A comprehensive study on bisphenol A degradation by newly isolated strains Acinetobacter sp. K1MN and Pseudomonas sp. BG
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ORIGINAL PAPER
A comprehensive study on bisphenol A degradation by newly isolated strains Acinetobacter sp. K1MN and Pseudomonas sp. BG12 Magdalena Noszczyn´ska Zofia Piotrowska-Seget
. Michalina Chodo´r . Łukasz Jałowiecki .
Received: 25 April 2020 / Accepted: 7 November 2020 Ó The Author(s) 2020
Abstract Bisphenol A (BPA) is an endocrine disrupting chemical. Its extensive use has led to the wide occurrence of BPA in various environmental ecosystems, at levels that may cause negative effects to the ecosystem and public health. Although there are many bacteria able to BPA utilization, only a few of them have a strong capacity for its biodegradation. Therefore, it is important to search for new bacteria strains, investigate their BPA biodegradation ability and potential effect of pH and other organic compounds on the process. These tasks have become the object of the present study. The results of our research show that for the newly isolated strains Acinetobacter sp. K1MN and Pseudomonas sp. BG12 after 15 days, with an initial BPA concentration of 100 mg L- 1, the highest BPA removal was achieved at pH 8, while sodium glutamate as a biostimulant best accelerated BPA
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10532-020-09919-6) contains supplementary material, which is available to authorized users. M. Noszczyn´ska (&) M. Chodo´r Z. Piotrowska-Seget Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Jagiellon´ska 28, 40-032 Katowice, Poland e-mail: [email protected] Ł. Jałowiecki Microbiology Unit, Institute for Ecology of Industrial Areas, Kossutha 6, 40-844 Katowice, Poland
degradation. Kinetic data for BPA biodegradation by both strains best fitted the Monod model. The specific degradation rate and the half saturation constant were estimated respectively as 8.75 mg L- 1 day- 1 and 111.27 mg L- 1 for Acinetobacter sp. K1MN, and 8.6 mg L- 1 day- 1 and 135.79 mg L- 1 for Pseudomonas sp. BG12. The half-maximal effective concentration (EC50) of BPA for Acinetobacter sp. K1MN was 120 mg L- 1 and for Pseudomonas sp. BG12 it was 123 mg L- 1. The toxicity bioassay (Microtox test) showed that elimination of BPA by both strains is accompanied by reduction of its toxic effect. The ability of tested strains to degrade BPA combined with their high resistance to this xenobiotic indicates that Acinetobacter sp. K1MN and Pseudomonas sp. BG12 are potential tools for BPA removal during wastewater treatment plant. Keywords Bisphenol A Acinetobacter sp. K1MN Pseudomonas sp. BG12 Biodegradation Toxicity
Introduction Bisphenol A (BPA; 2,2-bis(4-hydroxyphenyl)propane) is an endocrine-disrupting chemical (EDC) capable of interfering with the function of sex hormones, insulin, leptin, and thyroxin (Garcı´a-Espin˜eira et al. 2018). It can also induce immunotoxic, mutagenic, genotoxic,
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Biodegradation
hepatotoxic, teratogenic,
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