1
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Biochemical characterization, substrate and stereoselectivity of an outer surface putative α/β hydrolase from the pathogenic Leptospira. Int J Biol Macromol 2023; 229:803-813. [PMID: 36587638 DOI: 10.1016/j.ijbiomac.2022.12.283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/13/2022] [Accepted: 12/25/2022] [Indexed: 12/30/2022]
Abstract
The genome of pathogenic leptospira encodes a plethora of outer surface and secretory proteins. The outer surface or secreted α/β hydrolases in a few pathogenic organisms are crucial virulent factors. They hydrolyze host immune factors and pathogen's immune-activating ligands, which help pathogens to evade the host's innate immunity. In this study, we report biochemical characterizations, substrate and stereoselectivity of one of the leptospiral outer surface putative α/β hydrolases, IQB77_09235 (LABH). Purified LABH displayed better kinetic parameters towards small water-soluble esters such as p-nitrophenyl acetate and p-nitrophenyl butyrate. The LABH exhibited moderate thermostability and displayed a pH optimum of 8.5. Remarkably, a phylogenetic study suggested that LABH does not cluster with other characterized bacterial esterases or lipases. Protein structural modeling revealed that some structural features are closely associated with Staphylococcus hycus lipase (SAH), a triacylglycerol hydrolase. The hydrolytic activity of the protein was found to be inhibited by a lipase inhibitor, orlistat. Biocatalytic application of the protein in the kinetic resolution of racemic 1-phenylethyl acetate reveals excellent enantioselectivity (E > 500) in the production of (R)-1-phenylethanol, a valuable chiral synthon in several industries. To our knowledge, this is the first detailed characterization of outer surface α/β hydrolases from leptospiral spp.
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2
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Wang MY, Cai SJ, Lin JC, Ji XJ, Zhang ZG. New Anti-Prelog Stereospecific Whole-Cell Biocatalyst for Asymmetric Reduction of Prochiral Ketones. Molecules 2023; 28:molecules28031422. [PMID: 36771091 PMCID: PMC9921870 DOI: 10.3390/molecules28031422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 01/27/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023] Open
Abstract
The biocatalytic asymmetric reduction of prochiral ketones for the production of enantiopure alcohols is highly desirable due to its inherent advantages over chemical methods. In this study, a new bacterial strain capable of transforming ketones to corresponding alcohols with high activity and excellent enantioselectivity was discovered in a soil sample. The strain was subsequently identified as Bacillus cereus TQ-2 based on its physiological characteristics and 16S rDNA sequence analysis. Under optimized reaction conditions, the resting cells of B. cereus TQ-2 converted acetophenone to enantioenriched (R)-1-phenylethanol with 99% enantiometric excess following anti-Prelog's rule, which is scarce in biocatalytic ketone reduction. The optimum temperature for the cells was 30 °C, and considerable catalytic activity was observed over a broad pH range from 5.0 to 9.0. The cells showed enhanced catalytic activity in the presence of 15% (v/v) glycerol as a co-substrate. The catalytic activity can also be substantially improved by adding Ca2+ or K+ ions. Moreover, the B. cereus TQ-2 cell was highly active in reducing several structurally diverse ketones and aldehydes to form corresponding alcohols with good to excellent conversion. Our study provides a versatile whole-cell biocatalyst that can be used in the asymmetric reduction of ketones for the production of chiral alcohol, thereby expanding the biocatalytic toolbox for potential practical applications.
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Affiliation(s)
- Min-Yu Wang
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211800, China
| | - Shun-Ju Cai
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211800, China
| | - Jia-Chun Lin
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211800, China
| | - Xiao-Jun Ji
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing 211800, China
| | - Zhi-Gang Zhang
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing 211800, China
- Correspondence:
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3
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The Application of Two-Phase Catalytic System in Enantioselective Separation of Racemic (R,S)-1-Phenylethanol. Catalysts 2023. [DOI: 10.3390/catal13020292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Kinetic resolution is one of the methods which allows obtaining enantiomerically pure compounds. In the study presented herein, enantioselective biotransformations of (R,S)-1-phenylethanol were performed with the use of various catalytic systems containing ionic liquids and n-heptane or toluene as a reaction medium, vinyl acetate or isopropenyl acetate as an acetylating agent, and lipases from Burkholderia cepacia or Candida rugosa. The conducted studies proved that the use of Burkholderia cepacia lipase, vinyl acetate, and n-heptane with [EMIM][BF4] allows obtaining enantiomerically pure 1-phenylethyl acetate, with the enantiomeric excess of products eep = 98.9%, conversion c = 40.1%, and high value of enantioselectivity E > 200. Additionally, the use of ionic liquids allowed us to reuse enzyme in 5 reaction cycles, ensuring the high operational stability of the protein.
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4
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Wang J, Peng Y, Xu J, Wu Q. Deracemization of racemic alcohols combining photooxidation and biocatalytic reduction. Org Biomol Chem 2022; 20:7765-7769. [PMID: 36165209 DOI: 10.1039/d2ob01386j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We described a cascade reaction for deracemization of racemic alcohols combining photooxidation and enzymatic reduction under mild conditions without the isolation of intermediate ketones. Using different ketoreductases, a variety of racemic alcohols can be successfully converted into (R)- or (S)-enantiomers in high yields (up to 95%) and stereoselectivity (up to 99%).
