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http://dx.doi.org/10.5352/JLS.2006.16.7.1158

Isolation of Acinetobacter calcoaceticus BP-2 Capable of Degradation of Bisphenol A  

Kwon, Gi-Seok (The School of Bioresource Sciences, Andong National University)
Kim, Dong-Geol (The School of Bioresource Sciences, Andong National University)
Lee, Jung-Bok (The School of Bioresource Sciences, Andong National University)
Shin, Kee-Sun (Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology)
Kum, Eun-Joo (Department of Food and Nutrition, Andong National University)
Sohn, Ho-Yong (Department of Food and Nutrition, Andong National University)
Publication Information
Journal of Life Science / v.16, no.7, 2006 , pp. 1158-1163 More about this Journal
Abstract
Bisphenol A (BPA), 2,2-bis(4-hydroxyphenyl) propane, has been widely used as a monomer for production of epoxy resins and polycarbonate plastics, and final products of BPA include adhesives, protective coatings, paints, optical lens, building materials, compact disks and other electrical parts. Since BPA is a toxic chemical to elicit acute cell cytotoxicity and chronic endocrine disrupting activity, the degradation of BPA has been focused during last decades. To overcome the problem of photo-, and chemical-degradation of BPA, in this study, a bacterium that is able to biodegrade BPA, was isolated. The bacterium, isolated froln the soil of plastic factory, was identified as Acinetobacter calcoaceticus (strain BP-2) based on physiological and 16S rDNA sequencing analysis. A. calcoaceticus BP-2 was able to grow in the presence of $1140{\mu}g\;ml^{-1}$ BPA. Biodegradation experiments showed that BP-2 mineralized BPA via 4-hydroxybenzoic acid and 4-hydroxyacetophenone, and average degradation rate was $53.3{\mu}g\;ml^{-1}\;day^{-1}$ under optimal conditions (pH 7 and $30^{\circ}C$). In high density resting cell $(3.5g-dcw.1^{-1})$ experiments, the maximal degradation rate was increased to $89.7{\mu}g\;ml^{-1}\;h^{-1}$. Our results suggest that BP-2 has high potential as a catalyst for practical BPA bioremediation.
Keywords
Acinetobacter calcoaceticus BP-2; biodegradation; bisphenol A; detoxification;
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