Degradation of bisphenol A by Bacillus pumilus isolated from kimchi, a traditionally fermented food

Abstract

Novel bisphenol A (BPA)-degrading bacterial strains, designated as BP-2CK, BP-21DK, and BP-22DK, were isolated from kimchi, a traditionally fermented food. These isolates were identified as Bacillus pumilus and efficiently degraded BPA in a medium supplemented with nutrients such as peptone, beef extract, and yeast extract. Strains BP-2CK, BP-21DK, and BP-22DK successfully degraded 25, 25, and 50 ppm of BPA, respectively, and all strains exhibited BPA-degrading activity in the presence of 10% NaCl. Accumulation of the metabolites including 4-hydroxyacetophenone, one of the intermediates produced by the other BPA-degrading bacteria, was not observed in BPA degradation by the isolated strains. These results indicate that the isolated food-derived bacteria are applicable for the construction of efficient and safer systems for the removal of BPA.

Bacteria-mediated bisphenol A degradation

“…The most prevalent grampositive BPA-degrading bacteria were Bacillus sp. Three Bacillus pumilus strains BP-2CK, BP-21DK, and BP-22DK were isolated from kimchi, a traditionally fermented food, by Yamanaka et al (2007). The three B. pumilus strains efficiently degraded 10 mg/l BPA within 20-40 h, in media supplemented with nutrients.…”

Biodegradation and detoxification of bisphenol A with one newly-isolated strain Bacillus sp. GZB: Kinetics, mechanism and estrogenic transition

“…Up until now, most BPA degradation studies were mainly focused on the oxidation reaction including photodegradation (Nomiyama et al, 2007;Ohko et al, 2001) and biodegradation (Kolvenbach et al, 2007;Yamanaka et al, 2007;Yim et al, 2003). The organisms such as fungi (Kabiersch et al, 2011), plant-cultured cells (Saiyood et al, 2010) as well as bacteria (Kang and Kondo, 2002a,b;Lobos et al, 1992;Yamanaka et al, 2007) can all be used as biocatalysts for BPA biodegradation.…”

Concurrent degradation of tetrabromobisphenol A by Ochrobactrum sp. T under aerobic condition and estrogenic transition during these processes

“…4), and this course may consume the oxygen and also provide the electrons for reductive debromination of TBBPA. Therefore, the biodegradation could be enhanced to some extent which could explain the rapid reaction before 24 h. With the further increase of the degradation time, more BPA was accumulated and high BPA concentration may inactivate the strain, and subsequently will decrease the degradation efficiency of TBBPA as reported by some BPA biodegradation studies (Yamanaka et al, 2007;Zhang et al, 2007).…”