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Affiliation(s)
- Jianfeng Wang
- Xingzhi College, Zhejiang Normal University, Lanxi 321100, China. .,Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
| | - Yongzhen Peng
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
| | - Jian Xu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Qi Wu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
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5
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Dulęba J, Siódmiak T, Marszałł MP. The influence of substrate systems on the enantioselective and lipolytic activity of immobilized Amano PS from Burkholderia cepacia lipase (APS-BCL). Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.06.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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6
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Enantioselective Enzymatic Synthesis of (
R
)‐Phenyl Alkyl Esters and Their Analogue Amides using Fatty Acids as Green Acyl Donors. ChemistrySelect 2021. [DOI: 10.1002/slct.202103831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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7
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Ethanol as additive enhance the performance of immobilized lipase LipA from Pseudomonas aeruginosa on polypropylene support. ACTA ACUST UNITED AC 2021; 31:e00659. [PMID: 34367924 PMCID: PMC8326728 DOI: 10.1016/j.btre.2021.e00659] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 07/14/2021] [Indexed: 11/20/2022]
Abstract
Immobilization is practical to upgrade enzymes, increasing their performance and expanding their applications. The recombinant, solvent tolerant lipase LipA PSA01 from Pseudomonas aeruginosa was immobilized on polypropylene Accurel® MP1004 to improve its performance. We investigated the effect of ethanol as an additive during the immobilization process at three concentrations (20%, 25%, and 30%) on the operational behavior of the enzyme. The immobilization efficiency was higher than 92%, and the immobilized enzymes showed hyperactivation and thermal resistance depending on the concentration of ethanol. For example, at 70 °C, the free enzyme lost the activity, while the prepared one with ethanol 25% conserved a residual activity of up to 73.3% (∆ T15 50 = 27.1 °C). LipA immobilized had an optimal pH value lower than that of the free enzyme, and the organic solvent tolerance of the immobilized enzymes depended on the ethanol used. Hence, the immobilized enzyme with ethanol 25% showed hyperactivation to more solvents than the soluble enzyme. Remarkable stability towards methanol (up to 8 folds) was evidenced in all the immobilized preparations. The immobilized enzyme changed their chemo preference, and it hydrolyzed oils preferentially with short-chain than those with long-chain. LipA had a notable shelf-life after one year, keeping its activity up to 87%. Ethanol facilitated the access of the enzyme to the hydrophobic support and increased its activity and stability according to the amount of ethanol added.
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8
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Dong L, Qi S, Jia J, Zhang Y, Hu Y. Enantioselective resolution of (±)-1-phenylethyl acetate using the immobilized extracellular proteases from deep-sea Bacillus sp. DL-1. BIOCATAL BIOTRANSFOR 2021. [DOI: 10.1080/10242422.2021.1897579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Lu Dong
- Guangdong Key Laboratory of Marine Materia Medical, South China Sea Institute of Oceanology, Chinese Academy of Sciences, CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangzhou, PR China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, PR China
| | - Shujuan Qi
- The Affiliated Traditional Chinese Medicine Hospital of Guangzhou Medical University, Guangzhou, PR China
| | - Jianwei Jia
- International College, Guangzhou University of Chinese Medicine, Guangzhou, PR China
| | - Yun Zhang
- Guangdong Key Laboratory of Marine Materia Medical, South China Sea Institute of Oceanology, Chinese Academy of Sciences, CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangzhou, PR China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, PR China
- Equipment Public Service Center, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, PR China
| | - Yunfeng Hu
- Guangdong Key Laboratory of Marine Materia Medical, South China Sea Institute of Oceanology, Chinese Academy of Sciences, CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangzhou, PR China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, PR China
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9
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Fermented solids that contain lipases produced by Rhizopus microsporus have an S-enantiopreference in the resolution of secondary alcohols. Biochem Eng J 2021. [DOI: 10.1016/j.bej.2020.107817] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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10
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Wang W, Li L, Wang X, Qiu T, Yang J, Ye C. Reaction kinetic studies on the immobilized-lipase catalyzed enzymatic resolution of 1-phenylethanol transesterification with ethyl butyrate. BIOCATAL BIOTRANSFOR 2020. [DOI: 10.1080/10242422.2020.1855150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Weican Wang
- College of Chemical Engineering, Fuzhou University, Fuzhou, China
| | - Ling Li
- College of Chemical Engineering, Fuzhou University, Fuzhou, China
| | - Xiaoda Wang
- College of Chemical Engineering, Fuzhou University, Fuzhou, China
| | - Ting Qiu
- College of Chemical Engineering, Fuzhou University, Fuzhou, China
| | - Jianhao Yang
- College of Chemical Engineering, Fuzhou University, Fuzhou, China
| | - Changshen Ye
- College of Chemical Engineering, Fuzhou University, Fuzhou, China
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11
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Dulęba J, Siódmiak T, Marszałł MP. Amano Lipase PS from Burkholderia cepacia- Evaluation of the Effect of Substrates and Reaction Media on the Catalytic Activity. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824666200408092305] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
:
Lipases in the native or immobilized form have commonly been used as catalysts
in the chemical and pharmaceutical industry. One of the widely available enzyme
catalysts on the market is lipase from Burkholderia cepacia (BCLs), previously called
Pseudomonas cepacia (PCLs). This enzyme is applied, among others, in the stereoselective
acylation of molecules to achieve chiral pure enantiomers of drugs or their building
blocks. In this study, Amano lipase PS (APS-BCL), which is a commercial lipase from
Burkholderia cepacia (BC) was tested. The lipolytic activity of APS-BCL by hydrolysis
of vegetable oils and enantioselective activity of APS-BCL by the kinetic resolution of
(R,S)-1-phenylethanol with using isopropenyl acetate as an acyl donor were evaluated. An
effect of reaction media with different logP values (t-butyl methyl ether, dichloromethane,
diisopropyl ether, toluene, cyclohexane, n-hexane, isooctane and n-heptane) on the enantioselective activity of
lipase was also studied. The high value of the enantiomeric ratio (E =308.5) with the utilization of isopropenyl
acetate was achieved. Whereas, the best reaction medium turned out to be diisopropyl ether, C =47.9%, eep
=98%, ees =90%, after 24 h of incubation. Moreover, the influence of ω6/ω9 polyunsaturated fatty acids (PUFAs)
ratio in commercial (peanut, camelina, rape, pumpkin seed, walnut, sesame, avocado, rice, corn, black
cumin, hemp, safflower, grape seed) oils was investigated for the lipase activity. For the first time, the cut-off
limit of ω6/ω9 ratio was proposed. The ratio equal to or higher than 2.3 allows achieving higher lipolytic activity.
