A STUDY OF SOME FACTORS IN THE CHEMICAL STIMULATION OF THE GROWTH OF ASPERGILLUS NIGER

Abstract

The results obtained in these attempts to effect a still further increase in the yield by the addition of free acid during growth as compared to its addition before inoculation are not conclusive.While experiments 28 and 29 would lead one to suspect that the optimum hydrogen-ion concentration for growth varies during the growth of the organism, experiments 30 and 31 do not seem to bear out this assumption.On the other hand, it must