蓖麻碱降解菌的选育及脱毒效果的研究

Isolation of Ricinine Degrading Strain and its Detoxicating Propecting

摘要:

以蓖麻碱为底物,从牛瘤胃液中选育出脱毒能力强、生长旺盛的菌株4-2w,经初步鉴定为假单胞菌(pseydomonas sp．),其最适生长温度为36℃,最适pH为7．0。经脱毒实验,4-2w菌降解蓖麻碱的脱除率达到90%以上,且该菌株未降解其中的蛋白质。

关键词:蓖麻饼粕; 蓖麻碱; 生物降解; 饲料

Abstract:

The strain 4-2w was isolated from the cattles's gastric juice by enrichment culture with ricinine as a substrate.This strain was identi- fied as pseudomonas sp.4-2w according to its characteristics of physiology and biochemistry.The optimal growing temperature and pH were 36℃and 7.0,respectively.The rate of detoxification was more than 90%.And this bacterium did not use up protein of castor bean meal.

Key words:Castor bean meal; Ricinine; Biogradation; Forage