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Affiliation(s)
- Jacek Dulęba
- Department of Medicinal Chemistry, Collegium Medicum in Bydgoszcz, Faculty of Pharmacy, Nicolaus Copernicus University in Torun, Dr. A. Jurasza 2, 85-089 Bydgoszcz, Poland
| | - Tomasz Siódmiak
- Department of Medicinal Chemistry, Collegium Medicum in Bydgoszcz, Faculty of Pharmacy, Nicolaus Copernicus University in Torun, Dr. A. Jurasza 2, 85-089 Bydgoszcz, Poland
| | - Michał Piotr Marszałł
- Department of Medicinal Chemistry, Collegium Medicum in Bydgoszcz, Faculty of Pharmacy, Nicolaus Copernicus University in Torun, Dr. A. Jurasza 2, 85-089 Bydgoszcz, Poland
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12
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Immobilization of Pseudomonas cepacia lipase on layered double hydroxide of Zn/Al-Cl for kinetic resolution of rac-1-phenylethanol. Enzyme Microb Technol 2019; 130:109365. [DOI: 10.1016/j.enzmictec.2019.109365] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 06/16/2019] [Accepted: 06/19/2019] [Indexed: 11/22/2022]
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13
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Yan HD, Guo BH, Wang Z, Qian JQ. Surfactant-modified Aspergillus oryzae lipase as a highly active and enantioselective catalyst for the kinetic resolution of ( RS)-1-phenylethanol. 3 Biotech 2019; 9:265. [PMID: 31218176 PMCID: PMC6562008 DOI: 10.1007/s13205-019-1796-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 06/03/2019] [Indexed: 12/18/2022] Open
Abstract
The lipase from Aspergillus oryzae was modified with a surfactant and then observed to exhibit high catalytic efficiency and enantioselectivity for the kinetic resolution of (RS)-1-phenylethanol. The influential factors of the modified-lipase preparation were investigated, including the surfactant source, the organic cosolvent, and the buffer pH. The optimum modification conditions were found with a surfactant of polyoxyethylene sorbitan monopalmitate, an organic cosolvent of tetrahydrofuran and a phosphate buffer of pH 7.0. In the transesterification of (RS)-1-phenylethanol with vinyl acetate, the surfactant-modified lipase showed excellent enantioselectivity for the R-isomer (E > 200), giving an enantiomeric excess of higher than 99% for (R)-1-phenylethyl acetate at 46.8% conversion with the reaction time of 2 h at 30 °C. The enzymatic activity had barely altered after 30 days even at 50 °C when it was saved in a powdered state. The results indicated that the modification strategy was useful and highly efficient, and that modified A. oryzae lipase was a promising biocatalyst in the kinetic resolution of (RS)-1-phenylethanol.
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Affiliation(s)
- Hong De Yan
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014 People’s Republic of China
| | - Bing Han Guo
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014 People’s Republic of China
| | - Zhao Wang
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014 People’s Republic of China
| | - Jun Qing Qian
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014 People’s Republic of China
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014 People’s Republic of China
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14
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Cen Y, Li D, Xu J, Wu Q, Wu Q, Lin X. Highly Focused Library‐Based Engineering of
Candida antarctica
Lipase B with (
S
)‐Selectivity Towards
sec
‐Alcohols. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800711] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yixin Cen
- Department of ChemistryZhejiang University Hangzhou 310027 People's Republic of China
| | - Danyang Li
- Department of ChemistryZhejiang University Hangzhou 310027 People's Republic of China
| | - Jian Xu
- Department of ChemistryZhejiang University Hangzhou 310027 People's Republic of China
| | - Qiongsi Wu
- Department of ChemistryZhejiang University Hangzhou 310027 People's Republic of China
| | - Qi Wu
- Department of ChemistryZhejiang University Hangzhou 310027 People's Republic of China
| | - Xianfu Lin
- Department of ChemistryZhejiang University Hangzhou 310027 People's Republic of China
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15
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One pot kinetic resolution and product separation with corn germ oil and supercritical carbon dioxide. J Supercrit Fluids 2018. [DOI: 10.1016/j.supflu.2018.01.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Todea A, Borza P, Cimporescu A, Paul C, Peter F. Continuous kinetic resolution of aliphatic and aromatic secondary alcohols by sol-gel entrapped lipases in packed bed bioreactors. Catal Today 2018. [DOI: 10.1016/j.cattod.2017.02.042] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Chen Y, Zhou Y, Zeng L, Dong F, Tu Y, Yang Z. Occurrence of Functional Molecules in the Flowers of Tea (Camellia sinensis) Plants: Evidence for a Second Resource. Molecules 2018; 23:molecules23040790. [PMID: 29596355 PMCID: PMC6017242 DOI: 10.3390/molecules23040790] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 03/27/2018] [Accepted: 03/27/2018] [Indexed: 11/16/2022] Open
Abstract
Tea (Camellia sinensis) is an important crop, and its leaves are used to make the most widely consumed beverage, aside from water. People have been using leaves from tea plants to make teas for a long time. However, less attention has been paid to the flowers of tea plants, which is a waste of an abundant resource. In the past 15 years, researchers have attempted to discover, identify, and evaluate functional molecules from tea flowers, and have made insightful and useful discoveries. Here, we summarize the recent investigations into these functional molecules in tea flowers, including functional molecules similar to those in tea leaves, as well as the preponderant functional molecules in tea flowers. Tea flowers contain representative metabolites similar to those of tea leaves, such as catechins, flavonols, caffeine, and amino acids. The preponderant functional molecules in tea flowers include saponins, polysaccharides, aromatic compounds, spermidine derivatives, and functional proteins. We also review the safety and biological functions of tea flowers. Tea flower extracts are proposed to be of no toxicological concern based on evidence from the evaluation of mutagenicity, and acute and subchronic toxicity in rats. The presence of many functional metabolites in tea flowers indicates that tea flowers possess diverse biological functions, which are mostly related to catechins, polysaccharides, and saponins. Finally, we discuss the potential for, and challenges facing, future applications of tea flowers as a second resource from tea plants.
