Studies on Production of Citric Acid by Aspergillus niger in Solid State Fermentation of Peat Mass

摘要

A study was made to apply the solid state fermentation for the production of citric acid using peat mass as a solid substrate supplemented with sucrose, arnmonium nitrate and copper. The effect of different concentration of sucrose, arnmonium nitrateand copper on the production of citric acid was studied. The sucrose and arnmonium nitrate showed high degree of correlation where as copper showed low degree of correlation but did not affect much on production. The production process and concentrationof nutrients are to be found interdependent. The maximum yield was obtained at 100g/kg PM, 20 g/kg PM and 45 pprn/kg PM for sucrose, ammonium nitrate and copper respectively.