Mycological production of citric and oxalic acids from cane molasses. I.—Effects of some cultural conditions and supplements of ferrocyanide and phosphate

Studies are made of the effects of the following factors influencing the biosynthesis of citric and oxalic acids from cane molasses in surface cultures of some strains of Aspergillus niger, (i) cultural conditions, (ii) presence of ferrocyanide and phosphate supplements either separately or together. The organic acids biosynthesised under such conditions were characterised by one‐dimensional paper chromatography. The results are discussed in relation to the findings of previous workers and the metabolic activities of the organisms.