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Vesoloski JF, Todero AS, Macieski RJ, de Oliveira Pereira F, Dallago RM, Mignoni ML. Immobilization of Lipase from Candida antarctica B (CALB) by Sol-Gel Technique Using Rice Husk Ash as Silic Source and Ionic Liquid as Additive. Appl Biochem Biotechnol 2022; 194:6270-6286. [PMID: 35907063 DOI: 10.1007/s12010-022-04096-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/15/2022] [Indexed: 11/27/2022]
Abstract
This work presents the immobilization in situ of commercial lipase from Candida antarctica B (CALB) by the sol-gel technique (xerogel) using silica from rice husk ash (RHA) as a source of silicon. It was used the Ionic Liquid (IL) 1-octyl-3-methylimidazolium bromide (C8MI.Br) as additive. The immobilized derivatives were characterized per SEM, XRD, and per method BET. The enzymatic activity of xerogels was evaluated with different tests, these being the reactional thermal analysis, immobilization yield, and operational and storage stability. The XDR showed that the obtained xerogels have halos in the region between 15 and 35° (2θ) what characterizes it as amorphous materials. The SEM analysis of xerogel shows irregular particles with dimensions less than 20 μm. The immobilized presented an esterification activity (EA) with 263.2 and 213.8 U/g, with and without IL, respectively, higher than the free enzyme (169.6 U/g). The immobilized, with and without IL, presented a significant improvement in the activity performance in relation to free enzyme for the three reactional temperatures (40, 60, and 80 °C) evaluated. The operational stability demonstrated that is possible to use xerogel without ionic liquid for 17 recycles and 21 recycles in IL presence. This methodology allows the preparation of new highly active and selective enzyme catalysts using the rice husk ash as a source of silicon, and the ionic liquid [C8MI]Br as additive. Furthermore, the new materials can provide greater viability in the processes, ensuring longer catalyst life.
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Affiliation(s)
- Josieli Fátima Vesoloski
- Department of Food and Chemical Engineering, URI - Erechim, Sete de Setembro Av, Erechim, RS, 162199709-910, Brazil
| | - Adriele Sabrina Todero
- Department of Food and Chemical Engineering, URI - Erechim, Sete de Setembro Av, Erechim, RS, 162199709-910, Brazil
| | - Ricardo Jorge Macieski
- Department of Food and Chemical Engineering, URI - Erechim, Sete de Setembro Av, Erechim, RS, 162199709-910, Brazil
| | - Fabiana de Oliveira Pereira
- Department of Food and Chemical Engineering, URI - Erechim, Sete de Setembro Av, Erechim, RS, 162199709-910, Brazil
| | - Rogério Marcos Dallago
- Department of Food and Chemical Engineering, URI - Erechim, Sete de Setembro Av, Erechim, RS, 162199709-910, Brazil
| | - Marcelo Luis Mignoni
- Department of Food and Chemical Engineering, URI - Erechim, Sete de Setembro Av, Erechim, RS, 162199709-910, Brazil.
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Vassiliadi E, Mitsou E, Avramiotis S, Chochos CL, Pirolt F, Medebach M, Glatter O, Xenakis A, Zoumpanioti M. Structural Study of (Hydroxypropyl)Methyl Cellulose Microemulsion-Based Gels Used for Biocompatible Encapsulations. NANOMATERIALS 2020; 10:nano10112204. [PMID: 33167302 PMCID: PMC7694351 DOI: 10.3390/nano10112204] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/27/2020] [Accepted: 10/30/2020] [Indexed: 02/05/2023]
Abstract
(Hydroxypropyl)methyl cellulose (HPMC) can be used to form gels integrating a w/o microemulsion. The formulation in which a microemulsion is mixed with a hydrated HPMC matrix has been successfully used as a carrier of biocompatible ingredients. However, little is known about the structure of these systems. To elucidate this, scanning electron microscopy was used to examine the morphology and the bulk of the microemulsion-based gels (MBGs) and small-angle X-ray scattering to clarify the structure and detect any residual reverse micelles after microemulsion incorporation in the gel. Electron paramagnetic resonance spectroscopy was applied using spin probes to investigate the polar and non-polar areas of the gel. Furthermore, the enzyme-labelling technique was followed to investigate the location of an enzyme in the matrix. A structural model for HPMC matrix is proposed according to which, although a w/o microemulsion is essential to form the final gel, no microemulsion droplets can be detected after incorporation in the gel. Channels are formed by the organic solvent (oil), which are coated by surfactant molecules and a water layer in which the enzyme can be hosted.
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Affiliation(s)
- Evdokia Vassiliadi
- Institute of Chemical Biology, National Hellenic Research Foundation, 48, Vassileos Constantinou Ave., 11635 Athens, Greece; (E.V.); (E.M.); (S.A.); (C.L.C.); (A.X.)
