Biosynthesis of valonia tannin hydrolase and hydrolysis of valonia tannin to ellagic acid by Aspergillus SHL 6

Using valonia tannin (an ellagitannin) as the substrate, factors influencing the yield of ellagic acid and biosynthesis of valonia tannin hydrolase by Aspergillus SHL 6 are investigated. Valonia tannin concentration, pH, temperature, carbon and nitrogen sources during the fermentation are identified...

Full description

Saved in:
Bibliographic Details
Published in:Process biochemistry (1991) 2005-03, Vol.40 (3), p.1245-1249
Main Authors: Huang, Wen, Ni, Jinren, Borthwick, Alistair G.L.
Format: Article
Language:English
Subjects:
Aspergillus SHL 6
Ellagitannin
Tannase
Valonia tannin
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Using valonia tannin (an ellagitannin) as the substrate, factors influencing the yield of ellagic acid and biosynthesis of valonia tannin hydrolase by Aspergillus SHL 6 are investigated. Valonia tannin concentration, pH, temperature, carbon and nitrogen sources during the fermentation are identified as important hydrolysis parameters. The yield of ellagic acid and the hydrolase activity of valonia tannin both have maximum values (within the range of the tests) when 100 ml of culture medium containing 5.0 g l −1 of valonia tannin in a 250 ml conical beaker is incubated at 28 °C and initial pH from 4.5 to 5.0 using a rotary shaker at 120 rpm for 72 h.
ISSN:1359-5113
1873-3298
DOI:10.1016/j.procbio.2004.05.004