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Sato H, Hashimoto N, Watanabe Y, Ohtaka A. Regiospecificity of Immobilized Candida antarctica Lipase B (CAL-B) towards 2,3-Diacyl-1-O-alkyl Glyceryl Ether in Ethanol. J Oleo Sci 2024; 73:55-63. [PMID: 38171731 DOI: 10.5650/jos.ess23153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024] Open
Abstract
Highly pure 2,3-dioleoyl-1-O-alkyl glyceryl ether (DOGE), whose 1-position is a lipase-tolerant ether bond, was chemically synthesized and its detailed regioselectivity and acyl transfer were confirmed. During ethanolysis using immobilized Candida antarctica lipase B (CAL-B) with DOGE as the substrate, monooleoyl-1-O-alkyl glyceryl ethers (MOGEs) and a few 1-alkyl glyceryl ethers were formed upon consumption of the substrate. The structure of MOGE was confirmed using nuclear magnetic resonance spectroscopy and only the isomer of 2-MOGE was formed, indicating that CAL-B has complete α- regiospecificity. During ethanolysis, 3-MOGE was formed via acyl migration. These results indicate that the formation of 1-alkyl glyceryl ethers is not due to the imperfect regiospecificity of CAL-B, but rather due to ethanolysis of the formed 3-MOGE. The ethanolysis rate at the 3-α-position of DOGE was faster and the rate of acyl transfer was slightly slower for chain lengths greater than 14. These results show for the first time that both deacylation at the 3-position and acyl migration from the 2- to 3-position are affected by the structure of 1-position.
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Affiliation(s)
- Hirofumi Sato
- Osaka Research Institute of Industrial Science and Technology
| | | | - Yomi Watanabe
- Osaka Research Institute of Industrial Science and Technology
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2
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Feiten MC, Morigi I, Di Luccio M, Oliveira JV. Activity and stability of lipase from Candida Antarctica after treatment in pressurized fluids. Biotechnol Lett 2023; 45:287-298. [PMID: 36592260 DOI: 10.1007/s10529-022-03335-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 10/13/2022] [Accepted: 11/28/2022] [Indexed: 01/03/2023]
Abstract
Lipase B from Candida antarctica (CalB) is one of the biocatalysts most used in organic synthesis due to its ability to act in several medium, wide substrate specificity and enantioselectivity, tolerance to non-aqueous environment, and resistance to thermal deactivation. Thus, the objective of this work was to treat CalB in supercritical carbon dioxide (SC-CO2) and liquefied petroleum gas (LPG), and measure its activity before and after high-pressure treatment. Residual specific hydrolytic activities of 132% and 142% were observed when CalB was exposed to SC-CO2 at 35 ℃, 75 bar and 1 h and to LPG at 65 ℃, 30 bar and 1 h, respectively. Residual activity of the enzyme treated at high pressure was still above 100% until the 20th day of storage at low temperatures. There was no difference on the residual activity loss of CalB treated with LPG and stored at different temperatures over time. Greater difference was observed between CalB treated with CO2 and flash-frozen in liquid nitrogen (- 196 ℃) followed by storage in freezer (- 10 ℃) and CalB stored in freezer at - 10 ℃. Such findings encourage deeper studies on CalB as well as other enzymes behavior under different types of pressurized fluids aiming at industrial application.
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Affiliation(s)
- Mirian Cristina Feiten
- Department of Technology, State University of Maringá (UEM), Angelo Moreira da Fonseca Ave, Umuarama, Paraná, 87506-370, Brazil.
| | - Iasmin Morigi
- Department of Chemical and Food Engineering, Federal University of Santa Catarina (UFSC), Technology Center/C.P. 476, Florianópolis, Santa Catarina, 88040-900, Brazil
| | - Marco Di Luccio
- Department of Chemical and Food Engineering, Federal University of Santa Catarina (UFSC), Technology Center/C.P. 476, Florianópolis, Santa Catarina, 88040-900, Brazil
| | - José Vladimir Oliveira
- Department of Chemical and Food Engineering, Federal University of Santa Catarina (UFSC), Technology Center/C.P. 476, Florianópolis, Santa Catarina, 88040-900, Brazil
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3
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Chen W, Xu L, Zhong N. Encapsulation of CALB by nucleotide/metal ions coordination nanoparticles: highly selective catalysis of esterification while poor performance in glycerolysis reaction. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:1812-1822. [PMID: 34460944 DOI: 10.1002/jsfa.11516] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/27/2021] [Accepted: 08/30/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Enzymatic esterification is attracting for particular high-acid oil deacidification. In this study, Candida antarctica lipase B (CALB) was encapsulated into a series of nucleotide-hybrid metal coordination polymers (CPs), which were constructed by guanosine 5'-monophosphate (GMP) and various metals. RESULTS We here found that, most of the present CPs encapsulated CALB (CALB@CPs) samples were highly selective for esterification while poor in glycerolysis reaction. They exhibited quite poor performance in glycerolysis, with triacylglycerols (TAGs) conversion lower than 5%, despite this considerable enzymatic hydrolysis activities were observed. However, they (most of them) showed good performance in esterification of fatty acids and glycerol for TAG synthesis. In addition, the GMP/Tb (CPs constructed by GMP and Tb3+ ) encapsulated CALB (CALB@GMP/Tb) transformed over 98% of oleic acid into glycerides in the high-acid oil deacidification process, and TAG content from 87 to 89% was obtained. Moreover, the CALB@GMP/Tb showed good reusability in the esterification system. CONCLUSION The present CALB@CPs samples are selective for esterification and suitable for high-acid oils deacidification. This work provides a new system for enzymatic selectivity improvement study. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Wenyi Chen
