Factors affecting production of citric acid by saccharomycopsis lipolytica 70561 using a fermentor as a batch culture technique

ABSTRACT

Factors affecting production of citric acid production [i.e. Nitrogen glucose ratio, aeration and agitation speed] by Saccharomycopsis lipolytica 70561 growing on modified medium No. IV at 28C for 216 hr as a batch culture in the fermentor were studied. The maximum yield of citric acid was obtained using one volume of air per one volume medium per minute at 300 rpm agitation speed and a nitrogen glucose ratio of 0.8 x 10-2. Positive correlations of citric acid production with sugar consumption and yeast density was detected at different levels of aeration