Preferential biodegradation of structurally dissimilar dyes from a mixture by Brevibacillus laterosporus

被引：65

作者：

Kurade, Mayur B. ^{[2
]}

Waghmode, Tatoba R. ^{[1
]}

Govindwar, Sanjay P. ^{[1
]}

机构：

[1] Shivaji Univ, Dept Biochem, Kolhapur 416004, Maharashtra, India

[2] Shivaji Univ, Dept Biotechnol, Kolhapur 416004, Maharashtra, India

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2011年 / 192卷 / 03期

关键词：

HPTLC; Decolorization; ADMI; Biotransformation; Dye mixture; SPHINGOBACTERIUM SP ATM; TEXTILE DYE; MALACHITE-GREEN; POLYHYDROXYHEXADECANOIC ACID; WASTE BIOMASS; REACTIVE DYES; AZO DYES; DECOLORIZATION; DEGRADATION; EFFLUENT;

D O I：

10.1016/j.jhazmat.2011.07.004

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Biodegradation of a mixture containing seven commercial textile dyes with different structures and color properties has been investigated by an ecofriendly strain - Brevi bacillus laterosporus MTCC 2298. It showed 87% decolorization in terms of ADMI removal (American Dye Manufacturing Institute) within 24h. The effective decolorization of dye mixture was attained in the presence of metal salt - CaCl2 and nitrogen sources. The induction of oxido-reductive enzymes such as veratryl alcohol oxidase, tyrosinase, NADH-DCIP reductase and azo reductase was found to be responsible for biotransformation of dyes. High performance thin layer chromatography exposed the mechanism of preferential biodegradation of dyes at different time periods. Significant change in the high pressure liquid chromatography and Fourier transform infrared spectroscopy of sample before and after treatment confirmed the biodegradation of dye mixture. Phytotoxicity study revealed the much less toxic nature of the metabolites produced after the degradation of dyes mixture. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：1746 / 1755

页数：10

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