I don't know when it started, and the MSG in the house disappeared. Whenever I want to stir-fry with a little MSG to improve freshness, my mother directly told me that eating too much MSG is easy to cause cancer, stir-frying it will produce toxic substances, and I think so for a long time, after all, who can think of a rumor that can spread for more than ten years.
In fact, MONOSG is a salt, a sodium salt, the main ingredient is sodium glutamate. Many people think that MSG is harmful to the human body, eating msG to lose hair, vision loss, and may even lead to cancer or other internal organ diseases, which is a rumor to spread falsely.
MSG originated from a bowl of kelp soup, a Japanese professor named Kikusho Ikeda in 1908, the dried kelp soup was concentrated, separated, and thus obtained MSG, and then mass-produced in 1909. So the origin of MSG can be said to be very green and healthy.
The Food and Drug Administration of the United States (1959), the Food and Agriculture Organization of the United Nations and the World Health Organization (1987), or the European Union's Food Science Commission (1991) and other organizations have experimented with MSG many times, and the idea that MSG is harmful is pure nonsense.
When the monosodium glutamate sodium is heated at more than 120 ° C, it is easily converted into sodium pyroglutamate. But in fact, MSG is heated for half an hour at 100 ° C, and only 0.3% of sodium glutamate produces sodium pyroglutamate and sodium glutamate does not become a harmful substance, but will lose its original umami taste. Moreover, sodium glutamate, after being ingested by the human body, will be converted into the body's protein components glutamic acid, glutamine and tyrosine.
In layman's terms, MSG is a kind of fresh sodium salt. It is produced by the fermentation of corn, rice, wheat and other food crops, and its production process is not fundamentally different from that of winemaking and vinegar. So you can eat with confidence, of course, you can not overdose, it is still a kind of sodium salt, salt eating too much of course will produce increased blood pressure, headaches and other symptoms.
Supplementing with a little chicken essence is also a kind of monosodium glutamate, but chicken essence belongs to animal high purine foods, and its main components are sodium glutamate and 5'-flavored nucleotide disodium oxide. For patients with chronic diseases such as hypertension, gout, kidney disease, etc., it should be consumed with caution.