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Affiliation(s)
- Yiyong Chen
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou 510650, China.
- Tea Research Institute, Guangdong Academy of Agricultural Sciences & Guangdong Provincial Key Laboratory of Tea Plant Resources Innovation and Utilization, Dafeng Road 6, Tianhe District, Guangzhou 510640, China.
| | - Ying Zhou
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou 510650, China.
| | - Lanting Zeng
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou 510650, China.
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China.
| | - Fang Dong
- Guangdong Food and Drug Vocational College, Longdongbei Road 321, Tianhe District, Guangzhou 510520, China.
| | - Youying Tu
- Department of Tea Science, Zhejiang University, 388 Yuhangtang Road, Hangzhou 310058, China.
| | - Ziyin Yang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Xingke Road 723, Tianhe District, Guangzhou 510650, China.
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China.
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18
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Zhang X, Yang J, Yang C, Chen X, Bao B, Li D, Shi R, Wang J, Pu S, Zhang X. Purification and Characterization of a Novel (R)-1-Phenylethanol Dehydrogenase from Lysinibacillus sp. NUST506. APPL BIOCHEM MICRO+ 2018. [DOI: 10.1134/s0003683818020126] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Chanysheva AR, Vorobyova EN, Zorin VV. Enantioselective Bioreduction of Acetophenone into (R)- and (S)-1-Phenylethanols. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s1070363217130229] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Immobilized Burkholderia cepacia Lipase on pH-Responsive Pullulan Derivatives with Improved Enantioselectivity in Chiral Resolution. Catalysts 2018. [DOI: 10.3390/catal8010013] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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21
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Magadum DB, Yadav GD. Design of tandem catalyst by co-immobilization of metal and enzyme on mesoporous foam for cascaded synthesis of (R)-phenyl ethyl acetate. Biochem Eng J 2018. [DOI: 10.1016/j.bej.2017.10.011] [Citation(s) in RCA: 14] [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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22
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Mittersteiner M, Linshalm BL, Vieira APF, Brondani PB, Scharf DR, de Jesus PC. Convenient enzymatic resolution of (R,S)-2-methylbutyric acid catalyzed by immobilized lipases. Chirality 2017; 30:106-111. [DOI: 10.1002/chir.22779] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 08/29/2017] [Accepted: 10/01/2017] [Indexed: 11/05/2022]
Affiliation(s)
| | | | | | - Patrícia Bulegon Brondani
- Departmento de Ciências Exatas e Educação; Universidade Federal de Santa Catarina; Blumenau SC Brazil
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23
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Decarlini MF, Aimar ML, Vázquez AM, Vero S, Rossi LI, Yang P. Fungi isolated from food samples for an efficient stereoselective production of phenylethanols. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2017. [DOI: 10.1016/j.bcab.2017.10.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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24
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Varga Z, Kmecz I, Szécsényi Á, Székely E. Neat lipase-catalysed kinetic resolution of racemic 1-phenylethanol and a straightforward modelling of the reaction. BIOCATAL BIOTRANSFOR 2017. [DOI: 10.1080/10242422.2017.1360292] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Zsófia Varga
- Department of Chemical and Environmental Process Engineering, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Ildikó Kmecz
- Department of Chemical and Environmental Process Engineering, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Ágnes Szécsényi
- Department of Chemical and Environmental Process Engineering, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Edit Székely
- Department of Chemical and Environmental Process Engineering, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Budapest, Hungary
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25
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An NADPH-dependent Lactobacillus composti short-chain dehydrogenase/reductase: characterization and application to (R)-1-phenylethanol synthesis. World J Microbiol Biotechnol 2017. [DOI: 10.1007/s11274-017-2311-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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26
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Magnetically Recoverable Pd/Fe
3
O
4
Core–Shell Nanowire Clusters with Increased Hydrogenation Activity. Chempluschem 2017; 82:347-351. [DOI: 10.1002/cplu.201700009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Indexed: 11/07/2022]
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27
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Mathpati AC, Bhanage BM. Combined docking and molecular dynamics study of lipase catalyzed kinetic resolution of 1-phenylethanol in organic solvents. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2016.12.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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28
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Han H, Zhou Y, Li S, Wang Y, Kong XZ. Immobilization of Lipase from Pseudomonas fluorescens on Porous Polyurea and Its Application in Kinetic Resolution of Racemic 1-Phenylethanol. ACS APPLIED MATERIALS & INTERFACES 2016; 8:25714-25724. [PMID: 27618157 DOI: 10.1021/acsami.6b07979] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A porous polyurea (PPU) was prepared through a simple protocol by reacting toluene diisocyanate with water in binary solvent of water-acetone. Its amine group was determined through spectrophotometric absorbance based on its iminization with p-nitrobenzaldehyde amines. PPU was then used as a novel polymer support for enzyme immobilization, through activation by glutaraldehyde followed by immobilization of an enzyme, lipase from Pseudomonas fluorescens (PFL), via covalent bonding with the amine groups of lipase molecules. Influences of glutaraldehyde and enzyme concentration and pH in the process were studied. The results revealed that the activity of the immobilized PFL reached a maximum at GA concentration of 0.17 mol/L and at pH 8. Immobilization rate of 60% or higher for PFL was obtained under optimized condition with an enzyme activity of 283 U/mg. The porous structure of PPU, prior to and after GA activation and PFL immobilization, was characterized. The activity of the immobilized PFL at different temperature and pH and its stability at 40 °C as well as its reusability were tested. The immobilized enzyme was finally used as enantioselective catalyst in kinetic resolution of racemic 1-phenylethanol (1-PEOH), and its performance compared with the free PFL. The results demonstrate that the enzyme activity and stability were greatly improved for the immobilized PFL, and highly pure enantiomers from racemic 1-PEOH were effectively achieved using the immobilized PFL. Noticeable deactivation of PFL in the resolution was observed by acetaldehyde in situ formed. In addition, the immobilized PFL was readily recovered from the reaction system for reuse. A total of 73% of the initial activity was retained after 5 repeated reuse cycles. This work provides a novel route to preparation of a polyurea porous material and its enzyme immobilization, leading to a novel type of immobilized enzyme for efficient kinetic resolution of racemic molecules.
