2, fermentation is different: baking powder is chemical fermentation, baking powder has baking soda and tartaric acid, when the water is hot to produce carbon dioxide; yeast is a biological fermentation, yeast is relying on yeast to produce carbon dioxide.
3, different uses: baking powder is usually used in baking cakes, cookies, and desserts, while the yeast is mainly used for baking bread.
4, the rise of the role of different times: baking powder rise quickly; and yeast made of yeast flour rise slowly.
5, the degree of influence by the environment is different: baking powder by the temperature and humidity has little effect; yeast flour rise needs a certain temperature and humidity with, if the weather is cold, it will take more time to rise or not easy to rise.
6, the price is different: the price of baking powder is low; and the price of yeast is higher.
7, health and safety are different: baking powder is a chemical fluffing agent, is composed of chemicals, it is recommended to minimize the use of children and pregnant women at home; and relatively speaking, the yeast is natural, nutritious, healthy, high security, will not produce bad flavor.