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan, China
| | - Li Xu
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan, China
| | - Nanjing Zhong
- School of Food Science, Guangdong Pharmaceutical University, Zhongshan, China
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Synthesis of symmetrical medium- and long-chain triacylglycerols rich in arachidonic acid at sn-2 position for infant formula. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2021.101344] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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5
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Göksel Saraç M, Doğan M. Rendering waste oil as a new source for the synthesis of emulsifier: optimization, purification, and characterization. INTERNATIONAL JOURNAL OF FOOD ENGINEERING 2021. [DOI: 10.1515/ijfe-2020-0250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The enzymatic glycerolysis conditions in the production emulsifier by using the rendering waste oil were optimized in the present study. The effects of changes in duration (1–27 h), temperature (50–80 °C), enzyme (5–20%), and glycerol (5–20%) concentration, addition of solvent (acetone, acetonitrile, chloroform, methanol, ethanol, and tert-butanol) and water addition (3.5% of glycerol rate), and ultrasound application on the enzymatic glycerolysis reaction medium for mono- and diglyceride production were investigated. After determining the optimum conditions, the effects of the ultrasonic bath on the physic-chemical and rheological properties of emulsifier, the oxidation tests were examined. Using the preparative column chromatography method, three different emulsifier compositions were achieved and named E100, E50-50, and E50-40-10 by their monoglyceride, diglyceride, and triglyceride contents, respectively. Then, the post-purification emulsion properties and rheological behaviors of emulsifier samples were determined. E50-40-10 emulsifier was found to be the best sample in terms of rheological properties and emulsion stability.
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Affiliation(s)
- Meryem Göksel Saraç
- Food Technology Department , Cumhuriyet University, Yıldızeli Vocational College , Sivas , Turkey
| | - Mahmut Doğan
- Department of Food Engineering , Erciyes University, Engineering College , Kayseri , Turkey
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Peng B, Luo T, Chen F, Wang M, Fu JH, Zheng LF, Li J, Deng ZY. Stability comparison of four lipases and catalytic mechanism during the synthesis of 1,3-di-oleic-2-medium chain triacylglycerols in a trace water-in-oil system: Experimental analyses and computational simulations. J Food Biochem 2021; 45:e13667. [PMID: 33837552 DOI: 10.1111/jfbc.13667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 01/02/2021] [Accepted: 01/25/2021] [Indexed: 11/28/2022]
Abstract
In the present study, a kind of structured lipids, namely 1,3-di-oleic-2-medium chain (OMO) triacylglycerols, were synthesized through lipase-catalyzed reactions using coconut oil and rapeseed acid as materials in a trace water-in-oil system. Experimental analysis and computational simulations were undertaken to compare the stability of four lipases including Lipozyme RMIM, Lipozyme TLIM, Novozym 435, and Aspergillus oryzae immobilized lipase (AOIM), and illustrate catalytic mechanism of Novozym 435 during the synthesis of OMO. Fourier transform infrared and molecular dynamics simulation results demonstrated that a decrease in ordered structure (α-helix and β-sheet) led to a reduction in enzyme activity. Compared with Lipozyme RMIM and Novozym 435, Lipozyme TLIM and AOIM exhibited better stability due to a short-chain lid in TLIM, which covers activity sites, and hydrogen bonds formed between activity center of AOIM and water. Among four lipases, AOIM exhibited best catalytic performance: a OMO yield of 30.7% at 3 hr and a good stability of long term (48 hr). Density functional theory results demonstrated that specifically, during the synthesis of OMO triacylglycerol, the addition of Novozym 435 (derived from Candida antarctica lipase B, CALB) substantially lowered reaction barriers (64.4 KJ/mol with CALB vs. 332.7 KJ/mol with no lipase), aiding in the generation of OMO because of the formations of transitional tetrahedral intermediates. A trace water-in-oil system was a green and efficient alternative for lipase-catalyzed production of OMO, and this study provided crucial insights into the stability/instability and catalytic mechanisms of lipase in the synthesis of structured lipids. PRACTICAL APPLICATIONS: We compared the stability of Lipozyme RMIM, Lipozyme 435, Lipozyme TLIM, and AOIM during the synthesis of the OMO triacylglycerols in a trace water-in-oil system, where exhibited a high catalytic activity of lipase in water-oil interface. AOIM had the highest stability and showed the best catalytic performance due to the formation of hydrogen bonds. Besides, for the first time, the transition tetrahedral structure was revealed in the enzymatic synthesis of medium- and long-chain triacylglycerols. This study provides a rational approach to compare lipase stability and a possible hint to choose appropriate enzyme in a specific catalytic condition.
