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- W4247359087 abstract "Abstract Background 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 considered as one of the most powerful biosurfactant due to its environmental applications, emulsification activities as well as therapeutic properties. Therefore, the aim of this study to investigate the surfactin like biosurfactants produced by newly strain S2MT and their potential applications for soil remediation. Results In this study, a novel biosurfactant producing strain Bacillus nealsonii S2MT was investigated from the lake sediment that reduced the surface tension 34.15± 0.6 mN/m -1 with excellent emulsifying potential 55± 0.3% in kerosene oil. Additionally, the highest biosurfactant product 1300 mg/L -1 was achieved during which the composition of the culture medium was optimized through a response surface methodology (RSM). Results showed that 2% glycerol and 0.1% NH 4 NO 3 were the best carbon/nitrogen substrates for biosurfactant production. The most significant parameters such as temperature (30 °C), pH (8), agitation (100 rpm), NH 4 NO 3 (0.1%), yeast extract (0%) and NaCl (0.5%) contributed to the surface tension reduction and therefore enhancing the biosurfactant yield. Moreover, the obtained product was found to be highly stable at environmental factors such as salinity, pH and temperature variations. In addition, the biosurfactant product was chemically characterized as cyclic lipopeptide relating to surfactin-like isoforms (C 13 -C 15 ) with a thin-layer chromatography (TLC) and liquid chromatography and mass spectroscopy (LC/MS) respectively. The corresponding biosurfactant displayed 43.6± 0.08 and 46.7± 0.01% remediation of heavy engine-oil contaminated soil at 10 and 40 mg/L concentrations respectively. Conclusion This study, therefore, confirmed that the strain S2MT was not only a potential biosurfactant producer but also an efficient and environmentally acceptable candidate for soil remediation compared to synthetic compounds." @default.
- W4247359087 created "2022-05-12" @default.
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- W4247359087 date "2020-01-28" @default.
- W4247359087 modified "2023-09-29" @default.
- W4247359087 title "Production and characterization of surfactin-like biosurfactant produced by novel strain Bacillus nealsonii S2MT and it's potential for oil contaminated soil remediation" @default.
- W4247359087 doi "https://doi.org/10.21203/rs.2.22091/v1" @default.
- W4247359087 hasPublicationYear "2020" @default.
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