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Affiliation(s)
- Hui Han
- College of Chemistry and Chemical Engineering, University of Jinan , Jinan 250022, China
- University of Chinese Academy of Sciences , Beijing 100049, China
| | - Yamei Zhou
- College of Chemistry and Chemical Engineering, University of Jinan , Jinan 250022, China
| | - Shusheng Li
- College of Chemistry and Chemical Engineering, University of Jinan , Jinan 250022, China
- College of Chemistry and Chemical Engineering, Shandong University , Jinan 250100, China
| | - Yinping Wang
- College of Chemistry and Chemical Engineering, University of Jinan , Jinan 250022, China
| | - Xiang Zheng Kong
- College of Chemistry and Chemical Engineering, University of Jinan , Jinan 250022, China
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29
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Yan HD, Wang Z, Qian JQ. Efficient kinetic resolution of (RS
)-1-phenylethanol by a mycelium-bound lipase from a wild-type Aspergillus oryzae
strain. Biotechnol Appl Biochem 2016; 64:251-258. [DOI: 10.1002/bab.1484] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 02/01/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Hong-De Yan
- College of Biological and Environmental Engineering; Zhejiang University of Technology; Hangzhou People's Republic of China
| | - Zhao Wang
- College of Biological and Environmental Engineering; Zhejiang University of Technology; Hangzhou People's Republic of China
| | - Jun-Qing Qian
- College of Biological and Environmental Engineering; Zhejiang University of Technology; Hangzhou People's Republic of China
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30
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Synthesis of 1-(S)-phenylethanol and ethyl (R)-4-chloro-3-hydroxybutanoate using recombinant Rhodococcus erythropolis alcohol dehydrogenase produced by two yeast species. Biochem Eng J 2016. [DOI: 10.1016/j.bej.2015.11.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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31
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Deng D, Zhang Y, Sun A, Liang J, Hu Y. Functional Characterization of a Novel Marine Microbial GDSL Lipase and Its Utilization in the Resolution of (±)-1-Phenylethanol. Appl Biochem Biotechnol 2016; 179:75-93. [DOI: 10.1007/s12010-016-1980-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Accepted: 01/04/2016] [Indexed: 12/26/2022]
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32
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Ke C, Fan Y, Chen Y, Xu L, Yan Y. A new lipase–inorganic hybrid nanoflower with enhanced enzyme activity. RSC Adv 2016. [DOI: 10.1039/c6ra01564f] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new hybrid nanoflower biocatalyst was synthesized using the organic component of Burkholderia cepacia lipase and inorganic component of calcium phosphate.
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Affiliation(s)
- C. Ke
- Key Laboratory of Molecular Biophysics of the Ministry of Education
- College of Life Science and Technology
- Huazhong University of Science and Technology
- Wuhan 430074
- China
| | - Y. Fan
- Key Laboratory of Molecular Biophysics of the Ministry of Education
- College of Life Science and Technology
- Huazhong University of Science and Technology
- Wuhan 430074
- China
| | - Y. Chen
- Key Laboratory of Molecular Biophysics of the Ministry of Education
- College of Life Science and Technology
- Huazhong University of Science and Technology
- Wuhan 430074
- China
| | - L. Xu
- Key Laboratory of Molecular Biophysics of the Ministry of Education
- College of Life Science and Technology
- Huazhong University of Science and Technology
- Wuhan 430074
- China
| | - Y. Yan
- Key Laboratory of Molecular Biophysics of the Ministry of Education
- College of Life Science and Technology
- Huazhong University of Science and Technology
- Wuhan 430074
- China
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33
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Enantioselective Resolution of (±)-1-Phenylethanol and (±)-1-Phenylethyl Acetate by a Novel Esterase from Bacillus sp. SCSIO 15121. Appl Biochem Biotechnol 2015; 178:558-75. [DOI: 10.1007/s12010-015-1894-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2015] [Accepted: 10/08/2015] [Indexed: 11/29/2022]
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34
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Che Marzuki NH, Mahat NA, Huyop F, Buang NA, Wahab RA. Candida rugosa Lipase Immobilized onto Acid-Functionalized Multi-walled Carbon Nanotubes for Sustainable Production of Methyl Oleate. Appl Biochem Biotechnol 2015; 177:967-84. [DOI: 10.1007/s12010-015-1791-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2015] [Accepted: 07/30/2015] [Indexed: 10/23/2022]
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35
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Cui C, Xie R, Tao Y, Zeng Q, Chen B. Improving performance ofYarrowia lipolyticalipase lip2-catalyzed kinetic resolution of (R, S)-1-phenylethanol by solvent engineering. BIOCATAL BIOTRANSFOR 2015. [DOI: 10.3109/10242422.2015.1018190] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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36
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CAL-B-Catalyzed Enantioselective Deacetylation of Some Benzylic Acetate Derivatives Via Alcoholysis in Non-aqueous Media. Catal Letters 2015. [DOI: 10.1007/s10562-014-1470-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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37
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Hu C, Wang N, Zhang W, Zhang S, Meng Y, Yu X. Immobilization of Aspergillus terreus lipase in self-assembled hollow nanospheres for enantioselective hydrolysis of ketoprofen vinyl ester. J Biotechnol 2015; 194:12-8. [DOI: 10.1016/j.jbiotec.2014.11.032] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 11/25/2014] [Accepted: 11/28/2014] [Indexed: 10/24/2022]
