Abstract
UNDER the above title we recently showed (J. Chem. Soc., 1927, 200) that when Aspergillus niger is grown on citric acid as sole source of carbon, the formation of acetone, malonic acid, and glyoxylic acid can be demonstrated. The production of citric acid from potassium saccharate and the mould may be detected, under careful control, by Denigés' test and by oxidation to acetone. It appears, therefore, that saccharic acid may possibly be an intermediate product in the formation of citric acid from glucose by Aspergillms niger, as was suggested by Franzen and Schmitt in the case of the citric acid in plants (Berichte Deutschen Chem. Ges., 1925, 58, 222).
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CHALLENGER, F., SUBRAMANIAM, V. & WALKER, T. Formation of Organic Acids from Sugars by Aspergillus niger. Nature 119, 674 (1927). https://doi.org/10.1038/119674a0
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DOI: https://doi.org/10.1038/119674a0
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