1
|
Zhang Y, Zhang W, Ma G, Nian B, Hu Y. Octadecyl and sulfonyl modification of diatomite synergistically improved the immobilization efficiency of lipase and its application in the synthesis of pine sterol esters. Biotechnol J 2024; 19:e2300615. [PMID: 38472086 DOI: 10.1002/biot.202300615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 01/19/2024] [Accepted: 01/22/2024] [Indexed: 03/14/2024]
Abstract
Phytosterols usually have to be esterified to various phytosterol esters to avoid their disadvantages of unsatisfactory solubility and low bioavailability. The enzymatic synthesis of phytosterol esters in a solvent-free system has advantages in terms of environmental friendliness, sustainability, and selectivity. However, the limitation of the low stability and recyclability of the lipase in the solvent-free system, which often requires a relatively high temperature to induce the viscosity, also increased the industrial production cost. In this context, a low-cost material, namely diatomite, was employed as the support in the immobilization of Candida rugosa lipase (CRL) due to its multiple modification sites. The Fe3 O4 was also then introduced to this system for quick and simple separation via the magnetic field. Moreover, to further enhance the immobilization efficiency of diatomite, a modification strategy which involved the octadecyl and sulfonyl group for regulating the hydrophobicity and interaction between the support and lipase was successfully developed. The optimization of the ratio of the modifiers suggested that the -SO3 H/C18 (1:1.5) performed best with an enzyme loading and enzyme activity of 84.8 mg·g-1 and 54 U·g-1 , respectively. Compared with free CRL, the thermal and storage stability of CRL@OSMD was significantly improved, which lays the foundation for the catalytic synthesis of phytosterol esters in solvent-free systems. Fortunately, a yield of 95.0% was achieved after optimizing the reaction conditions, and a yield of 70.0% can still be maintained after six cycles.
Collapse
Affiliation(s)
- Yifei Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, China
| | - Wei Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, China
| | - Guangzheng Ma
- State Key Laboratory of Materials-Oriented Chemical Engineering, School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, China
| | - Binbin Nian
- State Key Laboratory of Materials-Oriented Chemical Engineering, School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, China
| | - Yi Hu
- State Key Laboratory of Materials-Oriented Chemical Engineering, School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, China
| |
Collapse
|
2
|
Liu C, Tan L, Zhang K, Wang W, Ma L. Immobilization of Horseradish Peroxidase for Phenol Degradation. ACS OMEGA 2023; 8:26906-26915. [PMID: 37546652 PMCID: PMC10398862 DOI: 10.1021/acsomega.3c01570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 07/05/2023] [Indexed: 08/08/2023]
Abstract
The use of enzymes to degrade environmental pollutants has received wide attention as an emerging green approach. Horseradish peroxidase (HRP) can efficiently catalyze the degradation of phenol in the environment; however, free HRP exhibits poor stability and temperature sensitivity and is easily deactivated, which limit its practical applications. In this study, to improve their thermal stability, HRP enzymes were immobilized on mesoporous molecular sieves (Al-MCM-41). Specifically, Al-MCM-41(W) and Al-MCM-41(H) were prepared by modifying the mesoporous molecular sieve Al-MCM-41 with glutaraldehyde and epichlorohydrin, respectively, and used as carriers to immobilize HRP on their surface, by covalent linkage, to form the immobilized enzymes HRP@Al-MCM-41(W) and HRP@Al-MCM-41(H). Notably, the maximum reaction rate of HRP@Al-MCM-41(H) was increased from 2.886 × 105 (free enzyme) to 5.896 × 105 U/min-1, and its half-life at 50 °C was increased from 745.17 to 1968.02 min; the thermal stability of the immobilized enzyme was also significantly improved. In addition, we elucidated the mechanism of phenol degradation by HRP, which provides a basis for the application of this enzyme to phenol degradation.
