STUDY of the INFLUENCE of NUTRIENTS on CITRIC ACID PRODUCTION by Aspergillus niger UNDER SOLID STATE FERMENTATION USING RICE CHAFF and SESAMUM OIL CAKE as SUBSTRATE
نویسنده
چکیده
Abstract: The main aim of this study is to investigate about citric acid production by ETGP12 and ETGP18 strains of Aspergillus niger with the inclusion of certain nutrients along with the substrates. The substrates (rice chaff and sesamum oil cake) were fermented in the presence of different nutrients like ammonium carbonate and potassium dihydrogen phosphate at concentrations ranging from 0.1 to 0.5 mg/100g of substrates for a period of 72 and 96 hours and the same were tested even in mixed combinations of nutrients. In both the cases it was observed that these nutrients enhanced the rate of citric acid production initially but at higher concentrations the yield of citric acid is reduced.
منابع مشابه
Citric Acid Production by Aspergillus Niger Etgp12, Etgp18 on Solid State Fermentation and Effect of Initial Temperature on Yield
Citric acid is mainly produced by solid state fermentation by the filamentous fungus Aspergillus niger. Production of citric acid depends strongly on an appropriate strain and on operational conditions such as aeration, type and concentration of carbon source, nitrogen and phosphate limitation, pH, temperature, concentration of trace elements and morphology of the producer organism. The yield o...
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