alexa Production of alpha amylase by Bacillus licheniformis using an economical medium.
Chemical Engineering

Chemical Engineering

Journal of Bioprocessing & Biotechniques

Author(s): IkramulHaq, Ashraf H, Iqbal J, Qadeer MA, IkramulHaq, Ashraf H, Iqbal J, Qadeer MA

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Abstract The present study is concerned with the selection of new medium for the production of alpha amylase by Bacillus licheniformis. Different agricultural by-products such as wheat bran, sunflower meal, cotton seed meal, soybean meal, rice husk or rice bran were tested for the production of alpha amylase. Among different agricultural by-products evaluated, wheat bran was found to be the best basal and standardized medium for optimal production of alpha amylase. The production was increased 2-folds when soluble starch was replaced with pearl millet starch at 1\% level and nutrient broth concentrations was reduced from 1\% level to 0.5\%. The newly selected fermentation medium containing (\% w/v) wheat bran 1.25, nutrient broth 0.5, pearl millet starch 1.0, lactose 0.5, NaCl 0.5, CaCl2 0.2 in 100 ml of phosphate buffer. The kinetic values of Y(p/x), Y(p/s), and Q(p) indicated that the production of enzyme was greater in newly selected medium than the conventional more expensive medium.
This article was published in Bioresour Technol and referenced in Journal of Bioprocessing & Biotechniques

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