title: Aqueous phase partitioning of hexachlorocyclohexane (HCH) isomers by biosurfactant produced by Pseudomonas aeruginosa WH-2.
abstract: The different isomers of technical-grade hexachlorocyclohexane (t-HCH) including the insecticidal gamma-isomer, commonly known as lindane, have been reported to be toxic, carcinogenic and endocrine disrupters. The spatial arrangements of the chlorine atoms on different isomers and low aqueous phase solubility contribute to their persistence in environment, beta-HCH being the most resistance to transformation. The biosurfactant preparation of Pseudomonas aeruginosa isolate WH-2 was evaluated for its ability to improve the aqueous phase partitioning of different isomers of HCH-muck. Further, the ability of biosurfactant preparation to emulsify HCH and n-hexadecane was checked under different conditions, usually characteristic of sites contaminated with pollutants viz. wide range of pH, temperature, and salinity. The data obtained from this study will be helpful in designing suitable bioremediation strategies for huge stock piles of HCH-muck and sites polluted by reckless use/disposal of HCH-isomers.
authors.affiliation: Department of Microbiology, Guru Nanak Dev University, Amritsar 143005, Punjab, India.
authors.forename: Suman
authors.initials: S
authors.lastname: Sharma
authors.forename: Partapbir
authors.initials: P
authors.lastname: Singh
authors.forename: Mayil
authors.initials: M
authors.lastname: Raj
authors.forename: Bhupinder Singh
authors.initials: BS
authors.lastname: Chadha
authors.forename: Harvinder Singh
authors.initials: HS
authors.lastname: Saini
mesh_terms: D001673:Biodegradation, Environmental; D045703:Emulsifying Agents / Q000737:chemistry; D004784:Environmental Monitoring / Q000379:methods; D052918:Environmental Restoration and Remediation; D001556:Hexachlorocyclohexane / Q000737:chemistry*; D006358:Hot Temperature; D006863:Hydrogen-Ion Concentration; D008823:Micelles; D020033:Protein Isoforms; D011550:Pseudomonas aeruginosa / Q000378:metabolism*; D012492:Salts / Q000737:chemistry; D012989:Soil Pollutants / Q000737:chemistry; D013501:Surface-Active Agents / Q000737:chemistry*; D013696:Temperature
chemical_list: D045703:Emulsifying Agents; D008823:Micelles; D020033:Protein Isoforms; D012492:Salts; D012989:Soil Pollutants; D013501:Surface-Active Agents; D001556:Hexachlorocyclohexane