Semi-pilot scale studies on citric acid fermentation by a gamma-ray induced mutant of Aspergillus niger |
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Authors: | M. S. Islam R. Begum N. Choudhury |
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Affiliation: | (1) Division of Genetics, Institute of Food and Radiation Biology Bangladesh Atomic Energy Commission AERE, G.P.O. Box 3787, Dhaka, Bangladesh |
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Abstract: | Summary Semi-pilot scale production of citric acid was investigated with a gamma-ray induced mutant (HB3) of Aspergillus niger using 500, 1000 and 1500 ml medium in 51 fermentation jars. Yield of citric acid was found to be seven-fold higher compared to the parent in 1000 ml medium and the corresponding increase was two-fold in the 500 ml medium. With 1500 ml/fermentation jar the yield was low with both the parent and the mutant strain though the mutant gave higher yield compared to the parent. |
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