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All Journal JURNAL TEKNOLOGI LINGKUNGAN Media Penelitian dan Pengembangan Kesehatan
Setianingrum, Ninu
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Decision Sciences, Operations Research & Management Environmental Science Public Health

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KEMAMPUAN BACILLUS LICHENIFORMIS DALAM MEMPRODUKSI ENZIM PROTEASE YANG BERSIFAT ALKALIN DAN TERMOFILIK Soeka, Yati Sudaryati; Rahayu, Sri Hartin; Setianingrum, Ninu; Naiola, Elidar
Media Penelitian dan Pengembangan Kesehatan Vol 21, No 2 Jun (2011)
Publisher : Badan Penelitian dan Pengembangan Kesehatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22435/mpk.v21i2 Jun.109.

Abstract

The aim of the research was to measure the production of protease enzyme in alkaline and thermophilic of bacteria Bacillus licheniformis. The protease enzyme signed by clear zone arround the bacteria colonies on medium which contain 1% skimmed milk. The activities of protease enzyme treated  by the period of incubation, temperature and pH, which measured by spectrophotometer at ? 280 nm. The results showed that the highest production of protease activity at 2 days incubation was 150,52 U/mL. At temperature 50°C and pH 10 they were 123,34  U/mL and 193,14 U/mL.
AKTIVITAS AKTINOMISETES DARI BANGKA-BELITUNG KOLEKSI BIDANG MIKROBIOLOGI, PUSLIT BIOLOGI- LIPI DALAM MEMPRODUKSI ENZIM KITINASE Soeka, yati Sudaryati; Triana, Evi; Setianingrum, Ninu
Jurnal Teknologi Lingkungan Vol. 11 No. 3 (2010)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (431.075 KB) | DOI: 10.29122/jtl.v11i3.1187

Abstract

The aim of the research was to know the capability of actinomycetes isolate from Bangka Belitung, which stored at Microbiology-LIPI Culture Collection, in producing chitinase enzyme. This isolate which could produce chitinolitic enzyme, signed by clear zone at medium contain 1% chitine. The chitinase activity of the isolate which incubated for 1-7 days in the room temperature was analyzed by spectrophotometer in λ 584 nm. The result of this experiment was highest chitinase activities with incubated for 3 days, were 1.66 . 10-2 U/ml. Maximum chitinase activities was found at 1% starch soluble substrate 2.83 . 10-2, pH 8.0 and at 50°C condition were 9.3 . 10-2 and 12.98 .10-2 U/ml respectively.Key words : chitinase, clear zone, spectrophotometer
Co-Authors Evi Triana Naiola, Elidar Rahayu, Sri Hartin Yati Sudaryati Soeka