What process involves yeast converting sugar into carbon dioxide and alcohol?

What process involves yeast converting sugar into carbon dioxide and alcohol?

• A. Fermentation
• B. Leavening
• C. Proofing
• D. Mixing

Answer: (A)

The process where yeast converts sugar into carbon dioxide and alcohol is known as fermentation. This biological process is crucial in baking, particularly in bread-making, as the carbon dioxide produced causes the dough to rise, creating a light and airy texture. During fermentation, the yeast metabolizes the sugars present in the dough, which not only generates carbon dioxide but also contributes to flavor development through the production of alcohol and other byproducts.

Leavening refers more broadly to the action of adding ingredients, like yeast or baking soda, that create gas bubbles to help the baked goods rise, but it does not specifically define the transformation process itself. Proofing is a step during bread-making that involves allowing the dough to rest and rise, often after shaping. Mixing is the process of combining ingredients together, which is an essential step in making dough but does not involve the biological action of yeast. Thus, fermentation is the only term that specifically describes the biochemical process of yeast converting sugar into carbon dioxide and alcohol.