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DERI YURATMOKO
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Biochemistry, Genetics & Molecular Biology Immunology & microbiology Medicine & Pharmacology

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Screening of Proteolytic Enzymes of Streptomyces sp. Local Strain and Their Characterization DERI YURATMOKO; NISA RACHMANIA MUBARIK; ANJA MERYANDINI
Microbiology Indonesia Vol. 1 No. 2 (2007): August 2007
Publisher : Indonesian Society for microbiology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (236.721 KB) | DOI: 10.5454/mi.1.2.5

Abstract

Protease of two Streptomyces sp. strain were chosen for characterization because of the large clear zone surrounding the colony in nutrient agar media containing 1% (w/v) skim milk. Extracellular protease from the two isolates SLW 8-1 and 45I-3 were characterized following incubation of the isolate in Nutrient Broth media containing skim milk or chicken feather (1%). The optimum activity of the protease SLW 8-1 was at pH 9 and 80 ºC, whereas that of the keratinase was at pH 6.5 and 70 +C. Protease of strain 45I-3 showed its optimum activity at pH 7.5 and 50 ºC whereas the keratinase was at pH 8.5 and 80 ºC.
Co-Authors Anja Meryandini NISA RACHMANIA MUBARIK