Influence of ~(60)Co-γ Irradiation on Enzymatic Hydrolysis Effect of Straw

Using different doses of 60Co-γ to irradiation straw for pretreatment,then the enzymatic hydrolysis was conducted to pretreated straw.The results showed that in comparison with control,after enzymatic hydrolysis of 400,800,1 200,1 600 and 2 000 kGy of 60Co-γ pretreated straw for 96 h,the enzymatic digestibility increased by 1.5,2.2,3.0,3.1 and 2.6 times,respectively.A certain dose of 60Co-γ irradiation can reduce the contents of cellulose and hemicellulose in straw and destroy microcosmic physical structure of straw,thereby influencing the enzymatic digestibility of straw.