The effect of two different inocula on growth and production parameters in citric acid fermentation (on glucose) by Yarrowia lipolytica A-101 was studied. For inoculum prepared in full growth medium the total acids yield was 5-12% higher and biomass yield about 10% higher than for inoculum prepared in a nitrogen-deficient medium. The latter inoculum, however, led to about 10-30% higher acid production and glucosce consumption rates.