- Laboratory of Biotechnology, Department of Biological Applications and Technologies, University of Ioannina, 45110 Ioannina, Greece
| | - Evgenia Mitsou
- Institute of Chemical Biology, National Hellenic Research Foundation, 48, Vassileos Constantinou Ave., 11635 Athens, Greece; (E.V.); (E.M.); (S.A.); (C.L.C.); (A.X.)
| | - Spyridon Avramiotis
- Institute of Chemical Biology, National Hellenic Research Foundation, 48, Vassileos Constantinou Ave., 11635 Athens, Greece; (E.V.); (E.M.); (S.A.); (C.L.C.); (A.X.)
| | - Christos L. Chochos
- Institute of Chemical Biology, National Hellenic Research Foundation, 48, Vassileos Constantinou Ave., 11635 Athens, Greece; (E.V.); (E.M.); (S.A.); (C.L.C.); (A.X.)
| | - Franz Pirolt
- Anton Paar GmbH, Anton Paar Straße 20, 8054 Graz, Austria; (F.P.); (M.M.)
| | - Martin Medebach
- Anton Paar GmbH, Anton Paar Straße 20, 8054 Graz, Austria; (F.P.); (M.M.)
| | - Otto Glatter
- Institute of Inorganic Chemistry, Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria;
| | - Aristotelis Xenakis
- Institute of Chemical Biology, National Hellenic Research Foundation, 48, Vassileos Constantinou Ave., 11635 Athens, Greece; (E.V.); (E.M.); (S.A.); (C.L.C.); (A.X.)
| | - Maria Zoumpanioti
- Institute of Chemical Biology, National Hellenic Research Foundation, 48, Vassileos Constantinou Ave., 11635 Athens, Greece; (E.V.); (E.M.); (S.A.); (C.L.C.); (A.X.)
- Correspondence: ; Tel.: +30-210-727-3796
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Xing X, Jia JQ, Zhang JF, Zhou ZW, Li J, Wang N, Yu XQ. CALB Immobilized onto Magnetic Nanoparticles for Efficient Kinetic Resolution of Racemic Secondary Alcohols: Long-Term Stability and Reusability. Molecules 2019; 24:molecules24030490. [PMID: 30704049 PMCID: PMC6384578 DOI: 10.3390/molecules24030490] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 01/17/2019] [Accepted: 01/24/2019] [Indexed: 11/16/2022] Open
Abstract
In this study, an immobilization strategy for magnetic cross-linking enzyme aggregates of lipase B from Candida antarctica (CALB) was developed and investigated. Magnetic particles were prepared by conventional co-precipitation. The magnetic nanoparticles were modified with 3-aminopropyltriethoxysilane (APTES) to obtain surface amino-functionalized magnetic nanoparticles (APTES⁻Fe₃O₄) as immobilization materials. Glutaraldehyde was used as a crosslinker to covalently bind CALB to APTES⁻Fe₃O₄. The optimal conditions of immobilization of lipase and resolution of racemic 1-phenylethanol were investigated. Under optimal conditions, esters could be obtained with conversion of 50%, enantiomeric excess of product (eep) > 99%, enantiomeric excess of substrate (ees) > 99%, and enantiomeric ratio (E) > 1000. The magnetic CALB CLEAs were successfully used for enzymatic kinetic resolution of fifteen secondary alcohols. Compared with Novozym 435, the magnetic CALB CLEAs exhibited a better enantioselectivity for most substrates. The conversion was still greater than 49% after the magnetic CALB CLEAs had been reused 10 times in a 48 h reaction cycle; both ees and eep were close to 99%. Furthermore, there was little decrease in catalytic activity and enantioselectivity after being stored at -20 °C for 90 days.
