PJB-2002-21
CITRIC ACID FERMENTATION BY A UV-TREATED MUTANT OF ASPERGILLUS NIGER
SIKANDER ALI, IKRAM-UL-HAQ AND JAVED IQBAL
DOI:
The production of citric acid of by Aspergillus niger was investigated with wild-type (GCB-1) and UV-treated mutant (UV-6) using 7.5, 9.0 and 10.5 L medium in stirred fermentor. Yield of citric acid was found to be seven-fold higher as compared to the parent in 9.0 L medium and the corresponding increase was two-fold in the 7.5 L medium. With 10.5 L I fermentation, 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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