Fermentation by yeast preparations

Abstract

The fermentation of hexosediphosphate by the hexosephosphatase preparation previously described in presence of co-enzyme and arsenate is inhibited by mono-iodoacetate. The esterification of sugar by yeast juice is inhibited by mono-iodoacetate in concentrations which only slightly inhibit that of glycogen. Arsenate does not accelerate the rate of fermentation by yeast juice in presence of mono-iodoacetate. The rate of liberation of inorganic phosphate during the induction period of zymin fermentation is not accelerated by arsenate, showing that this phosphate does not arise by fermentation of hexosediphosphate.