Yeast is made up of chemicals. It helps the dough to mature, and creates conditions for the dough to expand to the maximum during the forming operation, final proofing and baking. Yeast can produce a variety of complex chemical aromatic substances in the fermentation process, which enhances the unique flavor of bread.

Yeast can also increase the spreading of gluten, so that the carbon dioxide produced in the fermentation process can remain in the dough and improve the air holding capacity of the dough, which is not the case if chemical loosening agents are used. There is also a strong antioxidant in yeast, which can protect the liver and have a certain detoxification effect.

Extended data;

Use of yeast;

Active yeast is a kind of "living" nutrient, which contains extremely rich active substances and has a good effect on skin repair and regeneration. Because live yeast has its own life characteristics, it will die if the temperature is too high, which requires a high storage environment. Moreover, the life cycle of live yeast is short and the production cost is expensive, so Dolly is used to make high-nutrition regenerated skin care products.

Yeast is mainly distributed in acidic environment with high sugar content in natural environment, such as nectar, fruit and vegetable surface, orchard soil, winery site and so on.

The scientific explanation of fermentation is simple, that is, yeast eats sugar. After eating sugar, yeast will excrete two things, alcohol and carbon dioxide. It can be said that it seems easy for winemakers to brew wine, as long as the alcohol content is adjusted after brewing and then bottled.

Reference source; Baidu Encyclopedia-Yeast