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Affiliation(s)
- Bin Peng
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Ting Luo
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Fang Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China.,School of Public Health, Nanchang University, Nanchang, China
| | - Mei Wang
- The State Centre of Quality Supervision and Inspection for Camellia Products, Ganzhou, China
| | - Jin-Heng Fu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Liu-Feng Zheng
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Jing Li
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Ze-Yuan Deng
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
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Bhatt C, Nielsen PM, Rancke-Madsen A, Woodley JM. Combining technology with liquid-formulated lipases for in-spec biodiesel production. Biotechnol Appl Biochem 2020; 69:7-19. [PMID: 33179313 DOI: 10.1002/bab.2074] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 10/15/2020] [Indexed: 01/02/2023]
Abstract
Enzymatic biodiesel production has been at the forefront of biofuels research in recent decades because of the significant environmental advantages it offers, while having the potential to be as effective as conventional chemically catalyzed biodiesel production. However, the higher capital cost, longer reaction time, and sensitivity of enzyme processes have restricted their widespread industrial adoption so far. It is also posited that the lack of research to bring the biodiesel product into final specification has scuppered industrial confidence in the viability of the enzymatic process. Furthermore, the vast majority of literature has focused on the development of immobilized enzyme processes, which seem too costly (and risky) to be used industrially. There has been little focus on liquid lipase formulations such as the Eversa Transform 2.0, which is in fact already used commercially for triglyceride transesterification. It is the objective of this review to highlight new research that focuses on bringing enzymatically produced biodiesel into specification via a liquid lipase polishing process, and the process considerations that come with it.
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Affiliation(s)
- Chinmayi Bhatt
- Department of Chemical and Biochemical Engineering, Technical University of Denmark (DTU), Kgs Lyngby, Denmark
| | | | | | - John M Woodley
- Department of Chemical and Biochemical Engineering, Technical University of Denmark (DTU), Kgs Lyngby, Denmark
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Wang X, Cheng Y, Jin Q, Wei W, Wang X. Biocatalytic synthesis and characterization of sn-1/3 and sn-2 monoacylglycerols. Biotechnol Lett 2019; 41:789-799. [DOI: 10.1007/s10529-019-02684-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 05/02/2019] [Indexed: 12/25/2022]
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9
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Zhang Y, Wang X, Xie D, Zou S, Jin Q, Wang X. Synthesis and concentration of 2-monoacylglycerols rich in polyunsaturated fatty acids. Food Chem 2018; 250:60-66. [DOI: 10.1016/j.foodchem.2018.01.027] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 12/27/2017] [Accepted: 01/02/2018] [Indexed: 10/18/2022]
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10
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Zhang Y, Wang X, Zou S, Xie D, Jin Q, Wang X. Synthesis of 2-docosahexaenoylglycerol by enzymatic ethanolysis. BIORESOURCE TECHNOLOGY 2018; 251:334-340. [PMID: 29289878 DOI: 10.1016/j.biortech.2017.12.025] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Revised: 12/07/2017] [Accepted: 12/08/2017] [Indexed: 06/07/2023]
Abstract
Synthesis of 2-docosahexaenoylglycerol with high nutritional value was conducted by enzymatic ethanolysis of algal oil. The effects of lipase type, substrate molar ratio of algal oil to ethanol, reaction time, reaction temperature and lipase load on the content of 2-monoacylglycerols (2-MAGs) in the crude product were investigated. Under the optimal conditions, 27-31% 2-MAGs were obtained in the ethanolysis reaction. Lipozyme 435 exhibited 1,3-specific selectivity and maintained stable operational stability after 7 successive reuse cycles. The enzymatic ethanolysis catalyzed by Lipozyme 435 could both synthesize 2-MAGs and concentrate DHA. Further purification of 2-MAGs was performed with solvent extraction by 85% ethanol aqueous solution and hexane, obtaining 95% 2-MAGs in a yield of 67%. The contents of DHA in 2-MAGs product and 2-MAGs fraction were 74.76% and 75.66%, respectively, which were about 26% higher than that in the algal oil. Therefore, this method is efficient and environmental-friendly for synthesis of 2-docosahexaenoylgylcerol.
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Affiliation(s)
- Yu Zhang
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, National Engineering Research Center for Functional Food, School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, PR China
| | - Xiaosan Wang
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, National Engineering Research Center for Functional Food, School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, PR China
| | - Shuo Zou
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, National Engineering Research Center for Functional Food, School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, PR China
| | - Dan Xie
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, National Engineering Research Center for Functional Food, School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, PR China; ZhongHai Ocean (Wuxi) Marine Equipment Engineering Co., Ltd., Jiangnan University National University Science Park, 100 Jinxi Road, Wuxi, Jiangsu 214125, PR China
| | - Qingzhe Jin
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, National Engineering Research Center for Functional Food, School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, PR China
| | - Xingguo Wang
- Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, National Engineering Research Center for Functional Food, School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, PR China.
