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Małycha K, Burakowski A, Gliński J, Niu H, Bai SL, Orzechowski K. Characterization of isooctane/AOT/water reverse micelles by dielectric spectroscopy, dynamic light scattering and acoustic methods. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Liu Y, Kuang P, Guo S, Sun Q, Xue T, Li H. An overview of recent progress in solvent systems, additives and modifiers of counter current chromatography. NEW J CHEM 2018. [DOI: 10.1039/c7nj04747a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Solvent systems are critical to counter current chromatography (CCC). Appropriate additives and modifiers can be used to improve the separation efficiency of CCC.
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Affiliation(s)
- Yanjuan Liu
- School of Pharmacy
- Linyi University
- Shuangling Road
- Linyi 276000
- P. R. China
| | - Pengqun Kuang
- School of Pharmacy
- Linyi University
- Shuangling Road
- Linyi 276000
- P. R. China
| | - Shaofen Guo
- School of Pharmacy
- Linyi University
- Shuangling Road
- Linyi 276000
- P. R. China
| | - Qing Sun
- School of Pharmacy
- Linyi University
- Shuangling Road
- Linyi 276000
- P. R. China
| | - Tao Xue
- School of Pharmacy
- Linyi University
- Shuangling Road
- Linyi 276000
- P. R. China
| | - Haigang Li
- School of Pharmacy
- Linyi University
- Shuangling Road
- Linyi 276000
- P. R. China
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Gonçalves KM, Junior II, Papadimitriou V, Zoumpanioti M, Leal ICR, de Souza ROMA, Cordeiro Y, Xenakis A. Nanoencapsulated Lecitase Ultra and Thermomyces lanuginosus Lipase, a Comparative Structural Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:6746-6756. [PMID: 27291999 DOI: 10.1021/acs.langmuir.6b00826] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Two commercially available and widely used enzymes, the parent Thermomyces lanuginosus lipase (TLL) and the shuffled phospholipase A1 Lecitase (Lecitase Ultra), were encapsulated in AOT/isooctane reverse micelles and evaluated regarding their structure and activity. Preparations were also tested as effective biocatalysts. Small-angle X-ray scattering (SAXS), electronic paramagnetic resonance (EPR), and fluorescence spectroscopy were the techniques applied to assess the effects of enzyme incorporation to a reverse micellar nanostructure. SAXS analysis showed that the radius of gyration (Rg) changed from 16 to 38 Å, as the water content (w0) increased. Elongated shapes were more commonly observed than spherical shapes after enzyme encapsulation. EPR studies indicated that enzymes do not participate in the interface, being located in the aqueous center. Fluorescence energy transfer showed that TLL is located in the water core, whereas Lecitase Ultra is closer to the interface. Enzymatic activity toward a standard esterification reaction endured after the enzyme was incorporated into the micelles. The activity of TLL for systems with w0 15 showed the highest conversion yield, 38% in 2 h, while the system with w0 10 showed the highest initial velocity, 0.43 μM/min. This last system had a Rg of 19.3 Å, similar to that of the TLL monomer. Lecitase Ultra showed the highest conversion yields in systems with w0 10, 55% in 2 h. However, the initial rate was much lower than that of TLL, suggesting less affinity for the substrates, which is expected since Lecitase Ultra is a phospholipase. In summary, we here used several spectroscopic and scattering techniques to reveal the shape and stability of TTL and Lecitase Ultra encapsulated systems, which allowed the selection of w0 values to provide optimized enzymatic activity.
