Although it is extremely unlikely to add borax to cold noodles, food science experts pointed out that it cannot be completely ruled out that some vendors will abuse borax to improve the taste of cold noodles. The taste of food added with borax is not easy to identify, and it is difficult for consumers to distinguish. The sampling results of food hygiene supervision departments in many places across the country show that some merchants did add borax to the cold noodles, but most of the ingredients in the cold noodles were fine. Because the raw materials of roadside stalls are difficult to trace, and the sanitary conditions are not up to standard, Yikong Pu advises consumers to eat less or not to eat roadside food for the sake of health. Grilled cold noodles are roadside snacks, which are cheap and delicious. However, there are rumors that the "ribs" of roasted cold noodles are due to the addition of borax. According to an article entitled "People who bake cold noodles are beaten 100 guns will not feel revenge", it caused a heated discussion on the Internet. Through the analysis and judgment of burning, soaking and gluten components, it is questioned that raw noodles contain borax.

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So, what is borax?

Borax is a soft and light colorless crystalline substance, which is widely used and plays an important role in industrial production. It is reported that vendors will illegally add borax to food to increase the toughness, brittleness, water retention and shelf life of food, and play a role in preserving and improving flour.

Eating borax is harmful to human health.

Borax can react with gastric acid to produce boric acid after food intake. Boric acid is accumulative, which will accumulate in the body after continuous intake, affecting the function of digestive enzymes, leading to loss of appetite and indigestion, inhibiting the absorption of nutrients, and in severe cases, irritating the stomach, causing nausea, vomiting, diarrhea and other symptoms.

Borax is very harmful, so the state explicitly prohibits the use of toxic substances in food. The Ministry of Health issued the List of Non-edible Substances that May be Illegally Added in Food (the first batch), which clearly listed borax and boric acid as non-edible substances.