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11
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Zhao T, Choi N, Kim H, Kim Y, Kim HR, Kim IH. Lipase-Mediated Synthesis of Fatty Acid Esters Using a Blending Alcohol Consisting of Methanol and 1-Butanol. J AM OIL CHEM SOC 2017. [DOI: 10.1007/s11746-017-2967-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Rationale behind the near-ideal catalysis of Candida antarctica lipase A (CAL-A) for highly concentrating ω-3 polyunsaturated fatty acids into monoacylglycerols. Food Chem 2017; 219:230-239. [DOI: 10.1016/j.foodchem.2016.09.149] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 08/27/2016] [Accepted: 09/23/2016] [Indexed: 01/03/2023]
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13
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He Y, Li J, Kodali S, Balle T, Chen B, Guo Z. Liquid lipases for enzymatic concentration of n-3 polyunsaturated fatty acids in monoacylglycerols via ethanolysis: Catalytic specificity and parameterization. BIORESOURCE TECHNOLOGY 2017; 224:445-456. [PMID: 27839863 DOI: 10.1016/j.biortech.2016.10.087] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 10/14/2016] [Accepted: 10/15/2016] [Indexed: 05/13/2023]
Abstract
This work examined catalytic specificity and fatty acid selectivity of five liquid lipases C. antarctica lipase A and B (CAL-A/B), and lipase TL (T. lanuginosus), Eversa Transfrom and NS in ethanolysis of fish oil with the aim to concentrate n-3 PUFAs into monoacylglycerols (MAGs) products. Lipase TL, Eversa Transform & NS entail a much faster reaction and produce higher MAGs yield (>30%); whereas CAL-A obtains the highest concentration of n-3 PUFAs/DHA/EPA into MAGs products (88.30%); followed by lipase NS (81.02%). 13C NMR analysis indicates that CAL-B and lipase TL are sn-1,3 specific; but CAL-A and lipase Eversa Transform are non-regiospecific or weak sn-2 specific; which plausibly explains high enrichment effect of the latter two lipases. All liquid lipases are observed reusable for a certain times (lipase Eversa Transform up to 12 times), demonstrating their competitive advantage over immobilized form for industrial application because of their higher activity and cheaper operation cost.
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Affiliation(s)
- Yongjin He
- Department of Engineering, Aarhus University, Gustav Wieds Vej 10, 8000 Aarhus C, Denmark; College of Life Science, Fujian Normal University, Fuzhou 350117, China
| | - Jingbo Li
- Department of Engineering, Aarhus University, Gustav Wieds Vej 10, 8000 Aarhus C, Denmark
| | - Sitharam Kodali
- Department of Engineering, Aarhus University, Gustav Wieds Vej 10, 8000 Aarhus C, Denmark
| | - Thomas Balle
- Novozymes A/S DK, Krogshojvej 36, 2880 Bagsvaerd, Denmark
| | - Bilian Chen
- College of Life Science, Fujian Normal University, Fuzhou 350117, China; Engineering Research Center of Industrial Microbiology of Ministry of Education, Fujian Normal University, Fuzhou 350117, China
| | - Zheng Guo
- Department of Engineering, Aarhus University, Gustav Wieds Vej 10, 8000 Aarhus C, Denmark.
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14
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Supercritical carbon dioxide as solvent in the lipase-catalyzed ethanolysis of fish oil: Kinetic study. J CO2 UTIL 2017. [DOI: 10.1016/j.jcou.2016.11.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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15
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Tian K, Li Z. High-yielding, one-pot, and green production of biodiesel from waste grease using wet cells of a recombinant Escherichia coli strain as catalyst. Biochem Eng J 2016. [DOI: 10.1016/j.bej.2016.08.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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16
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He Y, Li J, Kodali S, Chen B, Guo Z. The near-ideal catalytic property of Candida antarctica lipase A to highly concentrate n-3 polyunsaturated fatty acids in monoacylglycerols via one-step ethanolysis of triacylglycerols. BIORESOURCE TECHNOLOGY 2016; 219:466-478. [PMID: 27521783 DOI: 10.1016/j.biortech.2016.08.007] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 08/01/2016] [Accepted: 08/03/2016] [Indexed: 06/06/2023]
Abstract
Declining quantity/quality of available n-3 polyunsaturated fatty acids (n-3 PUFAs) resources demand innovative technology to concentrate n-3 PUFAs from low quality oils into value-added products/health-beneficial ingredients rich in n-3 PUFAs. This work proposed the catalytic property and specificity of an ideal enzyme required to tackle this task and identified Candida antarctica lipase A (CAL-A) is such a near-ideal enzyme in practice, which concentrates n-3 PUFAs from 25% to 27% in oils to a theoretically closer value 90% in monoacylglycerols (MAGs) via one-step enzymatic ethanolysis. Non-regiospecificity and high non-n-3 PUFAs preference of CAL-A are the catalytic feature to selectively cleave non-n-3 PUFAs in all 3 positions of triacylglycerols (TAGs); while high ethanol/TAGs ratio, low operation temperature and high tolerance to polar ethanol are essential conditions beyond biocatalyst itself. C-13 Nuclear magnetic resonance ((13)C NMR) analysis and competitive factor estimation verified the hypothesis and confirmed the plausible suggestion of catalytic mechanism of CAL-A.
