As long as the normal dosage, eat the buns made with baking powder fermentation is harmless to the human body, baking powder itself is edible food additives, is also legal.

1, baking powder products are now the implementation of the national standard GB25591-2010 "food additives compound puffing agent".

2, baking powder is a compound puffing agent, from baking soda to add acidic materials, and cornstarch as filler made of white powder, also known as baking powder and baking powder. Baking powder is a kind of pastry puffing agent, often used in cake and pastry production. It is mainly used for the rapid fermentation of grain products. In the production of cakes, cakes, buns, steamed buns, shortbread, bread and other food in large quantities.

You don't have to use baking powder to make steamed buns, but you can use other alternatives, such as yeast, soda and so on. These two additives are better than baking powder steamed buns.

When baking powder comes into contact with water, the acidic and alkaline powders dissolve in the water and react at the same time, and part of the baking powder will start to release carbon dioxide (CO?), and at the same time in the baking and heating process, it will release more gases, and these gases will make the product to achieve the effect of expanding and fluffy.

Source Baidu Baking Powder