The earliest rumor that monosodium glutamate is harmful to health stems from its ingredient: sodium glutamate.

The main component of monosodium glutamate was sodium glutamate, which was discovered by the Japanese in 1908. Although the main production mode of monosodium glutamate is bacterial fermentation now, it was also directly synthesized by the factory half a century ago.

As a result, monosodium glutamate became:

However, this idea is silly and naive.

Whether it is the Food and Drug Administration of the United States (1959), the Food and Agriculture Organization of the United Nations and the WHO (1987), or the Food Science Committee of the European Union (199 1 year) and other organizations, after many experiments and studies, it is considered that monosodium glutamate is classified as a safety category in food classification.

In other words, there is no evidence that monosodium glutamate is harmful to human health.

Therefore, the topic of "whether monosodium glutamate is harmful to health" once again shows that the verification of food safety depends on scientific test results, not just on whether it is "natural" or "green". After all:

The second rumor about "monosodium glutamate is harmful to health" is said to be that heated monosodium glutamate will cause cancer because sodium glutamate will produce sodium pyroglutamate when heated to 120 degrees Celsius, in other words, monosodium glutamate will be put in cooking. If the temperature is high, monosodium glutamate will become sodium pyroglutamate.

It sounds terrible. Heating will cause a chemical reaction!

And then there was nothing, and then ...

Because sodium pyroglutamate is not carcinogenic, you can't label it carcinogenic just because it is produced by chemical reaction. You know, many cosmetics and nutrition products contain this ingredient. Therefore, the rumor that monosodium glutamate is harmful after heating is also untenable. However, after sodium glutamate is heated into sodium pyroglutamate, the "umami" will disappear, which means that the biggest function of monosodium glutamate-refreshing effect will be lost. Therefore, in order to prevent this from happening, it is recommended to put monosodium glutamate in cooking:

As for other rumors that "eating monosodium glutamate will cause hair loss", enjoy monosodium glutamate. If you really eat monosodium glutamate, your hair will fall out, and if you don't eat it, your hair will also fall out.

When it comes to monosodium glutamate, you can't help mentioning chicken essence.

No matter how many chickens appear in the advertisement of chicken essence, chicken essence is really not made of chicken.

It is a kind of compound seasoning, and its main ingredient is the same as monosodium glutamate, or sodium glutamate. The reason why it has a "chicken flavor" is that it also adds salt, nucleotides, sugar and other spices, which is richer than monosodium glutamate.

Of course, some high-quality chicken essence will add chicken powder or other meat extracts, but the amount depends on the manufacturer (and price).

But no matter how it is added, the main component of chicken essence is sodium glutamate, just like monosodium glutamate.

Therefore, chicken essence and monosodium glutamate are essentially the same, and there is no difference between good and bad.

Any food intake should pay attention to a quantity problem.

Although qualified monosodium glutamate and chicken essence will not harm people's health, sodium glutamate still contains sodium.

Yes, it is the same as sodium in salt.

China people's diet structure has always been too much salt intake, which leads to too much sodium intake and brings many health problems.

That is to say, monosodium glutamate chicken essence is harmless, but the amount put in cooking still needs to be controlled.

So after reading this answer, you must never say to everyone:

Dr. clove said monosodium glutamate is harmless. Help yourself!