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Affiliation(s)
- Yongjin He
- College of Life Science, Fujian Normal University, Fuzhou 350117, China; Department of Engineering, Aarhus University, Gustav Wieds Vej 10, 8000 Aarhus C, Denmark
| | - Jingbo Li
- Department of Engineering, Aarhus University, Gustav Wieds Vej 10, 8000 Aarhus C, Denmark
| | - Sitharam Kodali
- Department of Engineering, Aarhus University, Gustav Wieds Vej 10, 8000 Aarhus C, Denmark
| | - Bilian Chen
- College of Life Science, Fujian Normal University, Fuzhou 350117, China; Engineering Research Center of Industrial Microbiology of Ministry of Education, Fujian Normal University, Fuzhou 350117, China.
| | - Zheng Guo
- Department of Engineering, Aarhus University, Gustav Wieds Vej 10, 8000 Aarhus C, Denmark
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17
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Pan Z, Jin S, Zhang X, Zheng S, Han S, Pan L, Lin Y. Biocatalytic behavior of a new Aspergillus niger whole-cell biocatalyst with high operational stability during the synthesis of green biosolvent isopropyl esters. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2016.05.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Choi N, Kim Y, Lee JS, Kwak J, Lee J, Kim IH. Synthesis of Fatty Acid Ethyl Ester from Acid Oil in a Continuous Reactor via an Enzymatic Transesterification. J AM OIL CHEM SOC 2016. [DOI: 10.1007/s11746-016-2786-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Nakyung Choi
- ; Department of Food and Nutrition; Korea University; 145, Anam-ro, Seongbuk-Gu Seoul 136-701 Republic of Korea
- ; BK21PLUS Program in Embodiment: Health-Society Interaction, Department of Public Health Sciences, Graduate School; Korea University; Seoul 136-701 Republic of Korea
| | - Yangha Kim
- ; Department of Nutritional Science and Food Management; Ewha Womans University; Seoul 120-749 Republic of Korea
| | - Jeom-Sig Lee
- ; National Institute of Crop Science; Rural Development Administration; Suwon Gyunggi-do 441-857 Republic of Korea
| | - Jieun Kwak
- ; National Institute of Crop Science; Rural Development Administration; Suwon Gyunggi-do 441-857 Republic of Korea
| | - Junsoo Lee
- ; Department of Food Science and Technology; Chungbuk National University; Cheongju Chungbuk 361-763 Republic of Korea
| | - In-Hwan Kim
- ; Department of Food and Nutrition; Korea University; 145, Anam-ro, Seongbuk-Gu Seoul 136-701 Republic of Korea
- ; BK21PLUS Program in Embodiment: Health-Society Interaction, Department of Public Health Sciences, Graduate School; Korea University; Seoul 136-701 Republic of Korea
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19
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Zeng CX, Qi SJ, Xin RP, Yang B, Wang YH. Enzymatic selective synthesis of 1,3-DAG based on deep eutectic solvent acting as substrate and solvent. Bioprocess Biosyst Eng 2015. [DOI: 10.1007/s00449-015-1445-0] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Liu L, Pang M, Zhang Y. Lipase-catalyzed regioselective synthesis of flavone C-glucosides esters and high-efficiency oil-soluble antioxidant of bamboo leaves (eAOB-o). EUR J LIPID SCI TECH 2015. [DOI: 10.1002/ejlt.201400541] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Lingyi Liu
- Department of Food Science and Nutrition; School of Biosystems Engineering and Food Science; Zhejiang University; Hangzhou Zhejiang, P. R. China
| | - Meirong Pang
- Department of Food Science and Nutrition; School of Biosystems Engineering and Food Science; Zhejiang University; Hangzhou Zhejiang, P. R. China
| | - Ying Zhang
- Department of Food Science and Nutrition; School of Biosystems Engineering and Food Science; Zhejiang University; Hangzhou Zhejiang, P. R. China
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21
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Shang CY, Li WX, Jiang F, Zhang RF. Improved enzymatic properties of Candida rugosa lipase immobilized on ZnO nanowires/macroporous SiO2 microwave absorbing supports. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcatb.2014.12.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Enzymatic activity and conformational and morphological studies of four commercial lipases treated with supercritical carbon dioxide. J Supercrit Fluids 2015. [DOI: 10.1016/j.supflu.2014.11.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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23
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Bucio SL, Solaesa ÁG, Sanz MT, Melgosa R, Beltrán S, Sovová H. Kinetic Study for the Ethanolysis of Fish Oil Catalyzed by Lipozyme ® 435 in Different Reaction Media. J Oleo Sci 2015; 64:431-41. [DOI: 10.5650/jos.ess14263] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - Ángela García Solaesa
- Department of Biotechnology and Food Science (Chemical Engineering Section), University of Burgos
| | - María Teresa Sanz
