Azo dye decolorization with a mutant Escherichia coli strain

被引：74

作者：

Chang, JS ^{[1
]}

Kuo, TS ^{[1
]}

Chao, YP ^{[1
]}

Ho, JY ^{[1
]}

Lin, PJ ^{[1
]}

机构：

[1] Feng Chia Univ, Dept Chem Engn, Taichung 40724, Taiwan

来源：

BIOTECHNOLOGY LETTERS | 2000年 / 22卷 / 09期

关键词：

azo dye; decolorization; Escherichia coli;

D O I：

10.1023/A:1005624707777

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 recombinant Escherichia coli strain (E. coli NO3) containing genomic DNA fragments from ate-reducing wild-type Pseudomonas luteola strain decolorized a reactive azo dye (C.I. Reactive Red 22) at approx. 17 mg dye h(-1) g cell. The ability to decolorize the azo dye probably did not originate from the plasmid DNA. Acclimation in azo-dye-containing media gave a nearly 10% increase in the decolorization rate of E. coli NO3. Growth with 1.25 g glucose l(-1) completely stopped the decolorization activity. When the decolorization metabolites from E. coli NO3 were analyzed by HPLC and MS, the results suggested that decolorization of the azo dye map be due to cleavage of the azo bond.

引用

页码：807 / 812

页数：6

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