Many people think that soy sauce should be black, mistakenly thinking that the darker the better. Actually, this statement is wrong. Good soy sauce should be reddish brown. If poured into a plate, it will glow in the light. If the soy sauce is too dark, it is probably caramelized. By comparing the pictures, we can clearly find that the inferior soy sauce has no luster, and such soy sauce may contain a lot of Escherichia coli, Proteus and so on. If eaten directly, there is a risk of infection.

Is the color of soy sauce the same as that of soy sauce? In terms of color, soy sauce is light in color and reddish brown; The dark color of soy sauce is closer to black. In taste, soy sauce is light and salty. Light soy sauce is generally used to mix cold dishes or to refresh when cooking; When braising in soy sauce, it is usually colored with soy sauce.

How did the color of soy sauce come from? Firstly, tyrosine in soy sauce is oxidized and polymerized into melanin by microbial polyphenol oxidase;

Melanoid formed by chemical reaction between disaccharide and amino acid or protein;

The third kind is caramel when sugar is heated. The above three products make soy sauce produce color.

4 What should I pay attention to when choosing soy sauce? First, you should buy soy sauce with QS/SC logo in regular stores. You should be careful when buying soy sauce in bulk, and don't buy cheap or unclear soy sauce.

Second, we should learn to read food labels carefully and suggest brewing soy sauce. According to the ingredient list on the food label, try to choose non-GMO soy sauce with less food additives such as monosodium glutamate, caramel pigment, disodium 5- inosinate and disodium 5'- flavor nucleotide.

Third, try to use children's soy sauce for children's meals. Children's soy sauce meets their dietary needs of low salt and light mouth, and its main selling points are non-genetically modified and no additives. In addition, pay attention to the production date and shelf life of soy sauce when buying, eat it as soon as possible after opening the lid, and avoid direct sunlight when storing to prevent deterioration caused by improper storage.