Isolation of <Emphasis Type="Italic">Virgibacillus</Emphasis> sp. strain KU4 from agricultural soil as a potential degrader of endocrine disruptor bisphenol-A |
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| Authors: | M Kamaraj S Rajeshwari J Aravind |
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| Institution: | 1.Department of Biotechnology, College of Biological and Chemical Engineering,Addis Ababa Science and Technology University,Addis Ababa,Ethiopia;2.Department of Chemistry,Government Arts College,Udumalpet, Tiruppur,India |
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| Abstract: | Bisphenol-A is one of the highest volumes of chemicals produced worldwide and released into the atmosphere each year. Recent extensive literature has raised concerns about its possible endocrine-disrupting effect in animals and humans. A bacterium having high tolerance of bisphenol-A (1000 mg L?1) was isolated from agriculture soil of Coimbatore District, Tamil Nadu, India, and identified as Virgibacillus sp. KU4 by 16S ribosomal RNA sequence analysis. Bisphenol-A removal efficiency of this strain was measured as greater than 92% at seventh day of incubation in a basal mineral medium supplemented with 1000 mg L?1 at seventh day. Gas chromatography analysis showed that 1000 mg L?1 BPA in distilled water was degraded by the Virgibacillus sp. KU4 in an efficient way. A 70 ± 3% bisphenol-A degradation was observed in the suspended cell pellet-mediated degradation study, where distilled water supplemented with 1000 mg L?1 bisphenol-A was sole carbon and energy source for bacterial growth. Further, Virgibacillus sp. KU4 is expected to be a candidate as a biological cleaner of BPA in the environment. |
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