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KMID : 0364820080440010037
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Korean Journal of Microbiology
2008 Volume.44 No. 1 p.37 ~ p.42
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Optimization of Bisphenol A Biodegradation by Trametes versicolor
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Kang Ae-Ri
Song Hong-Gyu
Choi Hyoung-Tae
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Abstract
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Optimal conditions for the biodegradation of endocrine-disrupting bisphenol A (BPA) were examined for the white rot fungus Trametes versicolor isolated in Korea. T. versicolor degraded 100% of 50 mg/L bisphenol A during 12 hr in yeast extract-malt extract-glucose (YMG) medium. When BPA was added to the 5-day preincubated fungal culture in YMG medium, all BPA was removed in 2 hr. T. versicolor could efficiently degrade BPA at 35oC, pH 6 in YMG medium. T. versicolor could more easily remove BPA of 1~25 mg/L than that of higher concentrations (50~100 mg/L) in YMG medium. T. versicolor degraded 100% of 50 mg/L BPA for 36 h in a minimal medium, which is lower degradation rate than that in YMG medium. Optimal conditions for BPA biodegradation in the minimal medium were similar to those in YMG medium. When BPA (50 mg/L) was added into domestic wastewater, it could be completely removed by T. versicolor. During the biodegradation of BPA by T. versicolor in YMG medium, its estrogenic activity decreased.
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KEYWORD
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biodegradation, bisphenol A, estrogenic activity, Trametes versicolor
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