Biodegradation Effect of some Bacterial Isolates on some Endocrine Disruptors (EDCS)

Abstract

Endocrine disruptors [EDCs] raised a certain concern for living health began since last century, via interfere with natural hormone functions and produce reversible or irreversible biological effects. Bisphenol (BPA) is an organic compounds that causing human health risks. Different bacterial spp. has biodegradation ability for wide range of EDC. Twenty water samples were collected from different area around Baghdad city. Four bacterial isolates were isolated included [Pseudomonas aeruginosa, Pseudomonas luteola, Proteus penneri, and Escherichia coli]. All isolates were characterized morphologically and biochemically. The effect of substrate tolerate bisphenol (BPA) [5 mg/ ml] using well diffusion method were investigated. The biodegradation effect of bacterial isolates on breakdown BPA and its derivatives using UV vis spectrophotometer were studied and comparing in various incubation time and temperatures to assess the effect of physical conditions on bacterial ability of BPA degradation. P. penneri showed a significant ability to resist para-phenol and meta-phenol, while highly sensitive to ortho-aminophenol and paracresol. P. aeroginosa was sensitive to para and meta- aminophenol, while resist to degraded phenol compounds ortho aminophenol and para cresol]. P. luteola was resistance for all phenolic compounds, while E.coli showed sensitivity for para cresol only. Biodegradation effect data showed a significant effect for P. luteola after 15 days of incubation followed by P. penorri and E.coli. to degrade phenolic compounds. Data demonstrated that P. luteola has an obvious degradation effect for BPA after 15 days of incubation. However, P. aeruginosa showed an absolutely different behavior toward BPA which showed an raising absorbance after 15 days of incubation. The aim of this study is to identify the ability of different local bacterial isolates to breakdown the phenol compounds and its derivatives in surface water. This has certain impact on the water purification and industry to provide safe water for consumers.