Bacterial degradation of acrylic oligomers and polymers

✍ Scribed by Fusako Kawai

• Book ID: 104657888
• Publisher: Springer
• Year: 1993
• Tongue: English
• Weight: 422 KB
• Volume: 39
• Category: Article
• ISSN: 1432-0614
• DOI: 10.1007/bf00192097

✦ Synopsis

Three bacterial strains that assimilate acrylic trimer as a carbon and energy source were isolated from activated sludge and soil samples and were tentatively identified as Microbacterium sp. II-7-12, Xanthomonas maltophilia W1 and Acinetobacter genospecies 11 W2. They could assimilate acrylic monomer, dimer and trimer, but not polymers. Trimer, 0.2°70, was completely consumed in 3 days. The culture filtrate became alkaline during bacterial growth. From the values of biological 02 consumption versus theoretical 02 consumption towards oligomers and polymers, biodegradation of acrylic polymers by trimer-utilizing bacteria was suggested. The resting ceils of three bacteria grown on trimer degraded acrylic polymers (average relative molecular mass of 1000-4500) at a concentration of 100ppm (0.01%). The biodegradation rate of acrylic polymer by resting cells was calculated to be approximately 1/120 of that of acrylic trimer. Acyl-CoA synthetase activities towards oligomeric or polymeric acrylates were found with cell-free extracts of the three bacteria.