Hydrophobic adsorption and covalent immobilization of Candida antarctica lipase B on mixed-function-grafted silica gel supports for continuous-flow biotransformations
Adsorption onto solid supports has proven to be an easy and effective way to improve the mechanical and catalytic properties of lipases. Covalent binding of lipases onto the support surface enhances the active lifetime of the immobilized biocatalysts. Our study indicates that mesoporous silica gels...
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ftmtak:oai:real.mtak.hu:7271 2024-06-09T07:40:05+00:00 Hydrophobic adsorption and covalent immobilization of Candida antarctica lipase B on mixed-function-grafted silica gel supports for continuous-flow biotransformations Boros, Zoltán Weiser, Diána Márkus, Mária Kovács, Péter Poppe, László Abaháziová, Emese Tomin, Anna Koczkac, Béla Magyar, Ágnes 2013 text https://real.mtak.hu/7271/ https://real.mtak.hu/7271/1/Process%20Biochemistry_2013-F.pdf https://doi.org/10.1016/j.procbio.2013.05.002 en eng Elsevier https://real.mtak.hu/7271/1/Process%20Biochemistry_2013-F.pdf Boros, Zoltán and Weiser, Diána and Márkus, Mária and Kovács, Péter and Poppe, László and Abaháziová, Emese and Tomin, Anna and Koczkac, Béla and Magyar, Ágnes (2013) Hydrophobic adsorption and covalent immobilization of Candida antarctica lipase B on mixed-function-grafted silica gel supports for continuous-flow biotransformations. PROCESS BIOCHEMISTRY, 48 (7). pp. 1039-1047. ISSN 1359-5113 QD Chemistry / kémia Article PeerReviewed info:eu-repo/semantics/article 2013 ftmtak https://doi.org/10.1016/j.procbio.2013.05.002 2024-05-15T13:44:04Z Adsorption onto solid supports has proven to be an easy and effective way to improve the mechanical and catalytic properties of lipases. Covalent binding of lipases onto the support surface enhances the active lifetime of the immobilized biocatalysts. Our study indicates that mesoporous silica gels grafted with various functions are ideal supports for both adsorptive and covalent binding for lipase B from Candida antarctica (CaLB). Adsorption of CaLB on phenyl-functionalized silica gels improved in particular its specific activity, whereas adsorption on aminoalkyl-modified silica gels enabling covalent binding with the proper reagents resulted in only moderate specific activity. In addition, adsorption on silica gels modified by mixtures of phenyl- and aminoalkyl silanes significantly increased the productivity of CaLB. Furthermore, CaLB adsorbed onto a phenyl/aminoalkyl-modified surface and then treated with glutardialdehyde (GDA) as cross-linking agent provided a biocatalyst of enhanced durability. Adsorbed and cross-linked CaLB was resistant to detergent washing that would otherwise physically deactivate adsorbed CaLB preparations. The catalytic properties of our best immobilized CaLB variants, including temperature-dependent behavior were compared between 0 and 70 C with those of two commercial CaLB biocatalysts in the continuous-flow kinetic resolutions of racemic 1-phenylethanol rac-1a and 1-phenylethanamine rac-1b. © 2013 Elsevier Ltd. Article in Journal/Newspaper Antarc* Antarctica MTAK: REAL (Library and Information Centre of the Hungarian Academy of Sciences Process Biochemistry 48 7 1039 1047 |
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MTAK: REAL (Library and Information Centre of the Hungarian Academy of Sciences |
op_collection_id |
ftmtak |
language |
English |
topic |
QD Chemistry / kémia |
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QD Chemistry / kémia Boros, Zoltán Weiser, Diána Márkus, Mária Kovács, Péter Poppe, László Abaháziová, Emese Tomin, Anna Koczkac, Béla Magyar, Ágnes Hydrophobic adsorption and covalent immobilization of Candida antarctica lipase B on mixed-function-grafted silica gel supports for continuous-flow biotransformations |
topic_facet |
