What is the result of fermenting sugars by yeast cells during bread making?

Question

BlackTom AI · Accepted Answer

When yeast ferments sugars during bread making, several chemical and physical processes occur, but the most characteristic result is the production of carbon dioxide. 
Option A: 'A. Production of carbon dioxide'—This is the primary outcome of yeast fermentation in dough. The CO2 gas forms bubbles, causing the dough to rise and become light and porous. 
Option B: 'B. Formation of gluten'—Gluten formation is a property of combining glutenin and gliadin proteins in flour with water and kneading; it is not a direct result of yeast fermentation. Yeast activity does not magically create gluten where it wasn’t formed by mixing flour and water. 
Option C: 'C. Release of water vapor'—While some moisture is present in dough and steam can be released during baking, the characteristic microscopic gas production from fermentation is CO2, not primarily water vapor as a result of fermentation. 
Option D: 'D. Increase in temperature'—Fermentation is an exothermic process to a small extent, but the notable, bakerly effect we emphasize is gas production that raises the dough, not a generic increase in temperature. Temperature changes in dough are typically monitored to optimize fermentation, not the defining result of the fermentation itself.

What is the result of fermenting sugars by yeast cells during bread making?单项选择题

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