure of CGOA was identified by FT-IR, HPLC-MS and NMR. This study provides a simple and efficient strategy for the preparation of CGOA with the avoidance of catalysts and solvents.
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Affiliation(s)
- Cong Sun
- Grain, Oil and Food Engineering Technology Research Center of the State Grain and Reserves Administration, Key Laboratory of Henan Province, Henan University of Technology, Lianhua Road 100, Zhengzhou 450001, China
- College of Food Science and Engineering, Henan University of Technology, Lianhua Road 100, Zhengzhou 450001, China
| | - Hui Liu
- College of Food Science and Engineering, Henan University of Technology, Lianhua Road 100, Zhengzhou 450001, China
| | - Yanran Chen
- College of Food Science and Engineering, Henan University of Technology, Lianhua Road 100, Zhengzhou 450001, China
| | - Xianzhi Wei
- College of Food Science and Engineering, Henan University of Technology, Lianhua Road 100, Zhengzhou 450001, China
| | - Shaohua Liang
- Grain, Oil and Food Engineering Technology Research Center of the State Grain and Reserves Administration, Key Laboratory of Henan Province, Henan University of Technology, Lianhua Road 100, Zhengzhou 450001, China
- College of Food Science and Engineering, Henan University of Technology, Lianhua Road 100, Zhengzhou 450001, China
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28
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Prasher P, Sharma M. Dialdehyde starch nanoparticles: an emerging material for anticancer drug delivery. Nanomedicine (Lond) 2023; 18:849-854. [PMID: 37449452 DOI: 10.2217/nnm-2023-0018] [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] [Indexed: 07/18/2023] Open
Affiliation(s)
- Parteek Prasher
- Department of Chemistry, University of Petroleum & Energy Studies, Energy Acres, Dehradun, 248007, India
| | - Mousmee Sharma
- Department of Chemistry, Uttaranchal University, Dehradun, 248007, India
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29
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Zhang Y, Deng W, Wu M, Rahmaninia M, Xu C, Li B. Tailoring Functionality of Nanocellulose: Current Status and Critical Challenges. Nanomaterials (Basel) 2023; 13:nano13091489. [PMID: 37177034 PMCID: PMC10179792 DOI: 10.3390/nano13091489] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 04/20/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023]
Abstract
Nanocellulose (NC) isolated from natural cellulose resources, which mainly includes cellulose nanofibril (CNF) and cellulose nanocrystal (CNC), has garnered increased attention in recent decades due to its outstanding physical and chemical properties. Various chemical modifications have been developed with the aim of surface-modifying NC for highly sophisticated applications. This review comprehensively summarizes the chemical modifications applied to NC so far in order to introduce new functionalities to the material, such as silanization, esterification, oxidation, etherification, grafting, coating, and others. The new functionalities obtained through such surface-modification methods include hydrophobicity, conductivity, antibacterial properties, and absorbability. In addition, the incorporation of NC in some functional materials, such as films, wearable sensors, cellulose nanospheres, aerogel, hydrogels, and nanocomposites, is discussed in relation to the tailoring of the functionality of NC. It should be pointed out that some issues need to be addressed during the preparation of NC and NC-based materials, such as the low reactivity of these raw materials, the difficulties involved in their scale-up, and their high energy and water consumption. Over the past decades, some methods have been developed, such as the use of pretreatment methods, the adaptation of low-cost starting raw materials, and the use of environmentally friendly chemicals, which support the practical application of NC and NC-based materials. Overall, it is believed that as a green, sustainable, and renewable nanomaterial, NC is will be suitable for large-scale applications in the future.
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Affiliation(s)
- Yidong Zhang
- Laboratory of Natural Materials Technology, Åbo Akademi University, Henrikinkatu 2, FI-20500 Turku, Finland
- CAS Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Wangfang Deng
- Laboratory of Natural Materials Technology, Åbo Akademi University, Henrikinkatu 2, FI-20500 Turku, Finland
- CAS Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Meiyan Wu
- CAS Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Mehdi Rahmaninia
- Wood and Paper Science and Technology Department, Faculty of Natural Resources, Tarbiat Modares University, Noor 46417-76489, Iran
| | - Chunlin Xu
- Laboratory of Natural Materials Technology, Åbo Akademi University, Henrikinkatu 2, FI-20500 Turku, Finland
| | - Bin Li
- CAS Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
- Shandong Energy Institute, Qingdao 266101, China
- Qingdao New Energy Shandong Laboratory, Qingdao 266101, China
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30
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Konrade D, Gaidukovs S, Vilaplana F, Sivan P. Pectin from Fruit- and Berry-Juice Production by-Products: Determination of Physicochemical, Antioxidant and Rheological Properties. Foods 2023; 12:foods12081615. [PMID: 37107409 PMCID: PMC10137805 DOI: 10.3390/foods12081615] [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: 03/26/2023] [Accepted: 04/04/2023] [Indexed: 04/29/2023] Open
Abstract
Plums (Prunus domestica); red currants (Ribes rubrum); black currants (Ribes nigrum); gooseberries (Ribes uva-crispa); sour cherries (Prunus cerasus); pumpkins (Cuccurbita spp.) are sources for valuable fruit- and berry-juice and cider production. This process leaves a large number of by-products (BP) in the form of pomace, which accounts for up to 80% of the raw material. This by-product represents a rich source of biologically active compounds, especially in the form of different pectic polysaccharides. The pectin extracted from commercial fruits such as citric fruits and apples has high medicinal properties, can be used as edible films and coatings, and is also useful in texture improvement and gel production in the food industry. However, many under-utilized fruits have received little attention regarding the extraction and characterization of their high/value pectin from their by-products. Moreover, the commercial extraction process involving strong acids and high temperature to obtain high-purity pectin leads to the loss of many bioactive components, and these lost components are often compensated for by the addition of synthetic antioxidants and colorants. The aim of the research is to extract pectin from juice production by-products with hot-water extraction using weak organic (0.1 N) citric acid, thus minimizing the impact on the environment. The yield of pectin (PY = 4.47-17.8% DM), galacturonic acid content (47.22-83.57 g 100-1), ash content (1.42-2.88 g 100 g-1), degree of esterification (DE = 45.16-64.06%), methoxyl content (ME = 4.27-8.13%), the total content of phenolic compounds (TPC = 2.076-4.668 µg mg-1, GAE) and the antiradical scavenging activity of the pectin samples (DPPH method (0.56-37.29%)) were determined. Free and total phenolic acids were quantified by saponification using high-pressure liquid chromatography (HPLC). The pectin contained phenolic acids-benzoic (0.25-0.92 µg mg-1), gallic (0.14-0.57 µg mg-1), coumaric (0.04 µg mg-1), and caffeic (0.03 µg mg-1). The pectin extracts from by-products showed glucose and galactose (3.89-21.72 g 100 g-1) as the main neutral sugar monosaccharides. Pectin analysis was performed using FT-IR, and the rheological properties of the pectin gels were determined. The quality of the obtained pectin from the fruit and berry by-products in terms of their high biological activity and high content of glucuronic acids indicated that the products have the potential to be used as natural ingredients in various food products and in pharmaceutical products.
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Affiliation(s)
- Daiga Konrade
- Institute of Technology of Organic Chemistry, Faculty of Materials Science and Applied Chemistry, Riga Technical University, P. Valdena Str. 3/7, LV-1048 Riga, Latvia
| | - Sergejs Gaidukovs
- Latvia Institute of Polymer Materials, Faculty of Materials Science and Applied Chemistry, Riga Technical University, P. Valdena Str. 3/7, LV-1048 Riga, Latvia
| | - Francisco Vilaplana
- Department of Chemistry, Division of Glycoscience, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
| | - Pramod Sivan
- Department of Chemistry, Division of Glycoscience, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
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31
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Pechinskii SV, Kuregyan AG, Oganesyan ET. Regioselective Synthesis of Quercetin and Myricetin Derivatives. RUSS J GEN CHEM+ 2023; 93:245-252. [PMID: 37016708 PMCID: PMC10062247 DOI: 10.1134/s1070363223020032] [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: 09/25/2022] [Revised: 11/17/2022] [Accepted: 11/24/2022] [Indexed: 04/06/2023]
Abstract
A regioselective method for the synthesis of esters of quercetin and myricetin at the hydroxy group in the position 3 was developed. As acids participating in the esterification reaction, 2-hydroxybenzoic (salicylic), 4-hydroxybenzoic, 2,6-dihydroxybenzoic, 3,4-dihydroxybenzoic (procatechuic), 3,4,5-trihydroxybenzoic (gallic) acids were used. A new series of quercetin and myricetin esters were obtained.
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Affiliation(s)
- S V Pechinskii
- Medical Pharmaceutical Institute, Pyatigorsk Branch of Volgograd Medical State University, 357532 Pyatigorsk, Russia
| | - A G Kuregyan
- Medical Pharmaceutical Institute, Pyatigorsk Branch of Volgograd Medical State University, 357532 Pyatigorsk, Russia
| | - E T Oganesyan
- Medical Pharmaceutical Institute, Pyatigorsk Branch of Volgograd Medical State University, 357532 Pyatigorsk, Russia
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32
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Gładkowski W, Chojnacka A, Włoch A, Pruchnik H, Grudniewska A, Dunal A, Dudek A, Maciejewska G, Rudzińska M. Conjugates of 1,3- and 1,2-Acylglycerols with Stigmasterol - Synthesis, NMR Characterization and Impact on Lipid Bilayers. Chempluschem 2023; 88:e202300161. [PMID: 36997498 DOI: 10.1002/cplu.202300161] [Citation(s) in RCA: 2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 03/30/2023] [Accepted: 03/30/2023] [Indexed: 04/01/2023]
Abstract
The main aim of research was synthesis and spectroscopic characterization of new conjugates in which stigmasterol was linked via carbonate or succinyl linker with 1,3- and 1,2-acylglycerols of palmitic and oleic acid. Acylglycerols containing stigmasterol residue at internal position have been synthesized from 2-benzyloxypropane-1,3-diol or dihydroxyacetone. Their asymmetric counterparts containing stigmasterol residue attached to sn-3 position have been obtained from (S)-solketal. Eight synthesized conjugates were used to create the liposomes as nanocarriers of phytosterols to increase their stability and protect them from degradation during thermal-oxidative treatments. Fluorimetric and ATR-FTIR methods were used to determine the impact of synthesized conjugates on the physicochemical properties of the lipid bilayer. The results indicate that conjugates with palmitic acid are better candidates for use as the potential stigmasterol nanocarriers compared to those with oleic acid because they increase the stiffness of the lipid bilayer and temperature of the main phase transition. The obtained results are the first step in designing of stigmasterol-enriched liposomal carriers with higher thermo-oxidative stability for their potential use in the food industry.
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Affiliation(s)
- Witold Gładkowski
- Wroclaw University of Environmental and Life Sciences: Uniwersytet Przyrodniczy we Wroclawiu, Department of Food Chemistry and Biocatalysis, Norwida 25, 50-375, Wrocław, POLAND
| | - Anna Chojnacka
- Wrocław University of Environmental and Life Sciences: Uniwersytet Przyrodniczy we Wroclawiu, Food Chemistry and Biocatalysis, POLAND
| | - Aleksandra Włoch
- Wroclaw University of Environmental and Life Sciences: Uniwersytet Przyrodniczy we Wroclawiu, Department of Physics and Biophysics, Norwida 25, 50-375, Wrocław, POLAND
| | - Hanna Pruchnik
- Wroclaw University of Environmental and Life Sciences: Uniwersytet Przyrodniczy we Wroclawiu, Department of Physics and Biophysics, Norwida 25, 50-375, Wrocław, POLAND
| | - Aleksandra Grudniewska
- Wrocław University of Environmental and Life Sciences: Uniwersytet Przyrodniczy we Wroclawiu, Department of Food Chemistry and Biocatalysis, Norwida 25, 50-375, Wrocław, POLAND
| | - Anna Dunal
- Wroclaw University of Environmental and Life Sciences: Uniwersytet Przyrodniczy we Wroclawiu, Department of Food Chemistry and Biocatalysis, Norwida 25, 50-375, Wrocław, POLAND
| | - Anita Dudek
- Wroclaw University of Environmental and Life Sciences: Uniwersytet Przyrodniczy we Wroclawiu, Department of Physics and Biophysics, Norwida 25, 50-375, Wrocław, POLAND
| | - Gabriela Maciejewska
- Wroclaw University of Technology: Politechnika Wroclawska, Faculty of Chemistry, Norwida 4/6, 50-375, Wroclaw, POLAND
| | - Magdalena Rudzińska
- Poznan University of Life Sciences: Uniwersytet Przyrodniczy w Poznaniu, Faculty of Food Science and Nutrition, Wojska Polskiego 28, 60-637, Poznań, POLAND
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Ruban SM, Ramadass K, Singh G, Talapaneni SN, Kamalakar G, Gadipelly CR, Mannepalli LK, Sugi Y, Vinu A. Organocatalysis with carbon nitrides. Sci Technol Adv Mater 2023; 24:2188879. [PMID: 37007670 PMCID: PMC10054243 DOI: 10.1080/14686996.2023.2188879] [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] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/02/2023] [Accepted: 03/05/2023] [Indexed: 06/19/2023]
Abstract
Carbon nitrides, a distinguished class of metal-free catalytic materials, have presented a good potential for chemical transformations and are expected to become prominent materials for organocatalysis. This is largely possible due to their low cost, exceptional thermal and chemical stability, non-toxicity, ease of functionalization, porosity development, etc. Especially, the carbon nitrides with increased porosity and nitrogen contents are more versatile than their bulk counterparts for catalysis. These N-rich carbon nitrides are discussed in the earlier parts of the review. Later, the review highlights the role of such carbon nitride materials for the various organic catalytic reactions including Knoevenagel condensation, oxidation, hydrogenation, esterification, transesterification, cycloaddition, and hydrolysis. The recently emerging concepts in carbon nitride-based organocatalysis have been given special attention. In each of the sections, the structure-property relationship of the materials was discussed and related to their catalysis action. Relevant comparisons with other catalytic materials are also discussed to realize their real potential value. The perspective, challenges, and future directions are also discussed. The overall objective of this review is to provide up-to-date information on new developments in carbon nitride-based organic catalysis reactions that could see them rising as prominent catalytic materials in the future.
