Tannin acyl hydrolase (EC 3.1.1.20) activity of Aspergillus, Penicillium, Fusarium and Trichoderma

被引：45

作者：

Bajpai, B ^{[1
]}

Patil, S ^{[1
]}

机构：

[1] DEVI AHILYA UNIV,SCH LIFE SCI,INDORE 452001,MADHYA PRADESH,INDIA

来源：

WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY | 1996年 / 12卷 / 03期

关键词：

gallic acid; gallotannin; tannase; tannin acyl hydrolase;

D O I：

10.1007/BF00360918

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

A spectrophotometric method to determine gallic acid, residual gallotannin and tannin acyl hydrolase (EC 3.1.1.20) activity during microbial hydrolysis of pentagalloyl glucose is described. The following equations have been developed to estimate gallotannin and gallic acid in the incubation medium by absorbance measurements at two different wavelengths: concentration of gallotannin (mu g ml(-1)) = 34.41 (A(293.8)) - 6.98 (A(254.6)); concentration of gallic acid (mu g ml(-1)) = 21.77 (A(254.6)) - 17.17 (A(293.8)). As compared to Aspergillus and Penicillium, the fungal genera extensively studied for the production of this enzyme, Fusarium solanii and Trichoderma viride exhibited higher enzyme activity showing approximately 88 and 84 mole percent conversion respectively after a 24 h incubation period.

引用

页码：217 / 220

页数：4

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