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Anal Biochem. 2001 Aug 15;295(2):168-71.

Colorimetric assay method for determination of the tannin acyl hydrolase (EC 3.1.1.20) activity.

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1
Microbiology Laboratory, Department of Botany & Forestry, Vidyasagar University, Midnapore 721 102, West Bengal, India.

Abstract

A new colorimetric method of tannase (tannin acyl hydrolase, EC 3.1.1.20) assay has been developed using its specific substrate tannic acid. It is based on the changes in optical density of substrate tannic acid after enzymatic reaction at 530 nm. The residual tannic acid was measured by a modified BSA precipitation method. This assay is very simple, reproducible, and very convenient, and with it tannase activity can be measured in relation to the growth of the organism.

PMID:
11488618
DOI:
10.1006/abio.2001.5185
[Indexed for MEDLINE]
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