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Affiliation(s)
- Sujanya Maria Ruban
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, Callaghan, Australia
| | - Kavitha Ramadass
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, Callaghan, Australia
| | - Gurwinder Singh
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, Callaghan, Australia
| | | | - Gunda Kamalakar
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada
| | | | | | - Yoshihiro Sugi
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, Callaghan, Australia
- Faculty of Engineering, Gifu University, Gifu, Japan
| | - Ajayan Vinu
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, Callaghan, Australia
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Ye X, Wu Z, Wang M, Lv Y, Huang X, Liu Y, Lin C. Effectively remove printing ink from plastic surface over quaternary ammonium-modified waste cooking oil. Environ Technol 2023; 44:1071-1082. [PMID: 34839791 DOI: 10.1080/09593330.2021.1994019] [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] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 10/08/2021] [Indexed: 06/13/2023]
Abstract
The printing ink on the plastic surface will greatly reduce the quality of recycled plastic products. In this work, quaternary ammonium-modified waste cooking oil (WCOEQ) was fabricated using waste cooking oil, epichlorohydrin, and trimethylamine aqueous solution as raw materials, through ring-opening esterification and quaternary amination reaction. The synthesis conditions of WCOEQ were optimised, and the structure and properties of WCOEQ were characterised by Fourier transform infrared spectroscopy, zeta potential, and 1H NMR. Furthermore, WCOEQ had excellent emulsifying performance, low kraft point, low critical micelle concentration value, good foaming, and stability, which could effectively reduce the surface tension of water, showing application potential in the field of plastic deinking. Importantly, compared with the waste cooking oil without deinking effect, the WCOEQ had an excellent deinking performance on the ink on the plastic surface, and the deinking efficiency could be improved by increasing the concentration of the deinking agent, the deinking temperature, and prolonging the pre-soaking and stirring time. The results of atomic force microscope, energy-dispersive spectroscopy, optical photos, and Leica microscope showed that the roughness changed significantly and the ink molecules were gradually peeling off. This work highlighted the potential of quaternary ammonium-modified waste cooking oil for excellent removal of printing inks on the plastic surface.
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Affiliation(s)
- Xiaoxia Ye
- Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, Department of Environmental Science and Engineering, Fuzhou University, Minhou, Fujian, People's Republic of China
| | - Zhihao Wu
- Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, Department of Environmental Science and Engineering, Fuzhou University, Minhou, Fujian, People's Republic of China
| | - Min Wang
- Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, Department of Environmental Science and Engineering, Fuzhou University, Minhou, Fujian, People's Republic of China
| | - Yuancai Lv
- Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, Department of Environmental Science and Engineering, Fuzhou University, Minhou, Fujian, People's Republic of China
| | - Xiaodan Huang
- Key Laboratory of Ecological Environment and Information Atlas, Fujian Provincial University, Putian, People's Republic of China
| | - Yifan Liu
- Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, Department of Environmental Science and Engineering, Fuzhou University, Minhou, Fujian, People's Republic of China
| | - Chunxiang Lin
- Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, Department of Environmental Science and Engineering, Fuzhou University, Minhou, Fujian, People's Republic of China
- Key Laboratory of Ecological Environment and Information Atlas, Fujian Provincial University, Putian, People's Republic of China
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Won SJ, Yim JH, Kim HK. Synthesis of Short-Chain Alkyl Butyrate through Esterification Reaction Using Immobilized Rhodococcus Cutinase and Analysis of Substrate Specificity through Molecular Docking. J Microbiol Biotechnol 2023; 33:268-276. [PMID: 36524336 PMCID: PMC9998203 DOI: 10.4014/jmb.2211.11022] [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: 11/09/2022] [Accepted: 11/26/2022] [Indexed: 12/23/2022]
Abstract
Alkyl butyrate with fruity flavor is known as an important additive in the food industry. We synthesized various alkyl butyrates from various fatty alcohol and butyric acid using immobilized Rhodococcus cutinase (Rcut). Esterification reaction was performed in a non-aqueous system including heptane, isooctane, hexane, and cyclohexane. As a result of performing the alkyl butyrate synthesis reaction using alcohols of various chain lengths, it was found that the preference for the alcohol substrate had the following order: C6 > C4 > C8 > C10 > C2. Through molecular docking analysis, it was found that the greater the hydrophobicity of alcohol, the higher the accessibility to the active site of the enzyme. However, since the number of torsions increased as the chain length increased, it became difficult for the hydroxyl oxygen of the alcohol to access the γO of serine at the enzyme active site. These molecular docking results were consistent with substrate preference results of the Rcut enzyme. The Rcut maintained the synthesis efficiency at least for 5 days in isooctane solvent. We synthesized as much as 452 mM butyl butyrate by adding 100 mM substrate daily for 5 days and performing the reaction. These results show that Rcut is an efficient enzyme for producing alkyl butyrate used in the food industry.
