Study of formation of valuable organic products from bioremediation of chlorpyrifos by bacteria catalyzed by molybdenum and zinc salt

Abstract

Experimental studies have been carried out to find the bioremediation activity of bacteria with molybdenum and zinc ions separately on the toxic insecticide, chlorpyrifos. Two bacterial strains, ZS20 (Enterobacter sp. strain TSNG) and E57 (Pseudomonas sp. strain GRTM) and three inorganic salts: ammonium-molybdate, sodium-molybdate, and zinc-nitrate, have been used for the degradation of toxic insecticide, chlorpyrifos. The metabolic products obtained are chelating organic acids, such as maleamic acid, ascorbic acid, salicylic acid, and other different derivatives of soluble-phosphate and phosphatase enzymes. They help for the better growth of plants. Ammonium-molybdate along with ZS20 strain is more active for the production of metabolic products and the growth of plants than the other combination. The liquid chromatography and mass spectrometry data of ZS20 and ammonium-molybdate salt portray complete degradation of chlorpyrifos into nontoxic valuable products. Hence, this combination can be used as good bioremediater as well as good biofertilizer. Results have been tabulated, shown graphically and discussed.