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38
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Ke C, Li X, Huang S, Xu L, Yan Y. Enhancing enzyme activity and enantioselectivity of Burkholderia cepacia lipase via immobilization on modified multi-walled carbon nanotubes. RSC Adv 2014. [DOI: 10.1039/c4ra10517f] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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39
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Zhu L, Zhou L, Huang N, Cui W, Liu Z, Xiao K, Zhou Z. Efficient preparation of enantiopure D-phenylalanine through asymmetric resolution using immobilized phenylalanine ammonia-lyase from Rhodotorula glutinis JN-1 in a recirculating packed-bed reactor. PLoS One 2014; 9:e108586. [PMID: 25268937 PMCID: PMC4182499 DOI: 10.1371/journal.pone.0108586] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 08/22/2014] [Indexed: 11/18/2022] Open
Abstract
An efficient enzymatic process was developed to produce optically pure D-phenylalanine through asymmetric resolution of the racemic DL-phenylalanine using immobilized phenylalanine ammonia-lyase (RgPAL) from Rhodotorula glutinis JN-1. RgPAL was immobilized on a modified mesoporous silica support (MCM-41-NH-GA). The resulting MCM-41-NH-GA-RgPAL showed high activity and stability. The resolution efficiency using MCM-41-NH-GA-RgPAL in a recirculating packed-bed reactor (RPBR) was higher than that in a stirred-tank reactor. Under optimal operational conditions, the volumetric conversion rate of L-phenylalanine and the productivity of D-phenylalanine reached 96.7 mM h⁻¹ and 0.32 g L⁻¹ h⁻¹, respectively. The optical purity (eeD) of D-phenylalanine exceeded 99%. The RPBR ran continuously for 16 batches, the conversion ratio did not decrease. The reactor was scaled up 25-fold, and the productivity of D-phenylalanine (eeD>99%) in the scaled-up reactor reached 7.2 g L⁻¹ h⁻¹. These results suggest that the resolution process is an alternative method to produce highly pure D-phenylalanine.
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Affiliation(s)
- Longbao Zhu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
- School of Biochemical Engineering, Anhui Polytechnic University, Wuhu, Anhui, China
| | - Li Zhou
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
| | - Nan Huang
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
| | - Wenjing Cui
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
| | - Zhongmei Liu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
| | - Ke Xiao
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
| | - Zhemin Zhou
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
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40
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Szaleniec M, Dudzik A, Kozik B, Borowski T, Heider J, Witko M. Mechanistic basis for the enantioselectivity of the anaerobic hydroxylation of alkylaromatic compounds by ethylbenzene dehydrogenase. J Inorg Biochem 2014; 139:9-20. [PMID: 24950385 DOI: 10.1016/j.jinorgbio.2014.05.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 05/16/2014] [Accepted: 05/18/2014] [Indexed: 11/26/2022]
Abstract
The enantioselectivity of reactions catalyzed by ethylbenzene dehydrogenase, a molybdenum enzyme that catalyzes the oxygen-independent hydroxylation of many alkylaromatic and alkylheterocyclic compounds to secondary alcohols, was studied by chiral chromatography and theoretical modeling. Chromatographic analyses of 22 substrates revealed that this enzyme exhibits remarkably high reaction enantioselectivity toward (S)-secondary alcohols (18 substrates converted with >99% ee). Theoretical QM:MM modeling was used to elucidate the structure of the catalytically active form of the enzyme and to study the reaction mechanism and factors determining its high degree of enantioselectivity. This analysis showed that the enzyme imposes strong stereoselectivity on the reaction by discriminating the hydrogen atom abstracted from the substrate. Activation of the pro(S) hydrogen atom was calculated to be 500 times faster than of the pro(R) hydrogen atom. The actual hydroxylation step (i.e., hydroxyl group rebound reaction to a carbocation intermediate) does not appear to be enantioselective enough to explain the experimental data (the calculated rate ratios were in the range of only 2-50 for pro(S): pro(R)-oriented OH rebound).
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Affiliation(s)
- Maciej Szaleniec
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Kraków, Poland.
| | - Agnieszka Dudzik
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Kraków, Poland
| | - Bartłomiej Kozik
- Department of Organic Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland
| | - Tomasz Borowski
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Kraków, Poland
| | - Johann Heider
- Laboratory for Microbial Biochemistry, Philipps University of Marburg, Karl-von-Frisch Strasse 8, D-35043 Marburg, Germany
| | - Małgorzata Witko
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Kraków, Poland
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41
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A sensitive colorimetric high-throughput screening method for lipase synthetic activity assay. Anal Biochem 2014; 452:13-5. [PMID: 24525041 DOI: 10.1016/j.ab.2014.02.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2013] [Revised: 01/20/2014] [Accepted: 02/03/2014] [Indexed: 11/23/2022]
Abstract
A sensitive and practical high-throughput screening method for assaying lipase synthetic activity is described. Lipase-catalyzed transesterification between vinyl acetate and n-butanol in n-hexane was chosen as a model reaction. The released acetaldehyde was determined by the colorimetric method using 3-methyl-2-benzothialinone (MBTH) derivatization. In comparison with other methods, the major advantages of this process include high sensitivity, simple detection, inexpensive reagents, and low requirements for instruments.
