Washing powder fritters, really?

Fried dough sticks are an indispensable food in China's daily life. They have a unique taste and usually appear on our breakfast table. Perhaps everyone has heard that some black-hearted vendors regard washing powder as the raw material of oil-squeezing strips, which is why the fried fritters are so crisp and attractive. Such rumors are spread by word of mouth in more and more spread, which leads many people to flinch from fried dough sticks. In fact, washing powder can't be used to fry fried dough sticks. Some laboratories have done experiments on this and explained its principle. The main components of washing powder are bleach, surfactant and water softener. Surfactant can really make dough fluffy, which mainly depends on its main component, sodium alkylbenzene sulfonate. It has a strong foaming ability, so it is often used as a foaming agent, which can better expand the washing powder of wet dough. But you can't make the fritters more brittle, because its chemical form will change after high temperature. When the surfactant in dough loses its stable water environment, it breaks the balance, so in high temperature environment, bubbles disappear, but it does not have a fluffy effect, and even makes the taste of fried dough sticks unpleasant. Fried fritters can expand after being fried because some kind of expansion agent, usually alum, is added in them, which is an acidic complex noodle. Baking soda is alkaline when it meets water, and it will react chemically when it is dissolved in water, producing a lot of carbon dioxide and flocculent substances, thus making the dough fluffy. Moreover, this reaction will react quickly at high temperature and produce a large amount of carbon dioxide gas. However, fried dough sticks can not be used for a long time, because the leavening agent contains certain metal elements, which will have a negative impact on the human body and even lead to metal poisoning if ingested in large quantities. Therefore, frying fried dough sticks with washing powder is fake. You can use fried dough sticks with confidence, and you don't have to worry about black-hearted vendors putting down washing powder to save money. This rumor is false.