We may here notice the frequent production of glucose by the action of enzymes upon other carbohydrates.
Traube (1858), the active cause of fermentation is due to the action of different enzymes contained in yeast and not to the yeast cell itself.
Proteolytic Enzymes Catalase .
Not only so, the isolation of the cells facilitates the exchange of liquids and gases, the passage in of food materials and out of enzymes and products of metabolism, and thus each unit of protoplasm obtains opportunities of immediate action, the results of which are removed with equal.
We cannot as yet speak definitely with regard to the part played by enzymes in these toxic processes.