Bioproduction of citric acid by Aspergillus oryzae NCIM-944 exposed to 4-hydroxy-7-methoxy-3-phenyl coumarin

The efficacy of 4-hydroxy-7-methoxy-3-phenyl coumarin on bioproduction of citric acid by fungal strains such as Aspergillus fischeri NCIM – 508, Aspergillus foetidus NCIM–510, Aspergillus giganticus NCIM – 568, Aspergillus luchuensis NCIM – 991 and Aspergillus oryzae NCIM - 944 has been assessed. It has been observed that the fungal strain Aspergillus oryzae NCIM - 944 has been found most significant and effective for the citric acid fermentation process. It has been found that the compound, i.e., 4-hydroxy-7-methoxy-3-phenyl coumarin has stimulatory effect on bioproduction of citric acid by Aspergillus oryzae NCIM - 944 and enhances the yield of citric acid to an extent of 18.587% higher in comparison to control fermenter flasks, i.e., 7.715g/100 ml under the optimized conditions.