- Department of Biotechnology and Food Science (Chemical Engineering Section), University of Burgos
| | - Rodrigo Melgosa
- Department of Biotechnology and Food Science (Chemical Engineering Section), University of Burgos
| | - Sagrario Beltrán
- Department of Biotechnology and Food Science (Chemical Engineering Section), University of Burgos
| | - Helena Sovová
- Institute of Chemical Process Fundamentals of the Academy of Sciences of the Czech Republic
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24
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Naik MK, Naik S, Mohanty S. Enzymatic glycerolysis for conversion of sunflower oil to food based emulsifiers. Catal Today 2014. [DOI: 10.1016/j.cattod.2013.11.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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25
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Zha B, Chen Z, Wang L, Wang R, Chen Z, Zheng L. Production of glycerol monolaurate-enriched monoacylglycerols by lipase-catalyzed glycerolysis from coconut oil. EUR J LIPID SCI TECH 2014. [DOI: 10.1002/ejlt.201300243] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Baoping Zha
- State Key Laboratory of Food Science and Technol ogy, Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education, National Engineering Laboratory for Cereal Fermentation Technol ogy, and School of Food Science and Technology; Jiangnan University; Wuxi Jiangsu Province, People's Republic of China
| | - Zhongwei Chen
- State Key Laboratory of Food Science and Technol ogy, Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education, National Engineering Laboratory for Cereal Fermentation Technol ogy, and School of Food Science and Technology; Jiangnan University; Wuxi Jiangsu Province, People's Republic of China
| | - Li Wang
- State Key Laboratory of Food Science and Technol ogy, Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education, National Engineering Laboratory for Cereal Fermentation Technol ogy, and School of Food Science and Technology; Jiangnan University; Wuxi Jiangsu Province, People's Republic of China
| | - Ren Wang
- State Key Laboratory of Food Science and Technol ogy, Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education, National Engineering Laboratory for Cereal Fermentation Technol ogy, and School of Food Science and Technology; Jiangnan University; Wuxi Jiangsu Province, People's Republic of China
| | - Zhengxing Chen
- State Key Laboratory of Food Science and Technol ogy, Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education, National Engineering Laboratory for Cereal Fermentation Technol ogy, and School of Food Science and Technology; Jiangnan University; Wuxi Jiangsu Province, People's Republic of China
| | - Lianhe Zheng
- Hainan Institute of Grain and Oil Sciences; Qionghai Hainan Province, P. R. China
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26
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Zhong N, Gui Z, Xu L, Huang J, Hu K, Gao Y, Zhang X, Xu Z, Su J, Li B. Solvent-free enzymatic synthesis of 1, 3-diacylglycerols by direct esterification of glycerol with saturated fatty acids. Lipids Health Dis 2013; 12:65. [PMID: 23656739 PMCID: PMC3680111 DOI: 10.1186/1476-511x-12-65] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Accepted: 04/26/2013] [Indexed: 11/21/2022] Open
Abstract
Background Pure 1, 3-diacylglycerols (1, 3-DAG) have been considered to be significant surfactants in food, cosmetics and pharmaceutical industries, as well as the effect on obesity prevention. Methods In this study, a vacuum-driven air bubbling operation mode was developed and evaluated for the enzymatic synthesis of 1, 3-DAG of saturated fatty acids, by direct esterification of glycerol with fatty acids in a solvent-free system. The employed vacuum-driven air bubbling operation mode was comparable to vacuum-driven N2 bubbling protocol, in terms of lauric acid conversion and 1, 3-dilaurin content. Results Some operation parameters were optimized, and 95.3% of lauric acid conversion and 80.3% of 1, 3-dilaurin content was obtained after 3-h reaction at 50°C, with 5 wt% of Lipozyme RM IM (based on reactants) amount. Of the lipases studied, both Lipozyme RM IM and Novozym 435 exhibited good performance in terms of lauric acid conversion. Lipozyme TL IM, however, showed low activity. Lipozyme RM IM showed good operational stability in this operation protocol, 80.2% of the original catalytic activity remained after 10 consecutive batch applications. Some other 1, 3-DAG were prepared and high content was obtained after purification: 98.5% for 1, 3-dicaprylin, 99.2% for 1, 3-dicaprin, 99.1% for 1, 3-dilaurin, 99.5 for 1, 3-dipalmitin and 99.4% for 1, 3-disterin. Conclusion The established vacuum-driven air bubbling operation protocol had been demonstrated to be a simple-operating, cost-effective, application practical and efficient methodology for 1, 3-DAG preparation.