Collapse
Affiliation(s)
- Can Liu
- Key
Laboratory for Northern Urban Agriculture of Ministry of Agriculture
and Rural Affairs, Beijing University of
Agriculture, Beinong Road 7, Huilongguan, Changping District, Beijing 102206, PR China
| | - Li Tan
- Key
Laboratory for Northern Urban Agriculture of Ministry of Agriculture
and Rural Affairs, Beijing University of
Agriculture, Beinong Road 7, Huilongguan, Changping District, Beijing 102206, PR China
| | - Kaixin Zhang
- Key
Laboratory for Northern Urban Agriculture of Ministry of Agriculture
and Rural Affairs, Beijing University of
Agriculture, Beinong Road 7, Huilongguan, Changping District, Beijing 102206, PR China
| | - Wenyi Wang
- Key
Laboratory for Northern Urban Agriculture of Ministry of Agriculture
and Rural Affairs, Beijing University of
Agriculture, Beinong Road 7, Huilongguan, Changping District, Beijing 102206, PR China
| | - Lanqing Ma
- Key
Laboratory for Northern Urban Agriculture of Ministry of Agriculture
and Rural Affairs, Beijing University of
Agriculture, Beinong Road 7, Huilongguan, Changping District, Beijing 102206, PR China
- Beijing
Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beinong Road 7, Huilongguan, Changping
District, Beijing 102206, PR China
| |
Collapse
|
3
|
Zhang S, Hou H, Zhao B, Zhou Q, Tang R, Chen L, Mao J, Deng Q, Zheng L, Shi J. Hollow Mesoporous Carbon-Based Enzyme Nanoreactor for the Confined and Interfacial Biocatalytic Synthesis of Phytosterol Esters. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:2014-2025. [PMID: 36688464 DOI: 10.1021/acs.jafc.2c06756] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Rationally designing carriers to obtain efficient and stable immobilized enzymes for the production of food raw materials is always a challenge. In this work, hollow cube carbon (HMC) as a carrier of Candida rugosa lipase (CRL) was prepared to construct a Pickering interfacial biocatalysis system, which was applied to biphasic biocatalysis. For comparison, the nonporous carbon (HC) and porous MoS2 (HMoS2) were also designed. On these grounds, p-NPP and linolenic acid were selected as the representative substrates for hydrolysis and esterification reactions. Under the optimal conditions, the protein loading amount, specific activity, and expressed activity of CRL immobilized on HMC (HMC@CRL) were 167.2 mg g-1, 5.41 U mg-1, and 32.34 U/mg protein, respectively. In the "oil-water" biphase, the relative hydrolytic activity of HMC@CRL was higher than that of HC@CRL, HMoS2@CRL, and CRL by 50, 68, and 80%, respectively, as well as itself in one phase. Compared to other reports (1.13%), HMC@CRL demonstrated a satisfactory hydrolysis rate (3.02%) and was the fastest among all other biocatalysts in the biphase. Moreover, compared with the free CRL in one-phase system, the Pickering interfacial biphasic biocatalyst, HMC@CRL, exhibited a higher esterification rate (85%, 2.7-fold enhancement). Therefore, the HMC@CRL nanoreactors had more optimal performance in the field of biomanufacturing and food industry.
Collapse
Affiliation(s)
- Shan Zhang
- Engineering Research Center of Bio-process, Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui230009, China
- Key Laboratory of Biology and Genetic Improvement of Oil Crop, Key Laboratory of Oilseeds Processing, Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, Hubei430062, China
| | - Huaqing Hou
- Engineering Research Center of Bio-process, Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui230009, China
| | - Baozhu Zhao
- Engineering Research Center of Bio-process, Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui230009, China
| | - Qi Zhou
- Key Laboratory of Biology and Genetic Improvement of Oil Crop, Key Laboratory of Oilseeds Processing, Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, Hubei430062, China
| | - Rongfeng Tang
- CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui230041, P. R. China
| | - Lin Chen
- School of Economics and Management, Chinese-German Competence Center for Teachers in Applied Universities, Hefei University, Hefei, Anhui230601, China
| | - Jin Mao
- Key Laboratory of Biology and Genetic Improvement of Oil Crop, Key Laboratory of Oilseeds Processing, Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, Hubei430062, China
| | - Qianchun Deng
- Key Laboratory of Biology and Genetic Improvement of Oil Crop, Key Laboratory of Oilseeds Processing, Ministry of Agriculture and Rural Affairs, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan, Hubei430062, China
| | - Lei Zheng
- Engineering Research Center of Bio-process, Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui230009, China
| | - Jie Shi
- Engineering Research Center of Bio-process, Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui230009, China
| |
Collapse
|
4
|
Enhancing the Productivity and Stability of Superoxide Dismutase from Saccharomyces cerevisiae TBRC657 and Its Application as a Free Radical Scavenger. FERMENTATION-BASEL 2022. [DOI: 10.3390/fermentation8040169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Superoxide dismutase (SOD) is crucial antioxidant enzyme that plays a role in protecting cells against harmful reactive oxygen species (ROS) which are generated inside cells. Due to its functionality, SOD is used in many applications. In this study, Saccharomyces cerevisiae TBRC657 was selected as the SOD producer due to its high SOD production. After investigating an optimized medium, the major components were found to be molasses and yeast extract, which improved SOD production up to 3.97-fold compared to a synthetic medium. In addition, the optimized medium did not require any induction, which makes it suitable for applications in large-scale production. The SOD formulation was found to increase the stability of the conformational structure and prolong shelf-life. The results show that 1.0% (w/w) trehalose was the best additive, in giving the highest melting temperature by the DSF method and maintaining its activity at more than 80% after storage for 6 months. The obtained SOD was investigated for its cytotoxicity and ROS elimination against fibroblast cells. The results indicate that the SOD enhanced the proliferation and controlled ROS level inside the cells. Thus, the SOD obtained from S. cerevisiae TBRC657 cultured in the optimized medium could be a candidate for use as a ROS scavenger, which can be applied in many industries.
