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Physical and Bioengineering Properties of Polyvinyl Alcohol Lens-Shaped Particles Versus Spherical Polyelectrolyte Complex Microcapsules as Immobilisation Matrices for a Whole-Cell Baeyer–Villiger Monooxygenase
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SYSNO ASEP 0433863 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Physical and Bioengineering Properties of Polyvinyl Alcohol Lens-Shaped Particles Versus Spherical Polyelectrolyte Complex Microcapsules as Immobilisation Matrices for a Whole-Cell Baeyer–Villiger Monooxygenase Author(s) Schenkmayerová, A. (SK)
Bučko, M. (SK)
Gemeiner, P. (SK)
Treľová, D. (SK)
Lacík, I. (SK)
Chorvát Jr., D. (SK)
Ačai, P. (SK)
Polakovič, M. (SK)
Lipták, L. (SK)
Rebroš, M. (SK)
Rosenberg, M. (SK)
Štefuca, V. (SK)
Neděla, Vilém (UPT-D) RID, ORCID, SAI
Tihlaříková, Eva (UPT-D) RID, ORCID, SAINumber of authors 14 Source Title Applied Biochemistry and Biotechnology. - : Springer - ISSN 0273-2289
Roč. 174, č. 5 (2014), s. 1834-1849Number of pages 16 s. Publication form Print - P Language eng - English Country DE - Germany Keywords polyelectrolyte complex microcapsules ; LentiKats ; confocal laser scanning microscopy ; inverse size exclusion chromatography ; environmental scanning electron microscopy ; Baeyer–Villiger biooxidation Subject RIV JA - Electronics ; Optoelectronics, Electrical Engineering R&D Projects GA14-22777S GA ČR - Czech Science Foundation (CSF) Institutional support UPT-D - RVO:68081731 UT WOS 000344339700012 DOI 10.1007/s12010-014-1174-x Annotation Direct comparison of key physical and chemical-engineering properties of two representative matrices for multipurpose immobilisations was performed for the first time. Polyvinyl alcohol lens-shaped particles LentiKats and polyelectrolyte complex microcapsules were characterised by advanced techniques with respect to the size distribution of the particles, their inner morphology as revealed by fluorescent probe staining, mechanical resistance, size-exclusion properties, determination of effective diffusion coefficient and environmental scanning electron microscope imaging. While spherical polyelectrolyte complex microcapsules composed of a rigid semipermeable membrane and a liquid core are almost uniform in shape and size (diameter of 0.82 mm; RSD=5.6 %), lens-shaped LentiKats are characterised by wider size distribution (diameter of 3.65 mm; RSD=10.3 % and height of 0.341 mm; RSD=32.3 %) and showed the same porous structure throughout their whole volume at the mesoscopic (micrometre) level. Despite differences in their inner structure and surface properties, the pore diameter of approx. 2.75 nm for regular polyelectrolyte complex microcapsules and approx1.89 nm for LentiKats were similar. These results were used for mathematical modelling, which provided the estimates of the effective diffusion coefficient of sucrose. This value was 1.67×10−10m2 s−1 for polyelectrolyte complexmicrocapsules and 0.36×10−10m2 s−1 for LentiKats. Recombinant cells Escherichia coli-overexpressing enzyme cyclopentanone monooxygenase were immobilised in polyelectrolyte complex microcapsules and LentiKats for comparison of their operational stability using model Baeyer–Villiger oxidation of (±)-cis-bicyclo [3.2.0] hept-2-en-6-one to regioisomeric lactones as important chiral synthons for potential pharmaceuticals. Both immobilisation matrices rendered high operational stability for whole-cell biocatalyst with no reduction in the biooxidation rate over 18 repeated reaction cycles. Workplace Institute of Scientific Instruments Contact Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Year of Publishing 2015
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