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27
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Fernández Ó, Vázquez L, Reglero G, Torres CF. Discrimination against diacylglycerol ethers in lipase-catalysed ethanolysis of shark liver oil. Food Chem 2013; 136:464-71. [DOI: 10.1016/j.foodchem.2012.08.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Revised: 07/31/2012] [Accepted: 08/02/2012] [Indexed: 10/28/2022]
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28
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Panpipat W, Xu X, Guo Z. Towards a commercially potential process: Enzymatic recovery of phytosterols from plant oil deodoriser distillates mixture. Process Biochem 2012. [DOI: 10.1016/j.procbio.2012.04.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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29
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A rational approach to the regioselective deacetylation of 2′,3′,5′-tri-O-acetyluridine by Novozym 435 catalysed alcoholysis. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2012; 1824:627-36. [DOI: 10.1016/j.bbapap.2012.01.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Revised: 12/30/2011] [Accepted: 01/17/2012] [Indexed: 10/14/2022]
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30
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Zhao T, Kim BH, Hong SI, Yoon SW, Kim CT, Kim Y, Kim IH. Lipase-Catalyzed Production of Pinolenic Acid Concentrate from Pine Nut Oil Using a Recirculating Packed Bed Reactor. J Food Sci 2012; 77:C267-71. [DOI: 10.1111/j.1750-3841.2011.02562.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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Wan LS, Li QL, Chen PC, Xu ZK. Patterned biocatalytic films via one-step self-assembly. Chem Commun (Camb) 2012; 48:4417-9. [DOI: 10.1039/c2cc17451k] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Yoshida A, Hama S, Nakashima K, Kondo A. Water activity dependence of performance of surface-displayed lipase in yeast cells: A unique water requirement for enzymatic synthetic reaction in organic media. Enzyme Microb Technol 2011; 48:334-8. [DOI: 10.1016/j.enzmictec.2010.12.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2010] [Revised: 12/15/2010] [Accepted: 12/15/2010] [Indexed: 11/30/2022]
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33
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34
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35
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Criado M, Otero C. Optimization of the synthesis of lower glycerides rich in unsaturated fatty acid residues obtained via enzymatic ethanolysis of sesame oil. EUR J LIPID SCI TECH 2010. [DOI: 10.1002/ejlt.200900159] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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36
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Reyes-Duarte D, López-Cortés N, Ferrer M, Plou FJ, Ballesteros A. Parameters affecting productivity in the lipase-catalysed synthesis of sucrose palmitate. BIOCATAL BIOTRANSFOR 2009. [DOI: 10.1080/10242420500071763] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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37
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An Efficient Binary Solvent Mixture for Monoacylglycerol Synthesis by Enzymatic Glycerolysis. J AM OIL CHEM SOC 2009. [DOI: 10.1007/s11746-009-1402-7] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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38
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Zhang H, Önal G, Wijesundera C, Xu X. Practical synthesis of 1,3-oleoyl 2-docosahexaenoylglycerol by lipase-catalyzed reactions: An evaluation of different reaction routes. Process Biochem 2009. [DOI: 10.1016/j.procbio.2009.01.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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39
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Enzymatic Synthesis of Structured Triacylglycerols Containing CLA Isomers Starting from sn-1,3-Diacylglycerols. J AM OIL CHEM SOC 2008. [DOI: 10.1007/s11746-008-1334-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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40
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Deng L, Nakano H, Iwasaki Y. Direct separation of monoacylglycerol isomers by enantioselective high-performance liquid chromatography. J Chromatogr A 2008; 1198-1199:67-72. [DOI: 10.1016/j.chroma.2008.03.095] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2007] [Revised: 02/25/2008] [Accepted: 03/13/2008] [Indexed: 11/30/2022]
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41
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Influence of self-assembled monolayer surface chemistry on Candida antarctica lipase B adsorption and specific activity. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.molcatb.2007.06.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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42
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Deng L, Nakano H, Iwasaki Y. Direct separation of regioisomers and enantiomers of monoacylglycerols by tandem column high-performance liquid chromatography. J Chromatogr A 2007; 1165:93-9. [PMID: 17692859 DOI: 10.1016/j.chroma.2007.07.073] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2007] [Revised: 07/23/2007] [Accepted: 07/25/2007] [Indexed: 11/26/2022]
Abstract
An HPLC-based method for direct separation of the regioisomers and enantiomers of monoacylglycerols (MAGs), i.e. sn-1-MAG, sn-2-MAG and sn-3-MAG, has been established. The method employs a tandem column system, in which two different columns (a conventional silica gel column and an enantioselective column) are connected in series. Three isomers of monooleoylglycerols (MOGs) and monolinoleoylglycerols (MLGs) were resolved on the system with resolution factor (R(s)) of more than 1.1 between adjacent peaks. In addition, all types of oleoylglycerols, i.e. trioleoylglycerol (TOG), sn-1,2-dioleoylglycerol (DOG), sn-2,3-DOG, sn-1,3-DOG, sn-1-MOG, sn-3-MOG and sn-2-MOG, were successfully separated on the tandem column system, although baseline separation of the enantiomers was not achieved. By means of the established analytical method, the reaction course of Candida antarctica lipase B (CALB)-mediated esterification of glycerol with oleic acid was monitored. It was found that sn-1-MOG and sn-2,3-DOG were preferably generated over sn-3-MOG and sn-1,2-DOG, respectively, in the early stage of the reaction, and the maximal enantiomer excess (%ee) of sn-1-MOG and sn-2,3-DOG were 32 and 53%, respectively, at 2 h. The enantiomeric purities of these chiral acylglycerols decreased after prolonged reaction. The mechanisms for the formation of these chiral acylglycerols are discussed.
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Affiliation(s)
- Li Deng
- Laboratory of Molecular Biotechnology, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8610, Japan
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43
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44
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Enzymatic glycerolysis and transesterification of vegetable oil for enhanced production of feruloylated glycerols. J AM OIL CHEM SOC 2006. [DOI: 10.1007/s11746-006-5012-3] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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45
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Enzymatic preparation of enantiomerically pure sn
-2,3-diacylglycerols: A stereoselective ethanolysis approach. J AM OIL CHEM SOC 2006. [DOI: 10.1007/s11746-006-1245-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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46
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Yoshida Y, Kimura Y, Adachi S. Thermal inactivation of immobilized lipase in 1-alcohols. J Biosci Bioeng 2006; 102:66-8. [PMID: 16952839 DOI: 10.1263/jbb.102.66] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2006] [Accepted: 03/30/2006] [Indexed: 11/17/2022]
Abstract
The thermal inactivation of immobilized lipase from Candida antarctica in 1-alcohols with four to eight carbons at various temperatures could be well expressed using a model in which heterogeneity in the susceptibility of the enzyme to the inactivation was assumed. It was found that the enthalpy-entropy compensation held for inactivation in 1-alcohols.