QD Chemistry / kémia |
description |
Adsorption onto solid supports has proven to be an easy and effective way to improve the mechanical and catalytic properties of lipases. Covalent binding of lipases onto the support surface enhances the active lifetime of the immobilized biocatalysts. Our study indicates that mesoporous silica gels grafted with various functions are ideal supports for both adsorptive and covalent binding for lipase B from Candida antarctica (CaLB). Adsorption of CaLB on phenyl-functionalized silica gels improved in particular its specific activity, whereas adsorption on aminoalkyl-modified silica gels enabling covalent binding with the proper reagents resulted in only moderate specific activity. In addition, adsorption on silica gels modified by mixtures of phenyl- and aminoalkyl silanes significantly increased the productivity of CaLB. Furthermore, CaLB adsorbed onto a phenyl/aminoalkyl-modified surface and then treated with glutardialdehyde (GDA) as cross-linking agent provided a biocatalyst of enhanced durability. Adsorbed and cross-linked CaLB was resistant to detergent washing that would otherwise physically deactivate adsorbed CaLB preparations. The catalytic properties of our best immobilized CaLB variants, including temperature-dependent behavior were compared between 0 and 70 C with those of two commercial CaLB biocatalysts in the continuous-flow kinetic resolutions of racemic 1-phenylethanol rac-1a and 1-phenylethanamine rac-1b. © 2013 Elsevier Ltd. |
format |
Article in Journal/Newspaper |
author |
Boros, Zoltán Weiser, Diána Márkus, Mária Kovács, Péter Poppe, László Abaháziová, Emese Tomin, Anna Koczkac, Béla Magyar, Ágnes |
author_facet |
Boros, Zoltán Weiser, Diána Márkus, Mária Kovács, Péter Poppe, László Abaháziová, Emese Tomin, Anna Koczkac, Béla Magyar, Ágnes |
author_sort |
Boros, Zoltán |
title |
Hydrophobic adsorption and covalent immobilization of Candida antarctica lipase B on mixed-function-grafted silica gel supports for continuous-flow biotransformations |
title_short |
Hydrophobic adsorption and covalent immobilization of Candida antarctica lipase B on mixed-function-grafted silica gel supports for continuous-flow biotransformations |
title_full |
Hydrophobic adsorption and covalent immobilization of Candida antarctica lipase B on mixed-function-grafted silica gel supports for continuous-flow biotransformations |
title_fullStr |
Hydrophobic adsorption and covalent immobilization of Candida antarctica lipase B on mixed-function-grafted silica gel supports for continuous-flow biotransformations |
title_full_unstemmed |
Hydrophobic adsorption and covalent immobilization of Candida antarctica lipase B on mixed-function-grafted silica gel supports for continuous-flow biotransformations |
title_sort |
hydrophobic adsorption and covalent immobilization of candida antarctica lipase b on mixed-function-grafted silica gel supports for continuous-flow biotransformations |
publisher |
Elsevier |
publishDate |
2013 |
url |
https://real.mtak.hu/7271/ https://real.mtak.hu/7271/1/Process%20Biochemistry_2013-F.pdf https://doi.org/10.1016/j.procbio.2013.05.002 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
https://real.mtak.hu/7271/1/Process%20Biochemistry_2013-F.pdf Boros, Zoltán and Weiser, Diána and Márkus, Mária and Kovács, Péter and Poppe, László and Abaháziová, Emese and Tomin, Anna and Koczkac, Béla and Magyar, Ágnes (2013) Hydrophobic adsorption and covalent immobilization of Candida antarctica lipase B on mixed-function-grafted silica gel supports for continuous-flow biotransformations. PROCESS BIOCHEMISTRY, 48 (7). pp. 1039-1047. ISSN 1359-5113 |
op_doi |
https://doi.org/10.1016/j.procbio.2013.05.002 |
container_title |
Process Biochemistry |
container_volume |
48 |
container_issue |
7 |
container_start_page |
1039 |
op_container_end_page |
1047 |
_version_ |
1801383587403005952 |