(1) Starter produces gas through biological fermentation. Yeast is a unicellular fungus, which can survive in aerobic and anaerobic environments and belongs to facultative anaerobic bacteria.

(2) Yeast powder is a kind of compound leavening agent, also known as foaming powder and yeast powder, which reacts with water to produce gas.

2, the use is not the same:

(1) leavening agent is mainly used in the production of baked goods. It can not only improve the sensory quality of food, but also be beneficial to the digestion and absorption of food, which is of great significance in developing convenience food and emphasizing its nutritional function today.

(2) The baking powder is mainly used as a quick loosening agent for flour food. Some kinds of baking powder can be divided into sweet baking powder and edible baking powder, which is a kind of fast starter and is mainly used for the rapid fermentation of grain products. Production of cakes, cakes, steamed bread, steamed bread, shortbread, bread and other foods.

3, different materials: baking powder is actually one of the leavening agents. The leavening agent is mainly made of wheat, which can be decomposed by heat during processing, thus expanding the dough through the generated gas and forming many dense holes; Baking powder is a compound leavening agent, which is a white powder made of baking soda powder, acidic substances and corn flour.