CWE/910/2017 当前世界环境 0973-4929 2320-8031 Enviro Research Publishers CWE--37-00 Bio-Mineralization of Organophosphorous Insecticide-Chlorpyrifos and its Hydrolyzed Product 3,5,6-Trichloro-2-Pyridinol by Staphylococcus Sp. ES-2 2016-08-31 10.12944 /连续波E.11.2.17 Volume 11 Volume 11 486-491 Abstract

Application of Chlorpyrifos on agricultural fields to protect crops against pests results in accumulation of it in soil and other environmental samples. The insecticide transform  into  3,5,6-Trichloro-2-Pyridinol (TCP) through hydrolysis in soil, which has got antimicrobial property and hence resists its degradation in natural condition. In the current findings, a bacterial isolate capable of mineralizing Chlorpyrifos without accumulation of TCP was isolated from agricultural soil by enrichment method. Based on Morphological, Biochemical Characterization and with Bergey’s Manual comparision, the isolate was identified as Staphylococcus sp. The isolate was found to metabolize chlorpyrifos completely in Mineral salt medium with chlorpyrifos as the sole carbon source. No metabolites of chlorpyrifos were detected in Liquid Chromatography-Mass Spectroscopy (LC-MS) analysis after 7 days of incubation. The novelty of the outcome of the experiment relies on Staphylococcus sp.ES-2 in complete mineralization of chlorpyrifos which can be used as a potential bioaugmenting agent in the chlorpyrifos contaminated sites.

Keywords Biomineralization 毒死蜱 3 5 6-Trichloro-2-Pyridinol Staphylococcus Sp.ES-2