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Affiliation(s)
- Xiu Xing
- Key Laboratory of Green Chemistry Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Jun-Qi Jia
- Key Laboratory of Green Chemistry Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Jing-Fan Zhang
- Key Laboratory of Green Chemistry Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Zi-Wen Zhou
- Key Laboratory of Green Chemistry Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Jun Li
- Key Laboratory of Green Chemistry Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Na Wang
- Key Laboratory of Green Chemistry Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Xiao-Qi Yu
- Key Laboratory of Green Chemistry Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
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Esposito CL, Kirilov P, Roullin VG. Organogels, promising drug delivery systems: an update of state-of-the-art and recent applications. J Control Release 2018; 271:1-20. [DOI: 10.1016/j.jconrel.2017.12.019] [Citation(s) in RCA: 117] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 12/15/2017] [Accepted: 12/17/2017] [Indexed: 12/23/2022]
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Dutta N, Saha MK. Immobilization of a Mesophilic Lipase on Graphene Oxide: Stability, Activity, and Reusability Insights. Methods Enzymol 2018; 609:247-272. [DOI: 10.1016/bs.mie.2018.05.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Zhang W, Yang H, Liu W, Wang N, Yu X. Improved Performance of Magnetic Cross-Linked Lipase Aggregates by Interfacial Activation: A Robust and Magnetically Recyclable Biocatalyst for Transesterification of Jatropha Oil. Molecules 2017; 22:molecules22122157. [PMID: 29215562 PMCID: PMC6150005 DOI: 10.3390/molecules22122157] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Revised: 11/28/2017] [Accepted: 12/02/2017] [Indexed: 11/16/2022] Open
Abstract
Lipases are the most widely employed enzymes in commercial industries. The catalytic mechanism of most lipases involves a step called "interfacial activation". As interfacial activation can lead to a significant increase in catalytic activity, it is of profound importance in developing lipase immobilization methods. To obtain a potential biocatalyst for industrial biodiesel production, an effective strategy for enhancement of catalytic activity and stability of immobilized lipase was developed. This was performed through the combination of interfacial activation with hybrid magnetic cross-linked lipase aggregates. This biocatalyst was investigated for the immobilization of lipase from Rhizomucor miehei (RML). Under the optimal conditions, the activity recovery of the surfactant-activated magnetic RML cross-linked enzyme aggregates (CLEAs) was as high as 2058%, with a 20-fold improvement over the free RML. Moreover, the immobilized RML showed excellent catalytic performance for the biodiesel reaction at a yield of 93%, and more importantly, could be easily separated from the reaction mixture by simple magnetic decantation, and retained more than 84% of its initial activities after five instances of reuse. This study provides a new and versatile approach for designing and fabricating immobilized lipase with high activation and stability.
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Affiliation(s)
- Weiwei Zhang
- School of Chemistry and Chemical Engineering, National Demonstration Center for Experimental Chemistry Education, Ningxia University, Yinchuan 750021, China.
| | - Huixia Yang
- School of Chemistry and Chemical Engineering, National Demonstration Center for Experimental Chemistry Education, Ningxia University, Yinchuan 750021, China.
| | - Wanyi Liu
- School of Chemistry and Chemical Engineering, National Demonstration Center for Experimental Chemistry Education, Ningxia University, Yinchuan 750021, China.
| | - Na Wang
- Key Laboratory of Green Chemistry Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
| | - Xiaoqi Yu
- Key Laboratory of Green Chemistry Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
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Thyparambil AA, Wei Y, Latour RA. Evaluation of the Effectiveness of Surfactants and Denaturants to Elute and Denature Adsorbed Protein on Different Surface Chemistries. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:11814-11824. [PMID: 26449787 DOI: 10.1021/acs.langmuir.5b02741] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The elution and/or denaturation of proteins from material surfaces by chemical excipients such as surfactants and denaturants is important for numerous applications including medical implant reprocessing, bioanalyses, and biodefense. The objective of this study was to develop and apply methods to quantitatively assess how surface chemistry and adsorption conditions influence the effectiveness of three commonly used surfactants (sodium dodecyl sulfate, n-octyl-β-d-glucoside, and 3-[(3-cholamidopropyl)dimethylammonio]-1-propanesulfonate) and two denaturants (guanidium hydrochloride and urea) to elute protein (hen egg white lysozyme and bovine pancreatic ribonuclease A) from three different surface chemistries (silica glass, poly(methyl methacrylate), and high-density polyethylene). The structure and bioactivity of residual protein on the surface following elution were characterized using circular dichroism spectropolarimetry and enzyme assays to assess the extent of protein denaturation. Our results indicate that the denaturants were generally more effective than the surfactants in removing the adsorbed proteins from each type of surface. Also, the denaturing capacity of these excipients on the residual proteins on the surfaces was distinctly different from their influence on the proteins in solution and was unique for each of the adsorption conditions. Taken altogether, these results reveal that the effectiveness of surfactants and denaturants to elute and denature adsorbed protein is significantly influenced by surface chemistry and the conditions from which the protein was adsorbed. These results provide a basis for the selection, design, and further development of chemical agents for protein elution and surface decontamination.
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Affiliation(s)
- Aby A Thyparambil
- Department of Bioengineering, 501 Rhodes Engineering Research Center, Clemson University , Clemson, South Carolina 29634, United States
| | - Yang Wei
- Department of Bioengineering, 501 Rhodes Engineering Research Center, Clemson University , Clemson, South Carolina 29634, United States
| | - Robert A Latour
- Department of Bioengineering, 501 Rhodes Engineering Research Center, Clemson University , Clemson, South Carolina 29634, United States
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