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Affiliation(s)
- Seok-Jae Won
- Department of Biotechnology, The Catholic University of Korea, Bucheon 14662, Republic of Korea
| | - Joung Han Yim
- Korea Polar Research Institute, Incheon 406-840, Republic of Korea
| | - Hyung Kwoun Kim
- Department of Biotechnology, The Catholic University of Korea, Bucheon 14662, Republic of Korea
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Keglevich G, Harsági N, Drahos L, Zsuzsa Kiss N. Synthesis of Phosphonates with Identical and Different Alkyl Groups by the Microwave-Assisted Alkylation of Phosphonic Ester-Acid Derivatives. Chempluschem 2023; 88:e202200342. [PMID: 36420946 DOI: 10.1002/cplu.202200342] [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: 10/05/2022] [Revised: 10/28/2022] [Indexed: 11/25/2022]
Abstract
Monoalkyl phosphonic derivatives obtained by the microwave (MW)- and ionic liquid-promoted direct esterification of alkylphosphonic acids were converted to the corresponding dialkyl alkylphosphonates on reaction with alkyl halides in the presence of triethylamine, under solvent-free MW-assisted conditions. Derivatives with different alkoxy groups were also synthesized. A minor "disproportionation" side reaction was identified during the preparation of dialkyl alkylphosphonates with different alkoxy groups. All together 12 alkylphosphonates were prepared by the efficient method developed.
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Affiliation(s)
- György Keglevich
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521, Budapest, Hungary
| | - Nikoletta Harsági
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521, Budapest, Hungary
| | - László Drahos
- MS Proteomics Research Group, Research Centre for Natural Sciences, 1117, Budapest, Hungary
| | - Nóra Zsuzsa Kiss
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521, Budapest, Hungary
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Ye X, Wu Z, Wang M, Lv Y, Huang X, Liu Y, Lin C. Example of removing printing ink from plastic surface using quaternary ammonium-modified waste cooking oil. Environ Technol 2023; 44:762-773. [PMID: 34534049 DOI: 10.1080/09593330.2021.1983026] [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: 07/23/2021] [Accepted: 09/11/2021] [Indexed: 06/13/2023]
Abstract
The printing ink on the plastic surface greatly reduces the quality of recycled plastic products. In this work, quaternary ammonium-modified waste cooking oil (WCOQE) was fabricated, using waste cooking oil, epichlorohydrin and trimethylamine aqueous solution as raw materials, by ring-opening esterification and quaternary amination reaction. The synthesis conditions of WCOQE were optimized, and the structure and properties of WCOQE were characterized by FTIR, zeta potential and 1H NMR. Furthermore, WCOQE had excellent emulsifying performance, low kraft point, low CMC value, good foaming and stability, which could effectively reduce the surface tension of water, showing application potential in the field of plastic deinking. Importantly, compared with the waste cooking oil without deinking effect, the WCOQE had an excellent deinking performance on the ink on plastic surface, and the deinking efficiency could be improved by increasing the concentration of deinking agent, the deinking temperature, and prolonging the pre-soaking and stirring time. The results of AFM, EDS, optical photos and Leica microscope showed that the roughness changed significantly, and the ink molecules were gradually peeling off. This work highlighted the excellent potential of quaternary ammonium-modified waste cooking oil for the removal of printing inks on the plastic surface.
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Affiliation(s)
- Xiaoxia Ye
- Department of Environmental Science and Engineering, Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, Fuzhou University, Minhou, People's Republic of China
| | - Zhihao Wu
- Department of Environmental Science and Engineering, Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, Fuzhou University, Minhou, People's Republic of China
| | - Min Wang
- Department of Environmental Science and Engineering, Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, Fuzhou University, Minhou, People's Republic of China
| | - Yuancai Lv
- Department of Environmental Science and Engineering, Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, Fuzhou University, Minhou, People's Republic of China
| | - Xiaodan Huang
- Key Laboratory of Ecological Environment and Information Atlas, Fujian Provincial University, Putian, People's Republic of China
| | - Yifan Liu
- Department of Environmental Science and Engineering, Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, Fuzhou University, Minhou, People's Republic of China
| | - Chunxiang Lin
- Department of Environmental Science and Engineering, Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, Fuzhou University, Minhou, People's Republic of China
- Key Laboratory of Ecological Environment and Information Atlas, Fujian Provincial University, Putian, People's Republic of China
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Decker NS, Johnson T, Behrens S, Obi N, Kaaks R, Chang-Claude J, Fortner RT. Association of circulating free and total oxysterols in breast cancer patients. Clin Chem Lab Med 2023; 61:285-293. [PMID: 36342239 DOI: 10.1515/cclm-2022-0705] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [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: 04/01/2022] [Accepted: 10/25/2022] [Indexed: 11/09/2022]
Abstract
OBJECTIVES Oxysterols, a family of oxidized cholesterol derivates, are of increasing interest due to their role in cancer development and progression. Some oxysterols are estrogen receptor modulators and thus of particular interest in breast cancer research. In human studies, two forms of circulating oxysterols are commonly evaluated: "free" (unesterified) and "total" (esterified and unesterified). However, associations between free and total oxysterols are not well established. We addressed this knowledge gap in a pilot study by evaluating correlations between the free and the total form of each of the circulating oxysterols (free vs. total), and pairwise associations within the panel of total oxysterols (total vs. total) and the panel of free oxysterols (free vs. free). METHODS Concentrations of oxysterols and other non-cholesterol sterols were quantified in blood samples of 27 breast cancer patients from the MARIE breast cancer patient cohort using liquid chromatography mass spectrometry. We used Spearman rank correlations to assess associations. Overall, 12 oxysterols (including 27-hydroxycholesterol (HC), 25-HC, 24S-HC, 7a-HC, 5a6a-epoxycholesterol) and five sterols (including lanosterol and desmosterol) were analyzed. RESULTS Strong correlations (r≥0.82) were observed for seven circulating free and total oxysterols/sterols. The free and total form of 27-HC (r=0.63), 25-HC (r=0.54), and two more oxysterols were weaker correlated. Correlation patterns in the panel of total oxysterols/sterols and the panel of free oxysterols/sterols were similar. CONCLUSIONS These findings demonstrate that concentrations of most free and total oxysterols/sterols are strongly correlated. We provide further insight into the interrelationships between oxysterols in breast cancer patients.
