Microbial strain W, enzyme composition obtainable from the microorganism, method for enzymatically hydrolyzing proteins, and method for hydrolyzing peptides

摘要

PCT No. PCT/EP93/00569 Sec. 371 Date Nov. 2, 1994 Sec. 102(e) Date Nov. 2, 1994 PCT Filed Mar. 12, 1993 PCT Pub. No. WO93/18134 PCT Pub. Date Sep. 16, 1993An enzyme composition containing keratinase is obtained from Fervidobacterium pennavorans DSM 7003. The composition is capable of degradating keratin-containing substrates such as feathers, hair and horn within a few days at between 50 DEG and 105 DEG C. and at a pH of between 4 and 12 under anaerobic conditions. A pH of 10.5 and a temperature of 70 DEG C. or greater are preferred. Dissolving of the substrate can be at least 50% by weight after 24 hours, and in 1 to 4 days the entire substrate can be dissolved. Pretreatment of the substrate at a temperature of 120 DEG C. or greater is not required.