Decolorization of Congo red mediated by marine Alcaligenes species isolated from Indian West coast sediments

被引：16
|
作者：
D'Souza, Edna [1 ]
Fulke, Abhay B. [1 ]
Mulani, Najmuddin [1 ]
Ram, Anirudh [1 ]
Asodekar, Manish [1 ]
Narkhede, Niteen [2 ]
Gajbhiye, S. N. [1 ]
机构：
[1] CSIR NIO, Reg Ctr, Lokhandwala Rd,Four Bungalows, Mumbai 400053, Maharashtra, India
[2] CSIR IIIM, CSIR Innovat Complex, Mumbai 400053, Maharashtra, India
来源：
ENVIRONMENTAL EARTH SCIENCES | 2017年 / 76卷 / 20期
关键词：
Congo red (CR); Marine microbial decolorization; UV-visible spectrophotometer; FTIR; HPLC; LC/MS; BACILLUS SP; TEXTILE EFFLUENT; DYE; BIODEGRADATION; DETOXIFICATION; DEGRADATION; DECOLOURIZATION; IDENTIFICATION;
D O I：
10.1007/s12665-017-7077-8
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Alcaligenes species capable of degrading highly recalcitrant, carcinogenic, water-soluble dye-Congo red-were isolated from Indian West coastal sediments. Individual strains showed decolorization rates ranging from 76.49 to 98.76% within 24-48 h. Decolorization was most efficient at anoxic conditions catalyzed by intracellular azoreductase enzyme with an activity of 0.032 mu mol min(-1) mg(-1) of protein. Degradation was confirmed by HPLC and FTIR analysis. LC/MS analysis of degraded metabolites established the cleavage of the azo bond-producing biphenyl diamine and 1,20-diaminonapthalene-4-sulfonic acid. These results signify the effectiveness and ease to engineer processes such as feed batch/immobilized cell systems using these strains as biocatalysts to address the problem of global coastal water pollution caused by increased disposal of azo dye-containing industrial effluents.
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页数：13
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