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Affiliation(s)
- Karen M Gonçalves
- Faculty of Pharmacy, Federal University of Rio de Janeiro , Rio de Janeiro 21941-902, Brazil
| | - Ivaldo I Junior
- Biocatalysis and Organic Synthesis Group, Chemistry Institute, Federal University of Rio de Janeiro , Rio de Janeiro 21941-909, Brazil
- Department of Biochemical Engineering, School of Chemistry, Federal University of Rio de Janeiro , Rio de Janeiro 21941-909, Brazil
| | - Vassiliki Papadimitriou
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation , Athens 116 35, Greece
| | - Maria Zoumpanioti
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation , Athens 116 35, Greece
| | - Ivana C R Leal
- Faculty of Pharmacy, Federal University of Rio de Janeiro , Rio de Janeiro 21941-902, Brazil
| | - Rodrigo O M A de Souza
- Biocatalysis and Organic Synthesis Group, Chemistry Institute, Federal University of Rio de Janeiro , Rio de Janeiro 21941-909, Brazil
| | - Yraima Cordeiro
- Faculty of Pharmacy, Federal University of Rio de Janeiro , Rio de Janeiro 21941-902, Brazil
| | - Aristotelis Xenakis
- Institute of Biology, Medicinal Chemistry and Biotechnology, National Hellenic Research Foundation , Athens 116 35, Greece
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Zhang WW, Jia JQ, Wang N, Hu CL, Yang SY, Yu XQ. Improved activity of lipase immobilized in microemulsion-based organogels for ( R, S)-ketoprofen ester resolution: Long-term stability and reusability. ACTA ACUST UNITED AC 2015. [PMID: 28626708 PMCID: PMC5466060 DOI: 10.1016/j.btre.2015.04.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Microemulsion-based organogels (MBGs) were effectively employed for the immobilization of four commonly used lipases. During the asymmetric hydrolysis of ketoprofen vinyl ester at 30 °C for 24 h, lipase from Rhizomucor miehei and Mucor javanicus immobilized in microemulsion-based organogels (RML MBGs and MJL MBGs) maintained good enantioselectivities (eep were 86.2% and 99.2%, respectively), and their activities increased 12.8-fold and 7.8-fold, respectively, compared with their free forms. They gave higher yields compared with other lipase MBGs and exhibited better enantioselectivity than commercial immobilized lipases. Immobilization considerably increased the tolerance to organic solvents and high temperature. Both MJL MBGs and RML MBGs showed excellent reusability during 30 cycles of repeated 24 h reactions at 30 °C (over 40 days). The system maintained yields of greater than 50%, while the ees values of RML MBGs and MJL MBGs remained nearly constant at 95% and 88%, respectively.
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Affiliation(s)
- Wei-Wei Zhang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China
| | - Jun-Qi Jia
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China
| | - Na Wang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China
| | - Cheng-Li Hu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China
| | - Sheng-Yong Yang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu 610064, PR China
| | - Xiao-Qi Yu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China
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Ma YJ, Yuan XZ, Xin-Peng, Hou-Wang, Huang HJ, Shan-Bao, Huan-Liu, Xiao ZH, Zeng GM. The pseudo-ternary phase diagrams and properties of anionic–nonionic mixed surfactant reverse micellar systems. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2014.12.043] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Ye P, Xu YJ, Han ZP, Hu PC, Zhao ZL, Lu XL, Ni HG. Probing effects of bile salt on lipase adsorption at air/solution interface by sum frequency generation vibrational spectroscopy. Biochem Eng J 2013. [DOI: 10.1016/j.bej.2013.07.