Collapse
|
5
|
Effects of metal ions on activity and structure of phenoloxidase in Penaeus vannamei. Int J Biol Macromol 2021; 174:207-215. [PMID: 33482212 DOI: 10.1016/j.ijbiomac.2021.01.112] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 01/10/2021] [Accepted: 01/17/2021] [Indexed: 11/24/2022]
Abstract
Phenoloxidase (PO) is a typical metal enzyme, which requires metal ions as prosthetic groups to enable the full exertion of its activity. To study how metal ions affected the activity and structure of PO enzymes, while providing reference materials for in-depth investigations, we examined the effects of different metal ions (Cu2+, Zn2+, Mg2+, Ca2+, and Ba2+) on their activities. Furthermore, Cu2+ and Mg2+ were selected for further investigation through UV spectra, intrinsic fluorescence spectroscopy, AFM, and FTIR. It was revealed that Cu2+ had a more obvious effect on PO compared to Mg2+. The PO could be activated when the concentrations of Cu2+ and Mg2+ were lower than 10-3 and 10-2 mol/L, respectively, and maximum PO activities (182.14% and 141.02%) were observed at 10-4 mol/L concentrations of Cu2+ and Mg2+. When the concentrations of Cu2+ and Mg2+ were higher than 10-2 and 10-1 mol/L, the activities PO were inhibited. The results of the UV-vis and fluorescence spectra revealed that Cu2+ shaped the tertiary structure of PO, whereas the effect of Mg2+ was slight. The AFM results demonstrated that high concentrations of Cu2+ and Mg2+ resulted in PO aggregation. FTIR analysis indicated that the total content of PO α-helices and β-sheets decreased with higher concentrations of Cu2+ and Mg2+.
Collapse
|
6
|
Lu J, Wang P, Ke Z, Liu X, Kang Q, Hao L. Effect of metal ions on the enzymatic hydrolysis of hemp seed oil by lipase Candida sp. 99–125. Int J Biol Macromol 2018; 114:922-928. [DOI: 10.1016/j.ijbiomac.2018.03.168] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 03/12/2018] [Accepted: 03/27/2018] [Indexed: 11/30/2022]
|
7
|
Allikalt A, Rinken A. Budded baculovirus particles as a source of membrane proteins for radioligand binding assay: The case of dopamine D 1 receptor. J Pharmacol Toxicol Methods 2017; 86:81-86. [DOI: 10.1016/j.vascn.2017.04.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 03/16/2017] [Accepted: 04/08/2017] [Indexed: 01/27/2023]
|
8
|
Cui C, Guan N, Xing C, Chen B, Tan T. Immobilization of Yarrowia lipolytica lipase Ylip2 for the biocatalytic synthesis of phytosterol ester in a water activity controlled reactor. Colloids Surf B Biointerfaces 2016; 146:490-7. [DOI: 10.1016/j.colsurfb.2016.05.083] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 04/26/2016] [Accepted: 05/28/2016] [Indexed: 11/25/2022]
|
9
|
Characterization of a Hyperthermostable Alkaline Lipase from Bacillus sonorensis 4R. Enzyme Res 2016; 2016:4170684. [PMID: 26904276 PMCID: PMC4745284 DOI: 10.1155/2016/4170684] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 12/14/2015] [Accepted: 12/22/2015] [Indexed: 01/17/2023] Open
Abstract
Hyperthermostable alkaline lipase from Bacillus sonorensis 4R was purified and characterized. The enzyme production was carried out at 80°C and 9.0 pH in glucose-tween inorganic salt broth under static conditions for 96 h. Lipase was purified by anion exchange chromatography by 12.15 fold with a yield of 1.98%. The molecular weight of lipase was found to be 21.87 KDa by SDS-PAGE. The enzyme activity was optimal at 80°C with t1/2 of 150 min and at 90°C, 100°C, 110°C, and 120°C; the respective values were 121.59 min, 90.01 min, 70.01 min, and 50 min. The enzyme was highly activated by Mg and t1/2 values at 80°C were increased from 150 min to 180 min when magnesium and mannitol were added in combination. The activation energy calculated from Arrhenius plot was 31.102 KJ/mol. At 80–120°C, values of ΔH and ΔG were in the range of 28.16–27.83 KJ/mol and 102.79 KJ/mol to 111.66 KJ/mol, respectively. Lipase activity was highest at 9.0 pH and stable for 2 hours at this pH at 80°C. Pretreatment of lipase with MgSO4 and CaSO4 stimulated enzyme activity by 249.94% and 30.2%, respectively. The enzyme activity was greatly reduced by CoCl2, CdCl2, HgCl2, CuCl2, Pb(NO3)2, PMSF, orlistat, oleic acid, iodine, EDTA, and urea.
Collapse
|
10
|
Li W, Shen H, Ma M, Liu L, Cui C, Chen B, Fan D, Tan T. Synthesis of ethyl oleate by esterification in a solvent-free system using lipase immobilized on PDMS-modified nonwoven viscose fabrics. Process Biochem 2015. [DOI: 10.1016/j.procbio.2015.07.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
11
|
Li W, Shen H, Tao Y, Chen B, Tan T. Amino silicones finished fabrics for lipase immobilization: Fabrics finishing and catalytic performance of immobilized lipase. Process Biochem 2014. [DOI: 10.1016/j.procbio.2014.05.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
12
|
Xu YP, Guan YH, Yu HL, Ni Y, Ma BD, Xu JH. Improved o-chlorobenzoylformate bioreduction by stabilizing aldo-keto reductase YtbE with additives. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2014.03.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
13
|
Brígida AI, Amaral PF, Coelho MA, Gonçalves LR. Lipase from Yarrowia lipolytica: Production, characterization and application as an industrial biocatalyst. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2013.11.016] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
14
|
Bankeeree W, Lotrakul P, Prasongsuk S, Chaiareekij S, Eveleigh DE, Kim SW, Punnapayak H. Effect of polyols on thermostability of xylanase from a tropical isolate of Aureobasidium pullulans and its application in prebleaching of rice straw pulp. SPRINGERPLUS 2014; 3:37. [PMID: 24478945 PMCID: PMC3901851 DOI: 10.1186/2193-1801-3-37] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Accepted: 01/14/2014] [Indexed: 11/10/2022]
Abstract
In an attempt to find a thermostable xylanase enzyme for potential application in the pretreatment prior to H2O2 bleaching of paper pulp for industry, an extracellular xylanase from Aureobasidium pullulans CBS 135684 was purified 17.3-fold to apparent homogeneity with a recovery yield of 13.7%. Its molecular mass was approximately 72 kDa as determined by SDS-PAGE. The optimal pH and temperature for activity of the purified enzyme were pH 6.0 and 70°C, respectively. The enzyme was relatively stable at 50°C, retaining more than half of its original activity after 3-h incubation. The thermostability of the enzyme was improved by the addition of 0.75 mM sorbitol prolonging the enzyme's activity up to 10-fold at 70°C. When the potential of using the enzyme in pretreatment of rice straw pulp prior to bleaching was evaluated, the greatest efficiency was obtained in a mixture containing xylanase and sorbitol. Treatment of the rice straw pulp with xylanase prior to treatment with 10% (v/v) H2O2 and production of hand sheets increased the ISO sheet brightness by 13.5% and increased the tensile and tear strengths of the pulp by up to 1.16 and 1.71-fold, respectively, compared with pulps treated with H2O2 alone. The results suggested the potential application of the enzyme before the bleaching process of paper pulp when the maintenance of high temperature and enzyme stability are desirable.
