Degradation of polyvinyl alcohol by <Emphasis Type="Italic">Sphingomonas</Emphasis> sp. SA3 and its symbiote |
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| Authors: | B?C?Kim C?K?Sohn S?K?Lim J?W?Lee Email author" target="_blank">W?ParkEmail author |
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| Institution: | (1) College of Natural Sciences, Kyungpook National University, Department of Microbiology, 702-701, Taegu, Korea,;(2) Taegu 702-702, Kyungsangpook-Do Health and Environmental Institute, 702-701, Taegu, Korea,;(3) University of California, Pulmonary Division, San Francisco 505, CA 94143-0130, USA, |
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| Abstract: | A total of 800 samples was taken from Taegu province, Korea, where many textile factories provide a source of polyvinyl alcohol
(PVA) waste. These samples were screened for PVA-degrading bacteria. A new strain, SA3, was discovered which formed yellow
colonies and used PVA as the sole carbon and energy source. Strain SA3 was identified as a Sphingomonas sp., based on the partial nucleotide sequence analysis of 16S ribosomal RNA, the presence of 2-hydroxymyristic acid (14:O
2-OH) and sphingolipids with d-17:0, d-18:0, d-19:1, and d-20:1 as the main dihydrosphingosines. This genus has not previously
been reported as a PVA-degrading bacterium. Sphingomonas sp. SA3 needs a symbiote strain, SA2, for PVA degradation as a growth factor producer. In mixed cultures of these strains,
the optimum temperature for PVA biodegradation ranged from 30 °C to 35 °C. The optimum pH was 8.0 and the most effective nitrogen
source was NH4
+.
Electronic Publication |
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| Keywords: | Biodegradation Polyvinyl alcohol Sphingomonas sp SA3 Symbiosis |
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