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Biosynthesis of p-methoxyphenylacetic acid from p-methoxyphenylacetonitrile by immobilized Bacillus subtilis ZJB-063

Paper ID Volume ID Publish Year Pages File Format Full-Text
35424 45089 2008 6 PDF Available
Title
Biosynthesis of p-methoxyphenylacetic acid from p-methoxyphenylacetonitrile by immobilized Bacillus subtilis ZJB-063
Abstract

Bioconversion of p-methoxyphenylacetonitrile (MOPAN) to p-methoxyphenylacetic acid (MOPAA) by immobilized cells of Bacillus subtilis ZJB-063, a nitrilase producing strain, was investigated in batch and repeated batch. Four entrapment matrixes were screened to search for a suitable support in terms of enzyme activity and reusability of the bead, and alginate exhibited significant process advantages over its other counterparts. The effects of sodium alginate concentration, bead diameter, CaCl2 concentration were examined. Maximum activity was achieved when the above parameters were set as 2.5% sodium alginate, 2 mm of bead diameter, 4.0% CaCl2. An initial MOPAN concentration of 10 mM was completely converted to MOPAA by entrapped cells after 8 h reaction under the optimized conditions. Efficient reusability of the biocatalyst up to nine batches was achieved by immobilization, and treatment with polyethyleneimine (PEI) and glutaraldehyde (GA) further extended the longevity to 18 batches.

Keywords
p-Methoxyphenylacetonitrile; p-Methoxyphenylacetic acid; Immobilization; Alginate; Bacillus subtilis ZJB-063; Polyethyleneimine
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Biosynthesis of p-methoxyphenylacetic acid from p-methoxyphenylacetonitrile by immobilized Bacillus subtilis ZJB-063
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 43, Issue 9, September 2008, Pages 978–983
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us