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Appl Microbiol. 1975 December; 30(6): 889–892.
PMCID: PMC376563

Effect of substrates on acetoin production by Torulopsis colliculosa and Enterobacter species.


Under optimal conditions, Torulopsis colliculosa NRRL 172 and Enterobacter B-87 (ATCC 27613) produced 50 to 500 mg of acetoin per g of substrate. Whereas cane molasses, gur, glucose, and sucrose were suitable substrates for acetoin production, lactose and mannitol supported very good growth but yielded little or no acetoin. Production of acetoin increased with increases in the concentration of glucose, yeast extract, and peptone. Combination of substrates and intermittent feeding of substrate failed to increase the yields.

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