Improvement in Cysteine Production by Different Bacterial Strains

Nazish Mazhar Ali*, Bushra Mazhar and Abdullah Mazhar

Received: May 20, 2018;   Published: May 29, 2018

DOI: 10.26717/BJSTR.2018.05.001130

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Abstract

Samples were collected from water, soil, honey and Sewage. Bacteria with ability to produce cysteine were isolated. 50 bacteria were isolated, of which 20 produced amino acids like lysine, cysteine, methionine, glutamic acid, Valine etc. From 20 isolates only 05 produced significant amount of cysteine. The cysteine production by bacteria was improved using different fermentation media and mutation including UV rays and with nitrous oxide. Using different fermentation media, bacterial strains produced different amount of cysteine. Bacterial strain MM5 produced significant cystiene which was 7.8gram/litre.

Keywords: Amino acid production, Cysteine, Microbial production of cysteine

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