Leading Words: Most people like to buy fresh, green vegetables and cook them freshly. They think that the dishes are good for human health. But eating too fresh vegetables can also cause trouble. Because just picked vegetables, often with a variety of harmful substances.
The more "fresh" these foods are, the worse they are.
Nowadays, in the production of crops, large quantities of chemical fertilizers and other organic fertilizers are used. In particular, various pesticides are often used to control pests and diseases, and pesticides are sometimes sprayed on vegetables even one or two days before picking. These fertilizers and pesticides are often Harmful to humans.
Freshness does not necessarily mean more nutrition
Scientists have found that the nutritional content of most vegetables after a week of storage is almost the same as when they were just picked.
According to a professor of food science in the United States, after a week of storage of tomatoes, potatoes, and cauliflowers, the vitamin C they contain has declined, while cabbage, melons, green peppers, and spinach have almost no vitamin C levels after storage for one week. Variety. The refrigerated cabbage contains even more vitamin C than fresh cabbage. Therefore, in life, we must not neglect the possible harmful substances in order to simply pursue the freshness of vegetables.
For fresh vegetables, we should store it for a certain period of time, so that after the residual harmful substances gradually decompose and weaken and then eat too late; and for those vegetables that are prone to decline, they should be cleaned and eaten again.
In addition, the fresh foods listed below have many adverse effects.
Fresh tea leaves
From a nutritional point of view, the freshest tea is not necessarily the best nutrient. Because the so-called new tea refers to tea that has been harvested for less than a month. Because these tea leaves have not been placed for a period of time, some substances that adversely affect the body, such as polyphenols, alcohols, and aldehydes, have not been completely Oxidation.
If you drink a new tea for a long time, you may experience uncomfortable reactions such as diarrhea treatment and abdominal distention. Too fresh tea is even worse for menopausal patients. Some people with stomach acid deficiency, or elderly patients with chronic gastric ulcers and hepatitis B, are less suitable for drinking new tea. New tea will stimulate their gastric mucosa, produce drug gastrointestinal discomfort, and even worsen the condition.
Fresh jellyfish
Jellyfish contains various kinds of toxic amines such as serotonin and histamine and toxic peptide proteins. After eating, people easily cause symptoms of abdominal pain, vomiting and other symptoms of poisoning.
Therefore, fresh sea bream should not be eaten. It must be immersed in salt and sea bream repeatedly to remove water and toxic mucin before consumption.
Fresh pickles
Fresh vegetables contain a certain amount of non-toxic nitrate, which is reduced to toxic nitrite during salting. Under normal circumstances, nitrite began to increase significantly after being salted for 4 hours, peaked at 14 to 20 days, and then gradually decreased. Therefore, either eat pickles within 4 hours or you should eat more than 30 days. Nitrite can cause hypoxic symptoms such as bruising, and it can also combine with secondary amines in foods to form carcinogenic nitrosamines.
Radian Plus Laser Tracker,Laser Tracker Data,Accuracy Measurement Laser Tracker,Adaptive Control Laser Tracker
Automated Precision Inc. , https://www.apiasean.com