Detailed Information on Publication Record
2014
Microscopic Monitoring Provides Information on Structure and Properties During Biocatalyst Immobilisation.
BIDMANOVÁ, Šárka, Eva HRDLIČKOVÁ, Josef JAROŠ, Ladislav ILKOVICS, Aleš HAMPL et. al.Basic information
Original name
Microscopic Monitoring Provides Information on Structure and Properties During Biocatalyst Immobilisation.
Authors
BIDMANOVÁ, Šárka (203 Czech Republic, belonging to the institution), Eva HRDLIČKOVÁ (203 Czech Republic), Josef JAROŠ (203 Czech Republic, belonging to the institution), Ladislav ILKOVICS (203 Czech Republic, belonging to the institution), Aleš HAMPL (203 Czech Republic, belonging to the institution), Jiří DAMBORSKÝ (203 Czech Republic, belonging to the institution) and Zbyněk PROKOP (203 Czech Republic, guarantor, belonging to the institution)
Edition
Biotechnology Journal, WEINHEIM, GERMANY, WILEY-V C H VERLAG GMBH, 2014, 1860-6768
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10600 1.6 Biological sciences
Country of publisher
Germany
Confidentiality degree
není předmětem státního či obchodního tajemství
Impact factor
Impact factor: 3.490
RIV identification code
RIV/00216224:14310/14:00074208
Organization unit
Faculty of Science
UT WoS
000337700000015
Keywords in English
Cross-linked enzyme aggregates; Immobilization; Microscopy; Polyvinyl alcohol; Structure
Tags
International impact, Reviewed
Změněno: 21/3/2017 08:05, prof. Mgr. Jiří Damborský, Dr.
Abstract
V originále
Enzymes have a wide range of applications in different industries owing to their high specificity and efficiency. Immobilisation is often used to improve biocatalyst properties, operational stability and reusability. However, changes in the structure of biocatalysts during immobilisation and under process conditions are still largely uncertain. Here, three microscopy techniques – bright-field, confocal and electron microscopy – were applied to determine the distribution and structure of an immobilised biocatalyst. Free enzyme (haloalkane dehalogenase), cross-linked enzyme aggregates (CLEAs) and CLEAs entrapped in polyvinyl alcohol lenses (lentikats) were used as model systems. Electron microscopy revealed that sonicated CLEAs underwent morphological changes that strongly correlated with increased catalytic activity compared to less structured, non-treated CLEAs. Confocal microscopy confirmed that loading of the biocatalyst was not the only factor affecting the catalytic activity of the lentikats. Confocal microscopy also showed a significant reduction in the pore size of lentikats exposed to 25% tetrahydrofuran and 50% dioxane. Narrow pores appeared to provide protection to CLEAs from the detrimental action of cosolvents, which significantly correlated with higher activity of CLEAs compared to free enzyme. The results showed that microscopy can provide valuable information about the structure and properties of a biocatalyst during immobilisation and under process conditions.
Links
EE2.3.20.0183, research and development project |
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GAP207/12/0775, research and development project |
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LO1214, research and development project |
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