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Moyano F, Setien E, Silber JJ, Correa NM. Enzymatic hydrolysis of N-benzoyl-L-tyrosine p-nitroanilide by α-chymotrypsin in DMSO-water/AOT/n-heptane reverse micelles. A unique interfacial effect on the enzymatic activity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:8245-8254. [PMID: 23734596 DOI: 10.1021/la401103q] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The reverse micelle (RM) media are very good as nanoreactors because they can create a unique microenvironment for carrying out a variety of chemical and biochemical reactions. The aim of the present work is to determine the influence of different water-dimethyl sulfoxide (DMSO) mixtures encapsulated in 1,4-bis-2-ethylhexylsulfosuccinate (AOT)/n-heptane RMs on the enzymatic hydrolysis of N-benzoyl-L-tyrosine p-nitroanilide (Bz-Try-pNA) by α-chymotrypsin (α-CT). The reaction was first studied in homogeneous media at different DMSO-water mixture compositions and in DMSO-water/AOT/n-heptane RMs. The hydrolysis rates of Bz-Try-pNA catalyzed by α-CT were determined by UV-vis spectroscopy. The reaction follows the Michaelis-Menten mechanism and the kinetic parameters: kcat, KM, and kcat/KM were evaluated under different conditions. In this homogeneous media, DMSO plays an important role in the solubilization process of the peptide which is almost insoluble in water, but it has a tremendous impact on the inactivation of α-CT. It is shown that the enzyme dissolved in a 20% molar ratio of the DMSO-water mixture does not present enzymatic activity. Dynamic light scattering has been used to assess the formation of DMSO-water/AOT/heptane RMs at different DMSO compositions. The results also show that there is preferential solvation of the AOT RM interface by water molecules. To test the use of these RMs as nanoreactors, the kinetic parameters for the enzymatic reaction in these systems have been evaluated. The parameters were determined at fixed W(S) {W(S) = ([water] + [DMSO])/[AOT] = 20} at different DMSO-water compositions. The results show that the Michaelis-Menten mechanism is valid for α-CT in all the RM systems studied and that the reaction takes place at the RM interface. Surprisingly, it was observed that the enzyme encapsulated by the RMs show catalytic effects with similar kcat/KM values at any DMSO composition investigated, which evidence that DMSO molecules are localized far from the RM interface.
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Affiliation(s)
- Fernando Moyano
- Departamento de Química, Universidad Nacional de Río Cuarto, Agencia Postal # 3. C.P. X5804BYA Río Cuarto, Argentina
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Gaikaiwari RP, Wagh SA, Kulkarni BD. Efficient lipase purification using reverse micellar extraction. BIORESOURCE TECHNOLOGY 2012; 108:224-230. [PMID: 22230773 DOI: 10.1016/j.biortech.2011.11.126] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Revised: 11/26/2011] [Accepted: 11/29/2011] [Indexed: 05/31/2023]
Abstract
Reverse micellar extraction (RME) of enzyme provides an attractive option for conventional method with the potential to achieve purification and concentration in a single step with high yield. This study presents a methodology for optimization of RME with Pseudomonas lipase as model system. Fold-purification, percent recovery and extraction time were the objective functions while the type and concentration of surfactant, contact time, pH, ionic strength, and the ratio of organic to aqueous phase were the decision variables. Under optimized conditions, the AOT (Aerosol OT (bis 2-ethylhexyl) sodium sulfosuccinate)-isooctane system gave a 15-fold purification, 80% recovery and 2.5-fold concentration of the Pseudomonas lipase with process time of 45 min.
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Affiliation(s)
- Raghavendra P Gaikaiwari
- Hi Tech Biosciences India Ltd., C 2, 102-103 Saudamini Complex, Paud Road, Pune 411038, MS, India.
