Abstract
Considerable quantities of acetone were produced by certain strains of Aerobacillus polymyxa growing anaerobically in a dextrose medium. The presence of acetone was confirmed by formation of the 2,4-dinitrophenylhydrazine derivative. Carbon balances were obtained for both non-acetone-producing and acetone-producing strains of the organism; considerable quantities of several organic acids were also formed. Increased efficiency of nitrogen-aeration resulted in a marked lowering of the butanediol: ethanol ratio and probably is conducive to an increased yield of acetone.
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