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42
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Li X, Xu L, Wang G, Zhang H, Yan Y. Conformation studies on Burkholderia cenocepacia lipase via resolution of racemic 1-phenylethanol in non-aqueous medium and its process optimization. Process Biochem 2013. [DOI: 10.1016/j.procbio.2013.09.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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43
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Li X, Huang S, Xu L, Yan Y. Improving activity and enantioselectivity of lipase via immobilization on macroporous resin for resolution of racemic 1- phenylethanol in non-aqueous medium. BMC Biotechnol 2013; 13:92. [PMID: 24168516 PMCID: PMC4228463 DOI: 10.1186/1472-6750-13-92] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Accepted: 10/23/2013] [Indexed: 11/18/2022] Open
Abstract
Background Burkholderia cepacia lipase (BCL) has been proved to be capable of resolution reactions. However, its free form usually exhibits low stability, bad resistance and no reusability, which restrict its further industrial applications. Therefore, it is of great importance to improve the catalytic performance of free lipase in non-aqueous medium. Results In this work, macroporous resin NKA (MPR-NKA) was utilized as support for lipase immobilization. Racemic transesterification of 1-phenylethanol with vinyl acetate was chosen as model reaction. Compared with its free form, the enzyme activity and enantioselectivity (ees) of the immobilized lipase have been significantly enhanced. The immobilized BCL exhibited a satisfactory thermostability over a wide range of temperature (from 10 to 65°C) and an excellent catalytic efficiency. After being used for more than 30 successive batches, the immobilized lipase still kept most of its activity. In comparison with other immobilized lipases, the immobilized BCL also exhibits better catalytic efficiency, which indicates a significant potential in industrial applications. Conclusion The results of this study have proved that MPR-NKA was an excellent support for immobilization of lipase via the methods of N2 adsorption–desorption, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and Fourier transform-infrared spectroscopy (FT-IR). The improvement of enzyme activity and ees for the immobilized lipase was closely correlated with the alteration of its secondary structure. This information may contribute to a better understanding of the mechanism of immobilization and enzymatic biotransformation in non-aqueous medium.
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Affiliation(s)
| | | | | | - Yunjun Yan
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China.
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44
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Dudzik A, Kozik B, Tataruch M, Wójcik A, Knack D, Borowski T, Heider J, Witko M, Szaleniec M. The reaction mechanism of chiral hydroxylation of p-OH and p-NH2 substituted compounds by ethylbenzene dehydrogenase. CAN J CHEM 2013. [DOI: 10.1139/cjc-2012-0504] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Ethylbenzene dehydrogenase (EbDH; enzyme commission (EC) number: 1.17.99.2) is a unique biocatalyst that hydroxylates alkylaromatic and alkylheterocyclic compounds to (S)-secondary alcohols under anaerobic conditions. The enzyme exhibits a high promiscuity catalyzing oxidation of over 30 substrates, inter alia, para-substituted alkylphenols and alkylanilines. Secondary alcohols with OH and NH2 substituents in the aromatic ring are highly valuable synthons for many biologically active compounds in the fine chemical industry. EbDH hydroxylates most of the studied compounds highly enantioselectively, except for five substrates that harbour OH and NH2 groups in the para position, which exhibit a significant decrease in the percent enantiomeric excess (% ee). This phenomenon is inconsistent with the previously suggested enzyme mechanism, but it may be linked to a stabilization of the carbocation intermediate by deprotonation of the OH or NH2 substituent in the active site that yields a transient quinone (imine) ethide species. This would initiate an alternative reaction pathway involving the addition of a water molecule to a C=C double bond. This hypothesis was cross-validated by density functional theory (DFT) cluster modelling of the alternative reaction pathway with 4-ethylphenol, as well as by experimental assessment of the pH dependency of enantiomeric excesses. The results reported herein suggest that the alternative reaction pathway may significantly contribute to the overall reaction if the carbocation intermediates are stabilized by deprotonation.
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Affiliation(s)
- Agnieszka Dudzik
- Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences Niezapominajek 8, 30-239 Kraków, Poland
| | - Bartłomiej Kozik
- Department of Organic Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland
| | - Mateusz Tataruch
- Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences Niezapominajek 8, 30-239 Kraków, Poland
| | - Anna Wójcik
- Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences Niezapominajek 8, 30-239 Kraków, Poland
| | - Daniel Knack
- Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences Niezapominajek 8, 30-239 Kraków, Poland
- Laboratory for Microbial Biochemistry, Philipps University of Marburg, Karl-von-Frisch Strasse 8, D-35043 Marburg, Germany
| | - Tomasz Borowski
- Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences Niezapominajek 8, 30-239 Kraków, Poland
| | - Johann Heider
- Laboratory for Microbial Biochemistry, Philipps University of Marburg, Karl-von-Frisch Strasse 8, D-35043 Marburg, Germany
| | - Małgorzata Witko
- Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences Niezapominajek 8, 30-239 Kraków, Poland
| | - Maciej Szaleniec
- Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences Niezapominajek 8, 30-239 Kraków, Poland
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45
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Immobilization and Biochemical Properties of the Enantioselective Recombinant NStcI Esterase of Aspergillus nidulans. Enzyme Res 2013; 2013:928913. [PMID: 23781330 PMCID: PMC3678419 DOI: 10.1155/2013/928913] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 03/11/2013] [Accepted: 03/11/2013] [Indexed: 11/23/2022] Open
Abstract
The recombinant NStcI A. nidulans esterase was adsorbed on Accurel MP1000, where protein yield and immobilization efficiency were 42.48% and 81.94%, respectively. Storage stability test at 4°C and RT showed 100% of residual activity after 40 days at both temperatures. The biocatalyst retains more than 70% of its initial activity after 3 cycles of repeated use. Biochemical properties of this new biocatalyst were obtained. Maximum activity was achieved at pH 11 and 30°C, while the best stability was observed with the pH between 9 and 11 at 40°C. NStcI thermostability was increased after immobilization, as it retained 47.5% of its initial activity after 1 h at 60°C, while the free enzyme under the same conditions displayed no activity. NStcI preserved 70% of its initial activity in 100% hexane after 72 h. Enzymatic kinetic resolution of (R,S)-1-phenylethanol was chosen as model reaction, using vinyl acetate as acyl donor. After optimization of reaction parameters, the highest possible conversion (42%) was reached at 37°C, aw of 0.07, and 120 h of bioconversion in hexane with an enantiomeric excess of 71.7%. NStcI has selectivity for (R)-enantiomer. The obtained E value (31.3) is in the range considered useful to resolve enantiomeric mixtures.
