An efficacious degradation of pesticide by salt tolerant Streptomyces venezuelae ACT 1

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• 作者：Balakrishnan Naveena ; Gurusamy Annalakshmi ; Nagarajan Partha ; ^{npartha.act@gmail.com}
• 关键词：Organophosphorus pesticide ; P0/X0 ratio ; Substrate assimilation ; Substrate inhibition ; Streptomyces venezuelae ACT1
• 刊名：Bioresource Technology
• 出版年：2013
• 出版时间：March, 2013
• 年：2013
• 卷：132
• 期：Complete
• 页码：378-382
• 全文大小：578 K

文摘

Degradation of the organophosphorus pesticide has been studied using the marine isolate, Streptomyces venezuelae ACT1. The organism exhibited a specific growth rate of 0.371 h^?1 and the organophosphorus hydrolase activity rate as 0.273 h^?1. Hence the organism was found to be very effective towards the pesticide degradation. Further the substrate assimilation and inhibition model of the organism were demonstrated using Monod and Haldane model equations which depicted that the inhibition model fits well for both the cell growth and enzyme activity. The maximum specific growth rate and the enzyme activity rate were found to be 0.571 h^?1 and 0.472 h^?1, respectively. Effect of P₀/X₀ ratio on degradation and COD reduction rate revealed that higher these ratios raise the degradation rate and the COD reduction rate.