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Affiliation(s)
- Nina Sophia Decker
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Theron Johnson
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Sabine Behrens
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Nadia Obi
- Institute for Medical Biometry and Epidemiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Rudolf Kaaks
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Jenny Chang-Claude
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
- University Cancer Center Hamburg, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Renée Turzanski Fortner
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Cancer Registry of Norway, Oslo, Norway
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Lobiuc A, Pavăl NE, Mangalagiu II, Gheorghiță R, Teliban GC, Amăriucăi-Mantu D, Stoleru V. Future Antimicrobials: Natural and Functionalized Phenolics. Molecules 2023; 28:molecules28031114. [PMID: 36770780 PMCID: PMC9920704 DOI: 10.3390/molecules28031114] [Citation(s) in RCA: 28] [Impact Index Per Article: 28.0] [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: 12/07/2022] [Revised: 01/13/2023] [Accepted: 01/20/2023] [Indexed: 01/24/2023] Open
Abstract
With incidence of antimicrobial resistance rising globally, there is a continuous need for development of new antimicrobial molecules. Phenolic compounds having a versatile scaffold that allows for a broad range of chemical additions; they also exhibit potent antimicrobial activities which can be enhanced significantly through functionalization. Synthetic routes such as esterification, phosphorylation, hydroxylation or enzymatic conjugation may increase the antimicrobial activity of compounds and reduce minimal concentrations needed. With potent action mechanisms interfering with bacterial cell wall synthesis, DNA replication or enzyme production, phenolics can target multiple sites in bacteria, leading to a much higher sensitivity of cells towards these natural compounds. The current review summarizes some of the most important knowledge on functionalization of natural phenolic compounds and the effects on their antimicrobial activity.
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Affiliation(s)
- Andrei Lobiuc
- Faculty of Medicine and Biological Sciences, “Ştefan cel Mare” University, 720229 Suceava, Romania
| | - Naomi-Eunicia Pavăl
- Faculty of Medicine and Biological Sciences, “Ştefan cel Mare” University, 720229 Suceava, Romania
- Correspondence: (N.-E.P.); (I.I.M.)
| | - Ionel I. Mangalagiu
- Faculty of Chemistry, “Alexandru Ioan Cuza” University, 700506 Iasi, Romania
- Correspondence: (N.-E.P.); (I.I.M.)
| | - Roxana Gheorghiță
- Faculty of Medicine and Biological Sciences, “Ştefan cel Mare” University, 720229 Suceava, Romania
| | - Gabriel-Ciprian Teliban
- Department of Horticulture Technologies, “Ion Ionescu de la Brad” University of Life Sciences, 700490 Iasi, Romania
| | | | - Vasile Stoleru
- Department of Horticulture Technologies, “Ion Ionescu de la Brad” University of Life Sciences, 700490 Iasi, Romania
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Shi H, Lu Z, Xu H, Wang S, Nian B, Hu Y. Selective and Efficient Synthesis of Pine Sterol Esters Catalyzed by Deep Eutectic Solvent. Molecules 2023; 28. [PMID: 36770660 DOI: 10.3390/molecules28030993] [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: 12/19/2022] [Revised: 01/11/2023] [Accepted: 01/16/2023] [Indexed: 01/21/2023] Open
Abstract
Phytosterol esters have attracted widespread academic and industrial interests due to their advantages in lowering cholesterol, as antioxidants, and in preventing or treating cancer. However, the generation of by-products limits the application of phytosterol esters in food fields. In this study, deep eutectic solvents (DESs), a series of green, nontoxic, low-cost and biodegradable solvents, were adopted as the catalyst for the synthesis of pine sterol esters. The results showed that the acidic DES which was prepared with choline chloride (ChCl) and p-toluene sulfonic acid monohydrate (PTSA) with a molar ratio of 1:3 performed best in the prescreening experiments. To further improve the efficiency of the pine sterol ester, the molar ratio of substrates, the amount of catalyst, the reaction temperature and the reaction time were optimized, and its yield was improved to 94.1%. Moreover, the by-products of the dehydration side reactions of the sterol can be efficiently inhibited. To make this strategy more universal, other fatty acids were also used as the substrate for the synthesis of pine sterol esters, and a yield of above 92.0% was obtained. In addition, the reusability of DES was also investigated in this study, and the efficiency of DES was well maintained within five recycled uses. Finally, DFT calculations suggested that the suitable H-bonds between ChCl and PTSA decreased the nucleophilic capacity and increased the steric hindrance of the latter, and further prevented the attack on βH and reduced the generation of by-products. This study developed a reliable and eco-friendly strategy for the preparation of high-quality phytosterol esters with low-dosage catalyst usage and high selectivity.
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Zhang M, Jia H, Wang B, Ma C, He F, Fan Q, Liu W. A Prospective Review on the Research Progress of Citric Acid Modified Starch. Foods 2023; 12. [PMID: 36765987 DOI: 10.3390/foods12030458] [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: 12/16/2022] [Revised: 01/10/2023] [Accepted: 01/12/2023] [Indexed: 01/21/2023] Open
Abstract
Citric acid (CA) treatment is a convenient, mild and environmentally friendly strategy to modify the composition, structure and function of starch through hydrolysis and esterification, which expands the application of starch in industry. In this paper, the effects of CA modification on amylose content, amylopectin chain length distribution, microscopic morphology, solubility and swelling ability, thermodynamic properties, gelatinization properties, digestibility properties, texture properties and the film-forming properties of starch were summarized. The application status and development trend of CA modified starch were reviewed, which has important implications for the targeted utilization of CA modified starch in the future.
