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Optical resolution of racemic pantolactone by Fusarium sp. BU-011 with high lactonohydrolase activity

Paper ID Volume ID Publish Year Pages File Format Full-Text
36445 45133 2005 6 PDF Available
Title
Optical resolution of racemic pantolactone by Fusarium sp. BU-011 with high lactonohydrolase activity
Abstract

Fusarium sp. BU-011, as a high-yielding strain for d-pantolactone hydrolase production was screened from 19 Fusarium sp. strains. The conditions for enzyme formation were studied. The most suitable carbon source for d-pantolactone hydrolase production was sucrose and the best nitrogen source was corn steep liquor. The optimum temperature and the initial pH for enzyme formation was 26 °C and pH 7.0, respectively. When the fungus was cultured in a medium containing 30 g/L sucrose, 100 g/L corn steep liquor in the 10 L fermentor, 30.2 g dry cells/L and 410 U/L lactonohydrolase activity were obtained. For optical resolution, the optimum temperature and the optimum pH for the reaction with free cells was 50 °C and pH 7.0, respectively. The optimum substrate concentration was 200 g/L racemic pantolactone. The lactonohydrolase activity of immobilized cells remained at 80% of the original reaction after 20 batches of reuse.

Keywords
Fusarium sp. BU-011; Lactonohydrolase; d-Pantolactone; Immobilized cells
First Page Preview
Optical resolution of racemic pantolactone by Fusarium sp. BU-011 with high lactonohydrolase activity
Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 40, Issue 8, July 2005, Pages 2609–2614
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering