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Research Article

Production and Some Properties of Protease Produced by Bacillus licheniformis Isolated from Tihamet Aseer, Saudi Arabia

Al- Shehri, M. Abdulrahman and Mostafa S. Yasser
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Culture conditions affecting protease production by Bacillus licheniformis isolated from Tihamet Aseer, Saudi Arabia were investigated. The bacterium strain gave a maximum protease production of 221 U mL-1 when growing in a casein broth medium after 36 h compared with gelatin broth medium. Optimum pH and temperature of protease production were 8 and 50°C, respectively. The highest level of protease production in the presence of soybean meal as a carbon source and the peptone as a nitrogen source was obtained. The protease was optimally active at pH 9 and 55°C . The enzyme was stable at temperature range of 60-65°C during the period tested (1h) and retaining more than 85% of its activity at 70°C. These properties make the enzyme suitable for detergent industry.

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  How to cite this article:

Al- Shehri, M. Abdulrahman and Mostafa S. Yasser , 2004. Production and Some Properties of Protease Produced by Bacillus licheniformis Isolated from Tihamet Aseer, Saudi Arabia. Pakistan Journal of Biological Sciences, 7: 1631-1635.

DOI: 10.3923/pjbs.2004.1631.1635


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