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Sekine Y, Sakai M, Matsukata M. Esterification of Acetic Acid by Flow-Type Membrane Reactor with AEI Zeolite Membrane. Membranes (Basel) 2023; 13:111. [PMID: 36676918 PMCID: PMC9864284 DOI: 10.3390/membranes13010111] [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: 11/30/2022] [Revised: 01/05/2023] [Accepted: 01/13/2023] [Indexed: 06/17/2023]
Abstract
AEI-type zeolite membrane for dehydration was prepared, and a flow-type membrane reactor for the esterification of acetic acid and ethanol by AEI membrane was developed. A synthesized AEI membrane had suitable molecular sieving property for gas separation (H2/i-butane and CO2/CH4) and pervaporation (H2O/acetic acid). AEI membrane showed H2O permeance of 6.2 × 10-7 mol m-2 s-1 Pa-1 with a separation factor of 67 at 363 K for the equimolar mixture of H2O/acetic acid. AEI membrane maintained stable performance under acidic conditions. The yield of ethyl acetate at 363 K in a flow-type membrane reactor with AEI membrane successfully exceeded the equilibrium of 69.1%, reaching 89.0%. The flow rate of feed solution strongly affected the conversion of acetic acid and the space-time yield (STY) of ethyl acetate. Due to the more significant proportion of water selectively removed from the reaction system at a lower feed flow rate, the thermodynamic equilibrium shifted significantly, resulting in higher conversions. In contrast, STY increased with increasing feed flow rate. Our flow-type membrane reactor exhibited a relatively large STY of 430 kg m-3 h-1 compared with the batch-type membrane reactor previously reported.
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Affiliation(s)
- Yuma Sekine
- Department of Applied Chemistry, Waseda University, 513 Wasedatsurumaki-cho, Shinjuku-ku, Tokyo 162-0041, Japan
| | - Motomu Sakai
- Research Organization for Nano & Life Innovation, Waseda University, 513 Wasedatsurumaki-cho, Shinjuku-ku, Tokyo 162-0041, Japan
| | - Masahiko Matsukata
- Department of Applied Chemistry, Waseda University, 513 Wasedatsurumaki-cho, Shinjuku-ku, Tokyo 162-0041, Japan
- Research Organization for Nano & Life Innovation, Waseda University, 513 Wasedatsurumaki-cho, Shinjuku-ku, Tokyo 162-0041, Japan
- Advanced Research Institute for Science and Engineering, Waseda University, 513 Wasedatsurumaki-cho, Shinjuku-ku, Tokyo 162-0041, Japan
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Yoshizawa A, Maruyama C, Kusuma SBW, Wada N, Kuroda K, Hirose D, Takahashi K. Aryloxy Ionic Liquid-Catalyzed Homogenous Esterification of Cellulose with Low-Reactive Acyl Donors. Polymers (Basel) 2023; 15. [PMID: 36679299 DOI: 10.3390/polym15020419] [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: 12/20/2022] [Revised: 01/06/2023] [Accepted: 01/10/2023] [Indexed: 01/15/2023] Open
Abstract
Ionic liquids (ILs) are recyclable, non-volatile, and can dissolve cellulose, a natural polymer that is insoluble in versatile solvents. Therefore, ILs have been used to modify cellulose. However, 1-ethyl-3-methylimidazolium acetate (EmimOAc), a commercially available IL often used to dissolve and modify cellulose to prepare cellulose-based materials, causes the undesired introduction of an acetyl group derived from the acetate anion of EmimOAc onto the hydroxy group of cellulose during esterification. In this study, for cellulose esterification, we prepared aryloxy ILs as non-carboxylate-type and basic ILs, which can theoretically prevent the undesired introduction of an acyl group from the IL onto the hydroxy group of cellulose. The optimized 1-ethyl-3-methylimidazolium 2-pyridinolate (Emim2OPy) and mixed solvent system achieved rapid cellulose esterification (within 30 min) with an excellent degree of substitution (DS) value (up to >2.9) derived from the employed low-reactive vinyl esters and bio-based unsaturated aldehydes, without any undesired substituent introduction from side reactions.
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Zhang Y, Li W, Wang J, Jin J, Zhang Y, Cheng J, Zhang Q. Advancement in utilization of magnetic catalysts for production of sustainable biofuels. Front Chem 2023; 10:1106426. [PMID: 36704618 PMCID: PMC9871569 DOI: 10.3389/fchem.2022.1106426] [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: 11/23/2022] [Accepted: 12/06/2022] [Indexed: 01/12/2023] Open
Abstract
In this study, we summarize recent advances in the synthesis of magnetic catalysts utilized for biodiesel production, particularly focusing on the physicochemical properties, activity, and reusability of magnetic mixed metal oxides, supported magnetic catalysts, ionic acid-functionalized magnetic catalysts, heteropolyacid-based magnetic catalysts, and metal-organic framework-based magnetic catalysts. The prevailing reaction conditions in the production of biodiesel are also discussed. Lastly, the current limitations and challenges for future research needs in the magnetic catalyst field are presented.
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Affiliation(s)
- Yutao Zhang
- Engineering Technology Center of Control and Remediation of Soil Contamination of Guizhou Science and Technology Department, Anshun University, Anshun, Guizhou, China,School of Chemistry and Chemical Engineering, Anshun University, Anshun, Guizhou, China,College Rural Revitalization Research Center of Guizhou, Anshun University, Anshun, Guizhou, China,*Correspondence: Yutao Zhang, ; Qiuyun Zhang,
| | - Weihua Li
- Engineering Technology Center of Control and Remediation of Soil Contamination of Guizhou Science and Technology Department, Anshun University, Anshun, Guizhou, China
| | - Jialu Wang
- College Rural Revitalization Research Center of Guizhou, Anshun University, Anshun, Guizhou, China
| | - Jiaxing Jin
- School of Chemistry and Chemical Engineering, Anshun University, Anshun, Guizhou, China
| | - Yixi Zhang
- Engineering Technology Center of Control and Remediation of Soil Contamination of Guizhou Science and Technology Department, Anshun University, Anshun, Guizhou, China
| | - Jingsong Cheng
- School of Chemistry and Chemical Engineering, Anshun University, Anshun, Guizhou, China
| | - Qiuyun Zhang
- Engineering Technology Center of Control and Remediation of Soil Contamination of Guizhou Science and Technology Department, Anshun University, Anshun, Guizhou, China,School of Chemistry and Chemical Engineering, Anshun University, Anshun, Guizhou, China,College Rural Revitalization Research Center of Guizhou, Anshun University, Anshun, Guizhou, China,*Correspondence: Yutao Zhang, ; Qiuyun Zhang,
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Li YF, Tian ZX, Shi B, He YB, Long MX. Synthesis and structural characterization of β -cyclodextrin butenate. Des Monomers Polym 2023; 26:132-139. [PMID: 37125223 PMCID: PMC10142337 DOI: 10.1080/15685551.2023.2205741] [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] [Indexed: 05/02/2023] Open
Abstract
β-cyclodextrin butenate was synthesized by using N, N'-Carbonyldiimidazole (CDI) activating reagent and 4-Dimethylaminopyridine (DMAP) as catalyst. The best preparation condition of β-CD butenate was described as below: reaction temperature was 25°C, concentration of 2-butenoic acid was 450 mmol/L, concentration of DMAP was 12.5 mmol/L and reaction time was 20 minutes and at this condition the yield of β-CD butenate was 0.83 mmol/g. According to the results of FT-IR spectrum, NMR spectroscopy and HPLC-QTof-mass spectrum of β-CD butenate, there were four types β-CD butenate synthesized, which were β-CD-2-butenoic acid monoester, β-CD-2-butenoic acid diester, β-CD-2-butenoic acid triester and β-CD-2-butenoic acid tetraester, respectively.
