PROTEASE PRODUCTION BY A THERMOPHILIC BACILLUS SPECIES (P-001A) WHICH DEGRADES VARIOUS KINDS OF FIBROUS PROTEINS

被引:69
作者
ATALO, K [1 ]
GASHE, BA [1 ]
机构
[1] UNIV ADDIS ABABA,DEPT BIOL,POB 1176,ADDIS ABABA,ETHIOPIA
关键词
D O I
10.1007/BF00131207
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
An aerobic Gram-positive sporeforming bacterium was isolated from an alkaline hot spring at Wondo Genet, Ethiopia. In an optimized culture medium it produced maximum activity of protease at 55-degrees-C and pH 9.5. The protease activity against casein was 65 units/ml. Enzyme activity was detected between 30-70-degrees-C and pH of 4.5-11.5. The enzyme had a half-life of 55 and 30 min at 60-degrees and 70-degrees-C, respectively. The isolate hydrolysed 90, 60 and 50% of the skin, feather and horn used in the optimized medium within 120 h.
引用
收藏
页码:1151 / 1156
页数:6
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