Aerobic degradation of bisphenol A by Achromobacter xylosoxidans strain B-16 isolated from compost leachate of municipal solid waste.
A novel bacterium designated strain B-16 was isolated from the compost leachate of the municipal solid waste (MSW) in a laboratory reactor. This strain was identified as a gram-negative bacterium, Achromobacter xylosoxidans that could grow on bisphenol A (BPA, a representative endocrine disruptor) as a sole carbon source under aerobic condition. BPA-degrading characteristics of strain B-16 were investigated in liquid cultures. The results show that BPA degradation was influenced by several factors (e.g. inoculum size, substrate concentration, temperature and pH, etc). The half-lives, optimum temperature and pH were found to be 0.58-3.1d, 35 degrees C and 7.0, respectively. BPA-degrading activity and cell growth were inhibited at high substrate concentration. Metabolic intermediates detected during the degradation process were identified as p-hydroxybenzaldehyde, p-hydroxybenzoic acid and p-hydroquinone, respectively. Metabolic pathway of BPA degradation was proposed in this study.
Zhang
Chang
C
College of Environmental Science and Engineering, Hunan University, Changsha 410083, PR China.
Zeng
Guangming
G
Yuan
Li
L
Yu
Jian
J
Li
Jianbing
J
Huang
Guohe
G
Xi
Beidou
B
Liu
Hongliang
H
D042441:Achromobacter denitrificans / Q000302:isolation & purification / Q000378:metabolism*; D000332:Aerobiosis; D001559:Benzhydryl Compounds; D001673:Biodegradation, Environmental; D006863:Hydrogen-Ion Concentration; D053858:Metabolic Networks and Pathways; D010636:Phenols / Q000378:metabolism*; D012037:Refuse Disposal / Q000379:methods; D012988:Soil Microbiology; D013696:Temperature; D000098826:Bisphenol A Compounds
D001559:Benzhydryl Compounds; D010636:Phenols; C006780:bisphenol A; D000098826:Bisphenol A Compounds