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Affiliation(s)
- Yong-Fu Li
- Integrated Rural Development Center, Guizhou Academy of Agricultural Science, Guiyang, Guizhou, China
- CONTACT Yong-Fu Li Integrated Rural Development Center, Guizhou Academy of Agricultural Science, Guiyang, Guizhou, China
| | - Zhu-Xi Tian
- Integrated Rural Development Center, Guizhou Academy of Agricultural Science, Guiyang, Guizhou, China
| | - Bin Shi
- Integrated Rural Development Center, Guizhou Academy of Agricultural Science, Guiyang, Guizhou, China
| | - Yang-Bo He
- Integrated Rural Development Center, Guizhou Academy of Agricultural Science, Guiyang, Guizhou, China
| | - Ming-Xiu Long
- Integrated Rural Development Center, Guizhou Academy of Agricultural Science, Guiyang, Guizhou, China
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Machado NB, Sabi GJ, Hirata DB, Mendes AA. Enzymatic production of wax esters by esterification using lipase immobilized via physical adsorption on functionalized rice husk silica as biocatalyst. Biotechnol Appl Biochem 2022. [PMID: 36576317 DOI: 10.1002/bab.2439] [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: 12/14/2021] [Accepted: 12/11/2022] [Indexed: 12/29/2022]
Abstract
The present study consists of developing an enzymatic process for the production of wax esters (lauryl stearate and cetyl stearate) by esterification in a heptane medium. Lipase from Thermomyces lanuginosus (TLL) immobilized via interfacial activation on silica particles from rice husks functionalized with triethoxy(octyl)silane (TLL-Octyl-SiO2 ) was used as biocatalyst. Maximum immobilized protein loading of around 22 mg g-1 (that corresponds to an immobilization yield of ≈55%) of support was observed using an initial protein loading of 40 mg g-1 of Octyl-SiO2 . Its hydrolytic activity (olive oil emulsion hydrolysis) was of 620 U g-1 of biocatalyst. The effect of certain factors on the cetyl estearate production was evaluated using a central composite rotatable design (CCDR). Under optimal conditions (64°C, 21% of mass of biocatalyst per volume of reaction mixture, 170 rpm, and stoichiometric acid:alcohol molar ratio 1 mol L-1 of each reactant), maximum acid conversion percentage of 91% was observed after 60 min of reaction. Lauryl stearate was also produced under such conditions, and an acid conversion of 93% after 60 min of reaction was also achieved. Free lipase exhibited acid conversion of only 15%-20% for both reaction mixtures. After nine successive esterification batches, TLL-Octyl-SiO2 retained 85%-90% of its original activity. These results show the promising use of the prepared biocatalyst in wax esters production due to its high catalytic activity and reusability.
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Affiliation(s)
- Natália B Machado
- Institute of Chemistry, Federal University of Alfenas, Alfenas, Minas Gerais, Brazil
| | - Guilherme J Sabi
- Institute of Chemistry, Federal University of Alfenas, Alfenas, Minas Gerais, Brazil
| | - Daniela B Hirata
- Institute of Chemistry, Federal University of Alfenas, Alfenas, Minas Gerais, Brazil
| | - Adriano A Mendes
- Institute of Chemistry, Federal University of Alfenas, Alfenas, Minas Gerais, Brazil
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Hernandez JST, Aragón-Muriel A, Corrales Quintero W, Castro Velásquez JC, Salazar-Camacho NA, Pérez Alcázar GA, Tabares JA. Characterization of Fe 3O 4 Nanoparticles for Applications in Catalytic Activity in the Adsorption/Degradation of Methylene Blue and Esterification. Molecules 2022; 27:molecules27248976. [PMID: 36558109 PMCID: PMC9781974 DOI: 10.3390/molecules27248976] [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: 10/04/2022] [Revised: 12/09/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022] Open
Abstract
The aim of this study is to evaluate the applicability of the catalytic activity (CA) of the Fe3O4 magnetic system in the adsorption/degradation of methylene blue and esterification. The thermal decomposition method allowed the preparation of Fe3O4 nanoparticles. The crystallites of the Fe3O4 structural phase present an acicular form confirmed by X-ray diffraction. Transmission electron microscopy results identified the acicular shape and agglomeration of the nanoparticles. Mössbauer spectroscopy showed that the spectrum is composed of five components at room temperature, a hyperfine magnetic field distribution (HMFD), two sextets, a doublet, and a singlet. The presence of the HMFD means that a particle size distribution is present. Fluorescence spectroscopy studied the CA of the nanoparticles with methylene blue and found adsorption/degradation properties of the dye. The catalytic activity of the nanoparticles was evaluated in the esterification reaction by comparing the results in the presence and absence of catalyst for the reaction with isobutanol and octanol, where it is observed that the selectivity for the products MIBP and MNOP is favored in the first three hours of reaction.