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47
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Yeniad B, Köklükaya NO, Naik H, Fijten MWM, Koning CE, Heise A. Synthesis of enantiopure homo and copolymers by raft polymerization and investigation of their enantioselective lipase-catalyzed esterification. ACTA ACUST UNITED AC 2012. [DOI: 10.1002/pola.26272] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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48
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Yadav S, Yadav R, Yadav K. Stereoselective benzylic hydroxylation of ethylbenzene and propylbenzene using the mycelia of Aspergillus flavus MTCC-1783 and MTCC-1884. CAN J CHEM 2012. [DOI: 10.1139/v2012-034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The aim of this study was to provide syntheses of optically pure (R)-1-phenylethanol and (R)-1-phenylpropanol from ethylbenzene and propylbenzene, respectively, using the fungal mycelia of new fungal species, namely Aspergillus flavus MTCC-1783 and Aspergillus flavus MTCC-1884, as catalysts. The mycelia of A. flavus MTCC- 1783 and A. flavus MTCC-1884 were prepared by growing the fungal strains in liquid culture medium containing ethylmethylketone as the sole carbon source. The mycelia were suspended in potassium phosphate buffer pH 7.0. The suspensions of mycelia were used for the transformations of ethylbenzene and propylbenzene. Ethylbenzene and propylbenzene were converted to (R)-1-phenylethanol and (R)-1-phenylpropanol, in 100% and 99% ee, respectively. The mycelia of A. flavus MTCC-1783 and A. flavus MTCC-1884 can be used for the preparation of (R)-1-phenylethanol and (R)-1-phenylpropanol in 100% and 99% ee, respectively, from ethylbenzene and propylbenzene, respectively. The studies report convenient methods for the syntheses of optically pure isomers, (R)-1-phenylethanol and (R)-1-phenylpropanol, which are important chiral building blocks in the preparations of fine chemicals and pharmaceuticals. The reactions are ecofriendly, occur at 30 °C, and the time required was 24 h.
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Affiliation(s)
- Saroj Yadav
- Department of Chemistry, D.D.U. Gorakhpur University, Gorakhpur-273 009, India
| | - R.S.S. Yadav
- Department of Chemistry, D.D.U. Gorakhpur University, Gorakhpur-273 009, India
| | - K.D.S. Yadav
- Department of Chemistry, D.D.U. Gorakhpur University, Gorakhpur-273 009, India
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Yang C, Ying X, Yu M, Zhang Y, Xiong B, Song Q, Wang Z. Towards the discovery of alcohol dehydrogenases: NAD(P)H fluorescence-based screening and characterization of the newly isolated Rhodococcus erythropolis WZ010 in the preparation of chiral aryl secondary alcohols. J Ind Microbiol Biotechnol 2012; 39:1431-43. [PMID: 22743788 DOI: 10.1007/s10295-012-1160-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Accepted: 06/11/2012] [Indexed: 10/28/2022]
Abstract
A simple and reliable procedure was developed to screen biocatalysts with high alcohol dehydrogenase activity, efficient internal coenzyme regeneration, and high stereoselectivity. The strategy of activity screening in a microtitre plate format was based on the detection of fluorescence of NAD(P)H originating from the oxidation of alcohols. The primary and secondary screenings from soil samples yielded a versatile bacterial biocatalyst Rhodococcus erythropolis WZ010 demonstrating potential for the preparation of chiral aryl secondary alcohols. In terms of activity and stereoselectivity, the optimized reaction conditions in the stereoselective oxidation were 30 °C, pH 10.5, and 250 rpm, whereas bioreduction using glucose as co-substrate was the most favorable at 35 °C and pH 7.5 in the static reaction mixture. Under the optimized conditions, fresh cells of the strain stereoselectively oxidized the (S)-enantiomer of racemic 1-phenylethanol (120 mM) to acetophenone and afforded the unoxidized (R)-1-phenylethanol in 49.4 % yield and >99.9 % enantiomeric excess (e.e.). In the reduction of 10 mM acetophenone, the addition of 100 mM glucose significantly increased the conversion rate from 3.1 to 97.4 %. In the presence of 800 mM glucose, acetophenone and other aromatic ketones (80 mM) were enantioselectively reduced to corresponding (S)-alcohols with excellent e.e. values. Both stereoselective oxidation and asymmetric reduction required no external cofactor regeneration system.
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Affiliation(s)
- Chi Yang
- College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou, 310014 Zhejiang, China
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Lipase entrapment in protamine-induced bio-zirconia particles: Characterization and application to the resolution of (R,S)-1-phenylethanol. Enzyme Microb Technol 2012; 51:40-6. [DOI: 10.1016/j.enzmictec.2012.03.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Revised: 03/15/2012] [Accepted: 03/29/2012] [Indexed: 11/18/2022]
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