Question

What substance is added to grapes to bring about fermentation

Answer 1

Hola

Yeast is the substance which is added to grapes to bring about fermentation.

It converts it into ethanol and CO2.

It's used for wine making.

Glad to help you
@Nikhita

Answer 2

Let us see about the substance which is added to grapes to bring about fermentation.

Fermentation is process of winemaking. It converts the grape juice into an alcoholic beverage. During Fermentation yeast is added to the grape juice.

Yeast converts the sugar present in the grape juice into ethanol and carbon dioxide. Use of different strains of yeast can result in different varieties of wine even with same grape variety.