摘要
从土壤及霉变淀粉质等样品中分离出对生淀粉具有降解作用的菌种约 6 0株 ,其中生淀粉糖化酶最高的一株根霉OR 1 ,其酶活为 90U/mL ,通过一次紫外和亚硝基胍诱变 ,酶活分别达到 2 0 0U/mL、 3 2 5U/mL ,RDA值分别为 70 %、 6 5 %。诱变株是一株产生淀粉糖化酶较高的根霉。
strains that could produce raw starch-digesting glucoamylase were isolated from soil and mildewed rice.The highest raw starch-digesting glucoamylase activity strain named OR-1 was identified as Rhizopus.sp.The raw starch-digesting glucoamylase activity of the strain is 90U/mL.Through UV and NTG mutagenesis,the raw starch-digesting glucoamylase activity raised to 200U/mL and 325U/mL respectively.The RDA were 70% and 65% respectively.
出处
《微生物学通报》
CAS
CSCD
北大核心
2001年第6期60-64,共5页
Microbiology China
