Biodegradation of linear polyacrylamides by bacteria containing amidase

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Published: Apr 2, 2025
DOI: https://doi.org/10.17072/1994-9952-2025-1-43-48
Keywords:
amidase activity biodegradation polyacrylamides

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Elena M. Protasova
Institute of Ecology and Genetics of Microorganisms, PFRC Ural Branch of the RAS, Perm, Russia

Abstract

The ability of Rhodococcus erythropolis IL BIO and Alcaligenes faecalis 2 bacterial strains with amidase activity to use linear polyacrylamides (PAAs) Praestol 650 BC, 2540 and 2300 D as a source of carbon or nitrogen nutrition was studied. It was determined that bacterial strains used these PAAs at a concentration of 0.1, 0.05 and 0.01% as a nitrogen source for biomass growth. The greatest bacterial growth was observed on the medium with PAA Praestol 2300 D at a concentration of 0.1%. It should be noted that not in all cases did the growth of amidase-containing bacteria correlate with a decrease in polymer viscosity. No growth of A. faecalis 2 was observed on a medium with anionic polymer at a concentration of 0.1% as the only growth substrate and at a concentration of 0.01% as carbon nutrition. Nonionic and cationic PAAs were subjected to more effective microbial degradation than anionic.

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How to Cite
Protasova Е. М. (2025). Biodegradation of linear polyacrylamides by bacteria containing amidase. Bulletin of Perm University. Biology, (1), 43–48. https://doi.org/10.17072/1994-9952-2025-1-43-48
Issue
No. 1 (2025): Bulletin of Perm University. BIOLOGY
Section
Микробиология

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Author Biography

Elena M. Protasova, Institute of Ecology and Genetics of Microorganisms, PFRC Ural Branch of the RAS, Perm, Russia

engineer of the laboratory of molecular biotechnology, graduate of postgraduate studies in the field of training 06.06.01 Biological sciences
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