PRODUCTION OF EXTRACELLULAR PROTEASE AND DETERMINATION OF OPTIMAL CONDITION BY BACILLUS LICHENIFORMIS BBRC 100053 (RESEARCH NOTE)

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GHOBADINEZHAD Z.; YAGHMAEI S.; HAJHOSSEINI R.

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Paper Information

Journal: INTERNATIONAL JOURNAL OF ENGINEERING Year:2009 | Volume:22 | Issue:(3 TRANSACTIONS B: APPLICATION) Page(s): 221-228

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Title

PRODUCTION OF EXTRACELLULAR PROTEASE AND DETERMINATION OF OPTIMAL CONDITION BY BACILLUS LICHENIFORMIS BBRC 100053 (RESEARCH NOTE)

Author(s)

GHOBADINEZHAD Z. | YAGHMAEI S. | HAJHOSSEINI R. | Issue Writer Certificate

Keywords

PROTEASE

BACILLUS LICHENIFORMIS

THERMO STABLE PROTEASE

ENZYME

PTIMIZATION

Abstract

The production of PROTEASE by BACILLUS LICHENIFORMIS BBRC 100053 was studied. The most appropriate medium for the growth and PROTEASE production is composed of: lactose 1%, yeast extract 0.5%, peptone 0.5%, KH2PO4 0.1%, MgSO4.7H2O 0.02%. ENZYME production corresponded with growth and reached a maximums level (589 U/ml) during the stationary phase at 35oC, pH equivalent to 10 and with 150 rpm after 73 hours. PROTEASE activity was highest at pH 8 and 45oC. The best carbon sources are respectively lactose and maltose and the best nitrogen source is peptone. The PROTEASE was highly active and stable from pH 7.0 to 11.0 with an optimum at pH 7-8. Thermo stability of the ENZYME was considered in the presence and absence of 2mM CaCl2. ENZYME is non stable at temperatures higher than 50oC while the thermal stability was enhanced in the presence of Ca2+. The ENZYME retained 15 and 8% of its initial activity after heating for 60min at 60oC in the presence and absence of 2mM CaCl2, respectively and retained 7 and 3% of at 70oC in the presence and absence of 2mM CaCl2.

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APA: Copy

GHOBADINEZHAD, Z., YAGHMAEI, S., & HAJHOSSEINI, R.. (2009). PRODUCTION OF EXTRACELLULAR PROTEASE AND DETERMINATION OF OPTIMAL CONDITION BY BACILLUS LICHENIFORMIS BBRC 100053 (RESEARCH NOTE). INTERNATIONAL JOURNAL OF ENGINEERING, 22((3 TRANSACTIONS B: APPLICATION)), 221-228. SID. https://sid.ir/paper/563950/en

Vancouver: Copy

GHOBADINEZHAD Z., YAGHMAEI S., HAJHOSSEINI R.. PRODUCTION OF EXTRACELLULAR PROTEASE AND DETERMINATION OF OPTIMAL CONDITION BY BACILLUS LICHENIFORMIS BBRC 100053 (RESEARCH NOTE). INTERNATIONAL JOURNAL OF ENGINEERING[Internet]. 2009;22((3 TRANSACTIONS B: APPLICATION)):221-228. Available from: https://sid.ir/paper/563950/en

IEEE: Copy

Z. GHOBADINEZHAD, S. YAGHMAEI, and R. HAJHOSSEINI, “PRODUCTION OF EXTRACELLULAR PROTEASE AND DETERMINATION OF OPTIMAL CONDITION BY BACILLUS LICHENIFORMIS BBRC 100053 (RESEARCH NOTE),” INTERNATIONAL JOURNAL OF ENGINEERING, vol. 22, no. (3 TRANSACTIONS B: APPLICATION), pp. 221–228, 2009, [Online]. Available: https://sid.ir/paper/563950/en

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