KMID : 0545120070170071147
|
|
Journal of Microbiology and Biotechnology 2007 Volume.17 No. 7 p.1147 ~ p.1151
|
|
Biodegradation of Endocrine-disrupting Bisphenol A by White Rot Fungus Irpex lacteus
|
|
Shin Eun-Hye
Choi Hyoung-Tae Song Hong-Gyu
|
|
Abstract
|
|
|
Biodegradation of endocrine-disrupting bisphenol A was investigated with several white rot fungi (Irpex lacteus, Trametes versicolor, Ganoderma lucidum, Polyporellus brumalis, Pleurotus eryngii, Schizophyllum commune) isolated in Korea and two transformants of T. versicolor (strains MrP 1 and MrP 13). I. lacteus degraded 99.4% of 50 mg/l bisphenol A in 3 h incubation and 100% in 12 h incubation. which was the highest degradation rate among the fungal strains tested. T. versicolor degraded 98.2% of 50 mg/l bisphenol A in 12 h incubation. Unexpectedly, the transformant of the Mn-repressed peroxidase gene of T. versicolor, strain MrP 1, degraded 76.5% of 50 mg/l bisphenol A in 12 h incubation, which was a lower degradation rate than wild-type T. versicolor. The removal of bisphenol A by I. lacteus occurred mainly by biodegradation rather than adsorption. Optimum carbon sources for biodegradation of bisphenol A by I. lacteus were glucose and starch, and optimum nitrogen sources were yeast extract and tryptone in a minimal salts medium; however, bisphenol A degradation was higher in nutrient-rich YMG medium than that in a minimal salts medium. The initial degradation of endocrine disruptors was accompanied by the activities of manganese peroxidase and laccase in the culture of I. lacteus
|
|
KEYWORD
|
|
Biodegradation, bisphenol A, endocrine disruptor, white rot fungi
|
|
FullTexts / Linksout information
|
|
|
|
Listed journal information
|
|
|
|