Collapse
Affiliation(s)
- Wichanee Bankeeree
- Biological Sciences Program, Faculty of Science, Chulalongkorn University, Chulalongkorn, Bangkok, 10330 Thailand ; Plant Biomass Utilization Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Chulalongkorn, Bangkok, 10330 Thailand
| | - Pongtharin Lotrakul
- Plant Biomass Utilization Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Chulalongkorn, Bangkok, 10330 Thailand
| | - Sehanat Prasongsuk
- Plant Biomass Utilization Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Chulalongkorn, Bangkok, 10330 Thailand
| | - Somporn Chaiareekij
- Department of Imaging and Printing Technology, Faculty of Science, Chulalongkorn University, Chulalongkorn, Bangkok, 10330 Thailand
| | - Douglas E Eveleigh
- Department of Biochemistry and Microbiology, School of Environmental and Biological Sciences, Rutgers University, Rutgers, NJ 08901-8525 USA
| | - Seung Wook Kim
- Department of Chemical and Biological Engineering, Korea University, Seoul, 136-701 Republic of Korea
| | - Hunsa Punnapayak
- Plant Biomass Utilization Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Chulalongkorn, Bangkok, 10330 Thailand
| |
Collapse
|
15
|
Tao Q, Li A, Liu X, Gao H, Zhang Z, Ma R, An Y, Shi L. Improved thermal stability of lipase in W/O microemulsion by temperature-sensitive polymers. Colloids Surf B Biointerfaces 2013; 111:587-93. [PMID: 23907047 DOI: 10.1016/j.colsurfb.2013.06.055] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2012] [Revised: 06/26/2013] [Accepted: 06/30/2013] [Indexed: 11/16/2022]
Abstract
Lipase is active at the water-oil interface and thus very useful for many applications in non-aqueous media. However, the use of lipase is often limited due to the heat inactivation which is mainly caused by the irreversible aggregation among lipase molecules. The temperature-sensitive polymers can spontaneously form complexes with lipases at higher temperature in the confined spaces of the water in oil microemulsion. With cooling, lipases are released from the complexes and refold into the native state. In this way, the thermal stability of lipase in a microemulsion is effectively improved, and so is the stability of lipase at ambient temperature. Apart from proving the effectiveness and generality of this method, the temperature-sensitive polymers/lipase microemulsion represents a simple and efficient system which could be used in practical applications, since lipase retains the interfacial activity in this system. Moreover, the influences of some factors on the improvement are discussed and the mechanism of this method is suggested after exploring the process by dynamic light scattering and fluorescence measurements.
Collapse
Affiliation(s)
- Qian Tao
- Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Ang Li
- Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xue Liu
- Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Hongjun Gao
- Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Zhenkun Zhang
- Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Rujiang Ma
- Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yingli An
- Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Linqi Shi
- Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China.
| |
Collapse
|
16
|
Improving the thermostability of lipase Lip2 from Yarrowia lipolytica. J Biotechnol 2013; 164:248-53. [DOI: 10.1016/j.jbiotec.2012.08.023] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2012] [Revised: 08/26/2012] [Accepted: 08/30/2012] [Indexed: 11/23/2022]
|
17
|
Lu J, Deng L, Nie K, Wang F, Tan T. Stability of ImmobilizedCandidasp. 99-125 Lipase for Biodiesel Production. Chem Eng Technol 2012. [DOI: 10.1002/ceat.201200254] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
18
|
Liu W, Chen B, Wang F, Tan T, Deng L. Lipase-catalyzed synthesis of aliphatic polyesters and properties characterization. Process Biochem 2011. [DOI: 10.1016/j.procbio.2011.07.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
19
|
Li C, Wang L, Jiang Y, Hu M, Li S, Zhai Q. Activity and Stability of Chloroperoxidase in the Presence of Small Quantities of Polysaccharides: A Catalytically Favorable Conformation Was Induced. Appl Biochem Biotechnol 2011; 165:1691-707. [DOI: 10.1007/s12010-011-9388-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Accepted: 09/12/2011] [Indexed: 11/29/2022]
|