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Yin L, Sun C, Han X, Xu L, Xu Y, Qi Y, Peng J. Preparative purification of bromelain (EC 3.4.22.33) from pineapple fruit by high-speed counter-current chromatography using a reverse-micelle solvent system. Food Chem 2011; 129:925-32. [DOI: 10.1016/j.foodchem.2011.05.048] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Revised: 05/05/2011] [Accepted: 05/09/2011] [Indexed: 12/21/2022]
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Xue L, Qiu H, Li Y, Lu L, Huang X, Qu Y. A novel water-in-ionic liquid microemulsion and its interfacial effect on the activity of laccase. Colloids Surf B Biointerfaces 2010; 82:432-7. [PMID: 20951007 DOI: 10.1016/j.colsurfb.2010.09.016] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2010] [Revised: 09/12/2010] [Accepted: 09/20/2010] [Indexed: 11/18/2022]
Abstract
It is of great significance to develop an appropriate water-in-ionic liquid (W/IL) microemulsion suitable for the expression of the catalytic activity of a given enzyme. In this paper, the phase diagram of a new AOT/Triton X-100/H(2)O/[Bmim][PF(6)] pseudo ternary system is presented. With the aid of nonionic surfactant Triton X-100, AOT could be dissolved in hydrophobic ionic liquid [Bmim][PF(6)], forming a large single phase microemulsion region. The water-in-[Bmim][PF(6)] (W/IL) microemulsion domain was identified electrochemically by using K(3)Fe(CN)(6) as a probe. The existence of W/IL microemulsions was demonstrated spectrophotometrically by using CoCl(2) as a probe. New evidences from the FTIR spectroscopic study, which was first introduced to the W/IL microemulsion by substituting D(2)O for H(2)O to eliminate the spectral interference, demonstrated that there existed bulk water at larger ω(0) values (ω(0) was defined as the molar ratio of water to the total surfactant) in the W/IL microemulsion, which had remained unclear before. In addition to the inorganic salts, biomacromolecule laccase could be solubilized in the W/IL microemulsion. The laccase hosted in the microemulsion exhibited a catalytic activity and the activity could be regulated by the composition of the interfacial membrane.
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Affiliation(s)
- Luyan Xue
- Key Laboratory of Colloid & Interface Chemistry of the Education Ministry of China, Shandong University, Jinan 250100, PR China
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Bitencourt TB, Nascimento MDG. The influence of organic solvent and ionic liquids on the selective formation of 2-(2-ethylhexyl)-3-phenyl-1,2-oxaziridine mediated by lipases. J PHYS ORG CHEM 2010. [DOI: 10.1002/poc.1778] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Moniruzzaman M, Nakashima K, Kamiya N, Goto M. Recent advances of enzymatic reactions in ionic liquids. Biochem Eng J 2010. [DOI: 10.1016/j.bej.2009.10.002] [Citation(s) in RCA: 376] [Impact Index Per Article: 26.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Pavlidis IV, Gournis D, Papadopoulos GK, Stamatis H. Lipases in water-in-ionic liquid microemulsions: Structural and activity studies. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.molcatb.2009.03.007] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Zhang Y, Huang XR, Huang F, Li YZ, Qu YB, Gao PJ. Catalytic performance of lignin peroxidase in a novel reverse micelle. Colloids Surf B Biointerfaces 2008; 65:50-3. [DOI: 10.1016/j.colsurfb.2008.02.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2008] [Revised: 02/21/2008] [Accepted: 02/21/2008] [Indexed: 10/22/2022]
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Zhou GP, Zhang Y, Huang XR, Shi CH, Liu WF, Li YZ, Qu YB, Gao PJ. Catalytic activities of fungal oxidases in hydrophobic ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate-based microemulsion. Colloids Surf B Biointerfaces 2008; 66:146-9. [PMID: 18602799 DOI: 10.1016/j.colsurfb.2008.05.016] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2008] [Revised: 05/19/2008] [Accepted: 05/19/2008] [Indexed: 11/17/2022]
Abstract
For hydrophobic ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF(6)]), an H(2)O-in-[BMIM][PF(6)] microemulsion could be formed in the presence of nonionic surfactant Triton X-100 (TX-100). In such a medium, both lignin peroxidase (LiP) and laccase could express their catalytic activity with the optimum molar ratio of H(2)O to TX-100 at 8.0 for LiP and >20 for laccase, and the optimum pH values at 3.2 for LiP and 4.2 for laccase, respectively. As compared with pure or water saturated [BMIM][PF(6)], in which the two oxidases had negligible catalytic activity due to the strong inactivating effect of [BMIM][PF(6)] on both enzymes, the use of the [BMIM][PF(6)]-based microemulsion had some advantages. Not only the catalytic activities of both fungal oxidases greatly enhanced, but also the apparent viscosity of the medium decreased.
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Affiliation(s)
- Gui-Ping Zhou
- Key Laboratory of Colloid & Interface Chemistry of the Education Ministry of China, Shandong University, Jinan 250100, People's Republic of China
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