Study on Screening and Degradation Character of Degrading Bacterium for Polyvinyl Alcohol

Abstract:

A strain XT11 was isolated from environment, which could degrade polyvinyl alcohol. It belongs to the genus of Pseudomonas sp. The course curve of growth and PVA degradation were discussed. The results showed that 1 g/L of PVA could be completely degraded after 54 h cultivation. The initial pH of fermentation medium, culture temperature and the concentration of yeast extract were also discussed. The results showed that the optimum initial pH, culture temperature and the concentration of yeast extract were 7.0, 30℃ and 0.5 g/L respectively. Effect of the concentration of PVA on PVA degradation was discussed. The results showed that PVA degradation decreased as the concentration of PVA increased.