酒曲根霉的诱变育种  

The Mutagenesis Of Rhizopus

作　　者：喻凤香[1] 陈煦[1] 林亲录[1] 李珂[1] 杨熠[1] 李菁[1] 

机构地区：[1]湖南农业大学,湖南长沙410128

出　　处：《酿酒》2006年第1期48-50,共3页Liquor Making

摘　　要：本试验对根霉RA-1菌株进行NaNO2诱变和紫外线诱变,得到一株低聚糖酶活力较高的菌株,酶活力达到4360(U/g干曲),比出发菌株提高403.7%,液化酶比出发菌株提高到486.2%,达到1953(U/g干曲),糖化酶提高到出发菌株的567.8%,达到2.55×105(U/g干曲),将该菌株进行斜面传代,产酶稳定。After mutagenesis by ultraviolet and NAN02, we gained one strain with 403.75 higher oligosacchridase ,486.2% higheraamylase, 467.8% higher glucoamylase than the original one .The sweetricewine with this strain can yield more maltooligosaccharides, that is 129.2mg per gram sticky rice,275.5% higher than the original one, mahotriose content is 38.9% ,294,7% higher than the original one,

关 键 词：根霉 低聚糖酶 糖化酶 酒曲 诱变育种 

分 类 号：TS261.11[轻工技术与工程—发酵工程] Q933[轻工技术与工程—食品科学与工程]