Abstract
L-asparaginase production was optimized using isolated Bacillus circulans (MTCC 8574) under solid-state fermentation (SSF) using locally available agricultural waste materials. Among different agricultural materials (red gram husk, bengal gram husk, coconut, and groundnut cake), red gram husk gave the maximum enzyme production. A wide range of SSF parameters were optimized for maximize the production of L-asparaginase. Preliminary studies revealed that incubation temperature, moisture content, inoculum level, glucose, and L-asparagine play a vital role in enzyme yield. The interactive behavior of each of these parameters along with their significance on enzyme yield was analyzed using fractional factorial central composite design (FFCCD). The observed correlation coefficient (R 2) was 0.9714. Only L-asparagine and incubation temperature, were significant in linear and quadratic terms. L-asparaginase yield improved from 780 to 2,322 U/gds which is more than 300% using FFCCD as a means of optimizing conditions.
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M. Hymavathi is thankful for University Grants Commission and T. Sathish and Ch. Subba Rao are thankful for Council of Scientific and Industrial Research, New Delhi for financial support in the form of Senior Research Fellowship.
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Hymavathi, M., Sathish, T., Rao, C.S. et al. Enhancement of L-Asparaginase Production by Isolated Bacillus circulans (MTCC 8574) Using Response Surface Methodology. Appl Biochem Biotechnol 159, 191–198 (2009). https://doi.org/10.1007/s12010-008-8438-2
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DOI: https://doi.org/10.1007/s12010-008-8438-2