The Equation of Alcoholic Fermentation

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Abstract
The fact that the hexosediphosphate produced by action of yeast preparations on a mixture of a hexose and a phosphate is accompanied by a monophosphate makes it necessary to reconsider the equation originally proposed by Harden and Young. The amounts of CO2, hexosemonophosphate, and hexosediphosphate produced were determined. The ratio CO2/total P esterified averaged 0.9, indicating that if the original equation is correct, about 10% of the P is esterifed without evolution of CO2, the product probably being a monophosphate. The ratio CO2/diphosphate was a little over 2, the value required by the original equation, suggesting that the diphosphate may be produced in accordance with the equation, but that a part of it is subsequently partially hydrolyzed, with formation of a monophosphate. The ratios C02/monophosphate and monophosphate/diphosphate were variable.

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