Production and characterization of surfactin-like biosurfactant produced by novel strain Bacillus nealsonii S2MT and it's potential for oil contaminated soil remediation.

Microbial Cell Factories
Irfan Ali PhulpotoMuneer Ahmed Qazi

Abstract

Biosurfactants, being highly biodegradable, ecofriendly and multifunctional compounds have wide applications in various industrial sectors including environmental bioremediation. Surfactin, a member of lipopeptide family, which is considered as one of the most powerful biosurfactants due to its excellent emulsifying activities as well as environmental and therapeutic applications. Therefore, the aim of this study was to investigate the newly isolated bacterial strain S2MT for production of surfactin-like biosurfactants and their potential applications for oil-contaminated soil remediation. In this study, the strain S2MT was isolated from lake sediment and was identified as Bacillus nealsonii based on transmitted electron microscopy (TEM) and 16S rRNA ribo-typing. The strain S2MT produced biosurfactant that reduced the surface tension (34.15 ± 0.6 mN/m) and displayed excellent emulsifying potential for kerosene (55 ± 0.3%). Additionally, the maximum biosurfactant product yield of 1300 mg/L was achieved when the composition of the culture medium was optimized through response surface methodology (RSM). Results showed that 2% glycerol and 0.1% NH4NO3 were the best carbon/nitrogen substrates for biosurfactant production. The parame...Continue Reading

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Citations

Aug 28, 2020·Microbial Cell Factories·Prem ChandraPankaj Kumar Arora
Jan 20, 2021·Brazilian Journal of Microbiology : [publication of the Brazilian Society for Microbiology]·Walter Chinaka JohnCharles Chidozie Iheukwumere
Jun 14, 2021·Journal of Hazardous Materials·Sandhya MishraShaohua Chen

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