Removal of Heavy Metal by Biosurfactant Producing Novel Halophilic Staphylococcus sciuri subsp. rodentium Strain SE I Isolated from Sambhar Salt Lake

Abstract

The application of halophilic biosurfactant-producing bacteria to remove the pollutants from textile effluent was investigated in the current study. Staphylococcus sciuri subsp. rodentium strain SE I isolated from Sambhar Salt Lake, Rajasthan showed the highest emulsification activity of 65 � 1.2 % after 96 h of incubation with a yield of 0.189 g/l of biosurfactant. The surface tension was reduced to 46.23 mN/m � 0.46 after 72 h at pH 7.0. The presence of non-ribosomal protein sequences gave a hint of the presence of surfactin-type lipopeptide biosurfactant and Copper Translocating P-type ATPase enzyme sequences indicat-ing its presence can confer resistance against heavy metals. Strain SE I showed the potential to remove heavy metals from textile effluent viz. 67 % of Cd, 64 % of Pb, 59 % of Cu, 50 % of, Cr, and 33 % of Ni after 7 days of treatment as well exhibited decolorization of dyes ranging from 61 % � 0.15 to 95 % � 1.03, respectively. Based on the research findings, it is reasonable to conclude that surfactin biosurfactant extracted from S. sciuri subsp. rodentium strain SE I can be an alternative biosorbent and function as a bioremediation agent.

Wastewater treatment using moving bed biofilm reactor technology: a case study of ceramic industry

“…subtilis TES IV (MZ683213), C. oceanisediminis TES V (MZ683216), S. sciuri subsp. rodentium strain SE I (MT672499), Bacillus haynesii strain SAII (MT232984), B. licheniformis strain SCI (MT648751), and Bacillus swezeyi strain SE III (MT648773) are surfactin producers (Kumari et al, 2022; Sharma, Gautam, Debnath, & Debnath, 2022; Sharma, Rekhi, & Debnath, 2022; Sharma, Rekhi, Kumari, & Debnath, 2022). R. ruber TES II (MZ683210) is a unique bacterium with potential for surfactin and rhamnolipid production.…”

“…subtilis TES IV (MZ683213), Cytobacillus oceanisediminis TES V (MZ683216), Staphylococcus sciuri subsp. rodentium strain SEI (MT672499), Enterobacter cloacae strain AP001 (MK613452), Pseudomonas aeruginosa strain Pa84 (MZ348930.1), Bacillus haynesii strain SAII (MT232984), Bacillus licheniformis strain SCI (MT648751), and Bacillus swezeyi strain SE III (MT648773), isolated from textile effluent contaminated soil and mud from the saline natural estuarine Sambhar lake were selected (Kumari et al, 2022; Sharma, Gautam, Debnath & Debnath et al, 2022; Sharma, Rekhi, & Debnath, 2022; Sharma, Rekhi, Kumari, & Debnath, 2022). All these isolates have been experimentally found to produce biosurfactants and thus are suitable for use as a consortium.…”

Harnessing the Potential of Bacterial Consortia and Biosurfactants for Bioremediation of Textile Effluent and Contaminated Soil

“…It is evident from previous studies that the consortia demonstrated the potential for producing both rhamnolipid and surfactin types of biosurfactants. 16,17,26 3.5.3. FAME Analysis of the Consortia of Bacteria Using GC-MS. Fatty acid methylated esterification (FAME) was performed for analysis of the fatty acid profile of the biosurfactant from consortia of biosurfactant-producing bacteria using gas chromatography−mass spectrometry (GC-MS).…”