Many consumers have the psychology of "lust" and "love white", which is used by some unscrupulous traders. Many steamed buns, rolls, steamed buns, vermicelli, tremella and other aquatic foods on the market are all white in color and have good sensory properties. Why does steamed bread become so white and fat? Why do squid and other seafood become so white and plump? Some unscrupulous vendors will add a food whitening agent called carved white block in the production process. The chemical name of carved white block is sodium formaldehyde sulfite, which is decomposed into sulfur dioxide and formaldehyde during food processing. The formaldehyde in steamed bread is different from the decoration materials at home. It enters the mouth directly by chewing steamed bread. Formaldehyde is an internationally recognized carcinogen and teratogenic substance, so formaldehyde directly entering the mouth may be more harmful to the body because it is more direct. Serious results may damage liver and kidney and even cause cancer.

Step 2 bake steamed bread

Don't bake the steamed bread slices too yellow. Snacks made of flour such as biscuits, the darker the color, the higher the acrylamide content, and should be eaten less. The acrylamide content in fried potatoes, barley tea, instant coffee, corn tea, grain fried food and grain baked food is high. At the same time, the content of acrylamide in food depends on food processing and cooking methods, especially food types, frying temperature and time. In addition to French fries and chips, there are some thin and crisp fried cakes with high acrylamide content. Long-term consumption of fried food containing acrylamide, especially for the elderly and children, has poor detoxification ability and is not easy to discharge toxins, which is harmful to the health.

How to choose healthy steamed bread

1, look at the color: this is the first effective way to judge "formaldehyde steamed bread". The color of steamed bread with white blocks is relatively white. Generally speaking, Taibai steamed bread is likely to contain hanging white pieces.

2, steamed stuffed bun: formaldehyde will decompose at high temperature, it will give off a pungent taste, which is a common sense that everyone knows. After high temperature heating, the formaldehyde in steamed bread is likely to evaporate.

3. Smell: After the steamed bread is opened, smell it by the way to see if there is a pungent smell. If there is, it probably contains formaldehyde.

4. Leave it for a few days: formaldehyde is volatile and can be volatilized into the air, so if you buy steamed bread from outside, you can try to leave it for a few days, so the residue may be less.