A Spectrophotometric Method for Assay of Tannase Using Rhodanine
โ Scribed by Shweta Sharma; T.K. Bhat; R.K. Dawra
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 59 KB
- Volume
- 279
- Category
- Article
- ISSN
- 0003-2697
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โฆ Synopsis
A method for assay of microbial tannase (tannin acyl hydrolase) based on the formation of chromogen between gallic acid and rhodanine is reported. Unlike the previous protocols, this method is sensitive up to gallic acid concentration of 5 nmol and has a precision of 1.7% (relative standard deviation). The assay is complete in a short time, very convenient, and reproducible.
๐ SIMILAR VOLUMES
\(\alpha\)-Ketoaldehydes have been extensively employed as reagents for the chemical modification of arginine residues in proteins, and to probe for putative anion recognition sites. A major disadvantage in their use is instability, as \(\alpha\)-ketoaldehydes are prone to hydration, oxidation, and