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Title of Journal: Biotechnol Lett

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Abbravation: Biotechnology Letters

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Springer Netherlands

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DOI

10.1007/s00535-008-2190-9

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1573-6776

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Enzymatic transformation of nitroaromatic compoun

Authors: Santosh A Misal Devendra P Lingojwar Mahendra N Lokhande Pradeep D Lokhande Kachru R Gawai
Publish Date: 2013/09/26
Volume: 36, Issue: 1, Pages: 127-131
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Abstract

Azo dyes and nitroaromatic compounds are the largest group of pollutants released in the environment as industrial wastes They create serious health and environmental problems Azoreductases catalyze the reduction of azo dyes and nitro compounds to their respective amines AN azoreductase was purified up to 12fold from Lysinibacillus sphaericus using ionexchange and size exclusion chromatography It was optimally active at pH 74 and 75 °C It was stable at 70 °C for 30 min The purified enzyme utilized NADH rather than NADPH as an electron donor to reduce substrates The molecular weight of the purified enzyme was ~29 kDa The enzyme also acted as nitroreductase and could selectively reduce the nitro group of 2nitrophenol 4nitrobenzoic acid 2nitrobenzaldehyde and 3nitrophenol Reduction products of these compounds were identified by IR and NMR

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