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  • Title: Degradation of malathion by salt-marsh microorganisms.
    Author: Bourquin AW.
    Journal: Appl Environ Microbiol; 1977 Feb; 33(2):356-62. PubMed ID: 192147.
    Abstract:
    Numerous bacteria from a salt-marsh environment are capable of degrading malathion, an organophosphate insecticide, when supplied with additional nutrients as energy and carbon sources. Seven isolates exhibited ability (48 to 90%) to degrade malathion as a sole carbon source. Gas and thin-layer chromatography and infrared spectroscopy confirmed malathion to be degraded via malathion-monocarboxylic acid to the dicarboxylic acid and then to various phosphothionates. These techniques also identified desmethyl-malathion, phosphorthionates, and four-carbon dicarboxylic acids as degradation products formed as a result of phosphatase activity.
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