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Affiliation(s)
- Juan Sebastian Trujillo Hernandez
- Grupo de Metalurgia Física y Teoría de Transiciones de Fase, Departamento de Física, Universidad del Valle, Cali 25360, Colombia
- Centro de Excelencia de Nuevos Materiales (CENM), Universidad del Valle, Cali 25360, Colombia
- Correspondence:
| | - Alberto Aragón-Muriel
- Laboratorio de Investigación en Catálisis y Procesos (LICAP), Departamento de Química, Universidad del Valle, Cali 25360, Colombia
| | | | | | | | - German Antonio Pérez Alcázar
- Grupo de Metalurgia Física y Teoría de Transiciones de Fase, Departamento de Física, Universidad del Valle, Cali 25360, Colombia
- Centro de Excelencia de Nuevos Materiales (CENM), Universidad del Valle, Cali 25360, Colombia
| | - Jesús Anselmo Tabares
- Grupo de Metalurgia Física y Teoría de Transiciones de Fase, Departamento de Física, Universidad del Valle, Cali 25360, Colombia
- Centro de Excelencia de Nuevos Materiales (CENM), Universidad del Valle, Cali 25360, Colombia
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Yu X, Xi YK, Luo GY, Long Y, Yang WD. Synthesis of barbacic acid. J Asian Nat Prod Res 2022; 24:1150-1156. [PMID: 34978467 DOI: 10.1080/10286020.2021.2023506] [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: 09/11/2021] [Revised: 12/22/2021] [Accepted: 12/23/2021] [Indexed: 06/14/2023]
Abstract
A new approach for the synthesis of the active barbatic acid has been achieved in eight steps with 22.3% total yield by using commercially available methyl atratate as starting material. This synthesis provides access to multi-gram quantities of barbatic acid with good purity for reference supplies and further analytical and toxicology investigations.
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Affiliation(s)
- Xiang Yu
- College of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550002, China
| | - Yin-Kai Xi
- College of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550002, China
| | - Guo-Yong Luo
- College of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550002, China
| | - Yi Long
- College of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550002, China
| | - Wu-De Yang
- College of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550002, China
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He WS, Sun Y, Li Z, Yang H, Li J, Wang Q, Tan C, Zou B. Enhanced antioxidant capacity of lipoic acid in different food systems through lipase-mediated esterification with phytosterols. J Sci Food Agric 2022; 102:7115-7125. [PMID: 35704042 DOI: 10.1002/jsfa.12073] [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: 04/09/2022] [Revised: 06/03/2022] [Accepted: 06/15/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND α-Lipoic acid has excellent antioxidant activity, but its poor lipid solubility greatly limits its practical application. This study was undertaken (i) to develop a novel and efficient enzymatic synthesis of lipophilic lipoic acid esters using Candida sp. 99-125 lipase as a catalyst; and (ii) to systematically evaluate their antioxidant potential against bulk oil, oil-in-water emulsion (O/W) and cooked ground meat. RESULTS Lipophilic lipoic acid esters were successfully and efficiently synthesized using phytosterols as acyl receptor in the presence of Candida sp. 99-125 lipase. The product was identified as phytosterol lipoate by mass spectrometry, Fourier transform infrared spectroscopy and nuclear magnetic resonance. The maximum conversion of phytosterol lipoate surpassed 90% within 12 h and its final yield exceeded 81%. Interestingly, the oil solubility of lipoic acid was increased at least 25-fold and other physicochemical properties were significantly improved. Most importantly, phytosterol lipoate exhibited higher antioxidant activity than lipoic acid in bulk oil, O/W emulsions and cooked ground meat. CONCLUSION The antioxidant capacity of lipoic acid can be significantly enhanced by esterification with phytosterols. Therefore, phytosterol lipoate could be further developed as a new antioxidant for use in oil- and fat-based foods. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Wen-Sen He
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Yuying Sun
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Zhishuo Li
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Haonan Yang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Junjie Li
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Qingzhi Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Chen Tan
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University (BTBU), Beijing, China
| | - Bin Zou
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu, China
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Javed F, Saif-ul-Allah MW, Ahmed F, Rashid N, Hussain A, Zimmerman WB, Rehman F. Kinetics of Biodiesel Production from Microalgae Using Microbubble Interfacial Technology. Bioengineering (Basel) 2022; 9:bioengineering9120739. [PMID: 36550945 PMCID: PMC9774469 DOI: 10.3390/bioengineering9120739] [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: 10/20/2022] [Revised: 11/18/2022] [Accepted: 11/25/2022] [Indexed: 12/04/2022]
Abstract
As an alternative to fossil fuels, biodiesel can be a source of clean and environmentally friendly energy source. However, its commercial application is limited by expensive feedstock and the slow nature of the pretreatment step-acid catalysis. The conventional approach to carry out this reaction uses stirred tank reactors. Recently, the lab-scale experiments using microbubble mediated mass transfer technology have demonstrated its potential use at commercial scale. However, all the studies conducted so far have been at a lab scale~100 mL of feedstock. To analyze the feasibility of microbubble technology, a larger pilot scale study is required. In this context, a kinetic study of microbubble technology at an intermediate scale is conducted (3 L of oil). Owing to the target for industrial application of the process, a commercial feedstock (Spirulina), microalgae oil (MO) and a commercial catalyst para-toluene sulfonic acid (PTSA) are used. Experiments to characterize the kinetics space (response surface, RSM) required for up-scaling are designed to develop a robust model. The model is compared with that developed by the gated recurrent unit (GRU) method. The maximum biodiesel conversion of 99.45 ± 1.3% is achieved by using these conditions: the molar ratio of MO to MeOH of 1:23.73 ratio, time of 60 min, and a catalyst loading of 3.3 wt% MO with an MO volume of 3 L. Furthermore, predicted models of RSM and GRU show proper fits to the experimental result. It was found that GRU produced a more accurate and robust model with correlation coefficient R2 = 0.9999 and root-mean-squared error (RSME) = 0.0515 in comparison with RSM model with R2 = 0.9844 and RMSE = 3.0832, respectively. Although RSM and GRU are fully empirical representations, they can be used for reactor up-scaling horizontally with microbubbles if the liquid layer height is held constant while the microbubble injection replicates along the floor of the reactor vessel-maintaining the tessellation pattern of the smaller vessel. This scaling approach maintains the local mixing profile, which is the major uncontrolled variable in conventional stirred tank reactor up-scaling.
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Affiliation(s)
- Fahed Javed
- Microfluidics Research Group, Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
| | - Muhammad Waqas Saif-ul-Allah
- Process and Energy Systems Engineering Center-PRESTIGE, Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
| | - Faisal Ahmed
- Process and Energy Systems Engineering Center-PRESTIGE, Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
| | - Naim Rashid
- Division of Sustainable Development, College of Science and Engineering, Hamad Bin Khalifa University, Qatar Foundation, Doha 34110, Qatar
| | - Arif Hussain
- Microfluidics Research Group, Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
| | - William B. Zimmerman
- Department of Chemical and Biological Engineering, The University of Sheffield, Sheffield S10 2TN, UK
| | - Fahad Rehman
- Microfluidics Research Group, Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
- Correspondence: ; Tel.: +92-42-111-001-007; Fax: +92-42-9203100
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