Biodegradation of bisphenol A and other bisphenols by a gram-negative aerobic bacterium
- General Electric Corp. Research and Development, Schenectady, NY (United States)
- Taiwan Biotech Corp., Taoyun (Taiwan)
A novel bacterium designated strain MV1 was isolated from a sludge enrichmet takes from the wastewater treatment plant at a plastics manufacturing facility and shown to degrade 2,2-bis(4-hydroxyphenyl)propane (4,4[prime]-isopropylidenediphenol or bisphenol A). Strain MV1 is a gram-negative, aerobic bacillus that grows on bisphenol A as a sole source of carbon and energy. Total carbon analysis for bisphenol A degradation demonstrated that 60% of the carbon was mineralized to CO[sub 2], 20% was associated with the bacterial cells, and 20% was converted to soluble organic compounds. Metabolic intermediates detected in the culture medium during growth on bisphenol A were identified as 4-hydroxybenzoic acid, 4-hydroxyacetophenone, 2,2-bis(4-hydroxyphenyl)-1-propanol, and 2,3-bis(4-hydroxyphenyl)-1,2-propanediol. Most of the bisphenol A degraded by strain MV1 is cleaved in some way to form 4-hydroxybenzoic acid and 4-hydroxyacetophenone, which are subsequently mineralized or assimilated into cell carbon. In addition, about 20% of the bisphenol A is hydroxylated to form 2,2-bis(4-hydroxyphenyl)-1-propanol, which is slowly biotransformed to 2,3-bis(4-hydroxyphenyl)-1,2-propanediol. Cells that were grown on bisphenol A degraded a variety of bisphenol alkanes, hydroxylated benzoic acids, and hydroxylated acetophenones during resting-cell assays. Transmission electron microscopy of cells grown on bisphenol A revealed lipid storage granules and intracytoplasmic membranes.
- OSTI ID:
- 6938138
- Journal Information:
- Applied and Environmental Microbiology; (United States), Journal Name: Applied and Environmental Microbiology; (United States) Vol. 58:6; ISSN AEMIDF; ISSN 0099-2240
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AROMATICS
BACILLUS
BACTERIA
BIODEGRADATION
CELL CONSTITUENTS
CELL MEMBRANES
CHEMICAL REACTIONS
DECOMPOSITION
ELECTRON MICROSCOPY
GROWTH
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INDUSTRY
LIPIDS
LIQUID WASTES
MANAGEMENT
MEMBRANES
MICROORGANISMS
MICROSCOPY
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHENOLS
PLASTICS INDUSTRY
PROCESSING
TRANSMISSION ELECTRON MICROSCOPY
WASTE MANAGEMENT
WASTE PROCESSING
WASTE WATER
WASTES
WATER