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Affiliation(s)
- Yayoi Yoshida
- Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
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47
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Blank K, Morfill J, Gumpp H, Gaub HE. Functional expression of Candida antarctica lipase B in Eschericha coli. J Biotechnol 2006; 125:474-83. [PMID: 16713003 DOI: 10.1016/j.jbiotec.2006.04.004] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2005] [Revised: 03/24/2006] [Accepted: 04/04/2006] [Indexed: 11/18/2022]
Abstract
Candida antarctica lipase B (CalB) is an important catalyst in bio-organic synthesis. To optimize its performance, either the reaction medium is changed or the lipase itself is modified. In the latter case, mutants are generated in Eschericha coli and subsequently expressed in fungal hosts for their characterization. Here we present the functional expression of CalB in the periplasm of E. coli. By step-wise deletion of the CalB signal and propeptide we were able to express and purify two different variants of CalB (mature CalB and CalB with its propeptide). A N-terminal FLAG and a C-terminal His tag were used for the purification. For the substrates para-nitrophenol butyrate (p-NPB), para-nitrophenol laurate (p-NPL) and carboxyfluorescein diacetate (CFDA) the specific activity was shown to be similar to CalB expressed in Aspergillus oryzae. The kinetic constants k(M), v(max) and k(cat) were determined using the substrates p-NPB and p-NPL. Almost identical k(cat)/k(M) values (0.423-0.466 min(-1) microM(-1) for p-NPB and 0.068-0.071 min(-1) microM(-1) for p-NPL) were obtained for the CalB variants from E. coli and A. oryzae. The results clearly show that CalB can be functionally expressed in E. coli and that the attachment of tags does not alter the properties of the lipase.
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Affiliation(s)
- Kerstin Blank
- Lehrstuhl für Angewandte Physik & Center for Nanoscience, LMU München, Amalienstrasse 54, 80799 München, Germany
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YANG TIANKUI, REBSDORF MORTEN, ENGELRUD ULRIK, XU XUEBING. MONOACYLGLYCEROL SYNTHESIS VIA ENZYMATIC GLYCEROLYSIS USING A SIMPLE AND EFFICIENT REACTION SYSTEM. ACTA ACUST UNITED AC 2005. [DOI: 10.1111/j.1745-4522.2005.00025.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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49
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Deng L, Xu X, Haraldsson GG, Tan T, Wang F. Enzymatic production of alkyl esters through alcoholysis: A critical evaluation of lipases and alcohols. J AM OIL CHEM SOC 2005. [DOI: 10.1007/s11746-005-1076-3] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Li Deng
- ; BioCentrum-DTU; Technical University of Denmark; Building 221, 2800 Kgs. Lyngby Denmark
- ; Department of Biochemical Engineering; Beijing University of Chemical Technology; Beijing China
| | - Xuebing Xu
- ; BioCentrum-DTU; Technical University of Denmark; Building 221, 2800 Kgs. Lyngby Denmark
| | | | - Tianwei Tan
- ; Department of Biochemical Engineering; Beijing University of Chemical Technology; Beijing China
| | - Fang Wang
- ; Department of Biochemical Engineering; Beijing University of Chemical Technology; Beijing China
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50
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Piyatheerawong W, Iwasaki Y, Yamane T. Direct separation of regio- and enantiomeric isomers of diacylglycerols by a tandem column high-performance liquid chromatography. J Chromatogr A 2005; 1068:243-8. [PMID: 15830930 DOI: 10.1016/j.chroma.2005.01.075] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
A novel HPLC-based method for direct separation of the three isomers of mono-acid diacylglycerols (DAGs), i.e., 1,2-DAG, 2,3-DAG and 1,3-DAG, has been established. The method employs a tandem column system, in which two different columns (a conventional silica gel column and a chiral stationary phase column) are connected in series. Two isomeric mixtures of DAGs (i.e., dicapryloylglycerol and dioleoylglycerol) and lipase-catalyzed reaction mixtures were successfully resolved on the tandem column HPLC system without any derivatization prior to the analysis. According to the established analytical method, stereoselectivity of two lipases toward mono-acid triacylglycerols in ethanolysis reaction was investigated. The tested enzymes were immobilized Candida antarctica lipase B (CALB) and Rhizomucor miehei lipase (RML). Analyses of the enantiomeric purity of 1,2-DAG and 2,3-DAG, generated as intermediates during the reaction, revealed that CALB and RML have sn-3 and sn-1 stereopreference, respectively.
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Affiliation(s)
- Weera Piyatheerawong
- Laboratory of Molecular Biotechnology, Graduate School of Bio- and Agro-Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
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