By fermentation, yeast converts carbohydrates to carbon dioxide and alcohol. Yeast has been used in baking for centuries as well as alcohol making.
Yeast releases carbon dioxide.
Carbon dioxide
Carbon Dioxide CO2
Bread contains a leavening agent. This is usually in the form of yeast. Yeast are living microorganisms that contain a type of gas. During baking, the yeast dies and releases gas. This causes the bread to rise and become light.
sugar helps the most
The yeast, during the fermentation, creates a gas. This gas forces the bread to rise, marking the difference between flatbreads and the usual bread that many enjoy in loaves.
Yeast consumes sugar and expels gas. It is this gas that causes bread to rise. Yeast also consumes sugar and produces alcohol during fermentation. So, if you're trying to make wine and there is no yeast on the grapes, and you don't add any, there is no fermentation.
you can not measure gas of yeast
Yeast floats on top of wine during fermentation due to the release of carbon dioxide gas, which creates buoyancy and causes the yeast to rise to the surface.
Yeasts give off gas as they consume and digest sugars. The bubbles of gas become trapped in the dough, causing the product to rise.
The gas released by yeast, CO2, creates bubbles, as the bubbles expand in the dough, the bread rises. As the bread bakes, the bubbles set and give the bread its light, airiness.
The gas produced by yeast during the fermentation process when bread rises is carbon dioxide. As yeast metabolizes sugars, it releases carbon dioxide and alcohol, causing the dough to expand and rise. This gas creates the characteristic airy texture of the bread.