Immobilization of lipase on epoxy-activated Purolite((R)) A109 and its post-immobilization stabilization
In this study, Purolite (R) A109, polystyrenic macroporous resin, was used as immobilization support due to its good mechanical properties and high particle diameter (400 mu m), which enables efficient application in enzyme reactors due to lower pressure drops. The surface of support had been modifi...
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Elsevier Sci Ltd, Oxford
2014
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ftunivbelgradftm:oai:TechnoRep.tmf.bg.ac.rs:123456789/2853 2023-12-24T10:10:19+01:00 Immobilization of lipase on epoxy-activated Purolite((R)) A109 and its post-immobilization stabilization Mihailović, Mladen Stojanović, Marija Banjanac, Katarina Carević, Milica Prlainović, Nevena Milosavić, Nenad Bezbradica, Dejan 2014 http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2853 https://doi.org/10.1016/j.procbio.2014.01.013 unknown Elsevier Sci Ltd, Oxford info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/46010/RS// info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172013/RS// 1359-5113 http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2853 doi:10.1016/j.procbio.2014.01.013 2-s2.0-84897913807 000335281800014 restrictedAccess ARR Process Biochemistry Lipase Purolite((R)) A109 Candida antarctica Immobilization Amino acids article publishedVersion 2014 ftunivbelgradftm https://doi.org/10.1016/j.procbio.2014.01.013 2023-11-28T17:19:52Z In this study, Purolite (R) A109, polystyrenic macroporous resin, was used as immobilization support due to its good mechanical properties and high particle diameter (400 mu m), which enables efficient application in enzyme reactors due to lower pressure drops. The surface of support had been modified with epichlorhydrine and was tested in lipase immobilization. Optimized procedure for support modification proved to be more efficient than conventional procedure for hydroxy groups (at 22 degrees C for 18 h), since duration of procedure was shortened to 40 min by performing modification at 52 degrees C resulting with almost doubled concentration of epoxy groups (563 mu mol g(-1)). Lipase immobilized on epoxy-modified support showed significantly improved thermal stability comparing to both, free form and commercial immobilized preparation (Novozym (R) 435). The highest activity (47.5 IU g(-1)) and thermal stability (2.5 times higher half-life than at low ionic strength) were obtained with lipase immobilized in high ionic strength. Thermal stability of immobilized lipase was further improved by blocking unreacted epoxy groups on supports surface with amino acids. The most efficient was treatment with phenylalanine, since in such a way blocked immobilized enzyme retained 65% of initial activity after 8 h incubation at 65 degrees C, while non-blocked derivative retained 12%. Article in Journal/Newspaper Antarc* Antarctica TechnoRep - Faculty of Technology and Metallurgy Repository Process Biochemistry 49 4 637 646 |
institution |
Open Polar |
collection |
TechnoRep - Faculty of Technology and Metallurgy Repository |
op_collection_id |
ftunivbelgradftm |
language |
unknown |
topic |
Lipase Purolite((R)) A109 Candida antarctica Immobilization Amino acids |
spellingShingle |
Lipase Purolite((R)) A109 Candida antarctica Immobilization Amino acids Mihailović, Mladen Stojanović, Marija Banjanac, Katarina Carević, Milica Prlainović, Nevena Milosavić, Nenad Bezbradica, Dejan Immobilization of lipase on epoxy-activated Purolite((R)) A109 and its post-immobilization stabilization |
topic_facet |
Lipase Purolite((R)) A109 Candida antarctica Immobilization Amino acids |
description |
In this study, Purolite (R) A109, polystyrenic macroporous resin, was used as immobilization support due to its good mechanical properties and high particle diameter (400 mu m), which enables efficient application in enzyme reactors due to lower pressure drops. The surface of support had been modified with epichlorhydrine and was tested in lipase immobilization. Optimized procedure for support modification proved to be more efficient than conventional procedure for hydroxy groups (at 22 degrees C for 18 h), since duration of procedure was shortened to 40 min by performing modification at 52 degrees C resulting with almost doubled concentration of epoxy groups (563 mu mol g(-1)). Lipase immobilized on epoxy-modified support showed significantly improved thermal stability comparing to both, free form and commercial immobilized preparation (Novozym (R) 435). The highest activity (47.5 IU g(-1)) and thermal stability (2.5 times higher half-life than at low ionic strength) were obtained with lipase immobilized in high ionic strength. Thermal stability of immobilized lipase was further improved by blocking unreacted epoxy groups on supports surface with amino acids. The most efficient was treatment with phenylalanine, since in such a way blocked immobilized enzyme retained 65% of initial activity after 8 h incubation at 65 degrees C, while non-blocked derivative retained 12%. |
format |
Article in Journal/Newspaper |
author |
Mihailović, Mladen Stojanović, Marija Banjanac, Katarina Carević, Milica Prlainović, Nevena Milosavić, Nenad Bezbradica, Dejan |
author_facet |
Mihailović, Mladen Stojanović, Marija Banjanac, Katarina Carević, Milica Prlainović, Nevena Milosavić, Nenad Bezbradica, Dejan |
author_sort |
Mihailović, Mladen |
title |
Immobilization of lipase on epoxy-activated Purolite((R)) A109 and its post-immobilization stabilization |
title_short |
Immobilization of lipase on epoxy-activated Purolite((R)) A109 and its post-immobilization stabilization |
title_full |
Immobilization of lipase on epoxy-activated Purolite((R)) A109 and its post-immobilization stabilization |
title_fullStr |
Immobilization of lipase on epoxy-activated Purolite((R)) A109 and its post-immobilization stabilization |
title_full_unstemmed |
Immobilization of lipase on epoxy-activated Purolite((R)) A109 and its post-immobilization stabilization |
title_sort |
immobilization of lipase on epoxy-activated purolite((r)) a109 and its post-immobilization stabilization |
publisher |
Elsevier Sci Ltd, Oxford |
publishDate |
2014 |
url |
http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2853 https://doi.org/10.1016/j.procbio.2014.01.013 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Process Biochemistry |
op_relation |
info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/46010/RS// info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172013/RS// 1359-5113 http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2853 doi:10.1016/j.procbio.2014.01.013 2-s2.0-84897913807 000335281800014 |
op_rights |
restrictedAccess ARR |
op_doi |
https://doi.org/10.1016/j.procbio.2014.01.013 |
container_title |
Process Biochemistry |
container_volume |
49 |
container_issue |
4 |
container_start_page |
637 |
op_container_end_page |
646 |
_version_ |
1786215024791912448 |