Chinese toon sprouts should be eaten early, fresh and tender before grain rain; after grain rain, its dietary fiber is aging, taste boring and nutritional value will be greatly reduced. This year's Guyu is April 20, which is the best time to eat spring famous Chinese toon. However, improper consumption of Toona sinensis can easily lead to food poisoning, so Xiaobian summarizes the five principles of Toona sinensis consumption.
Many people point out that Toona sinensis contains nitrate and nitrite, which is much higher than that of ordinary vegetables; the protein content of Toona sinensis is higher than that of ordinary vegetables, and there is a risk of carcinogenic nitrosamines, so it has a potential safety hazard to eat Toona sinensis. So, how to eat safe and nutritious Toona sinensis? We might as well follow the following principles:
First, choose the softest Chinese toon bud. The nitrate content of Toona sinensis was low at the initial stage of germination, and increased with the growth of Toona sinensis buds. After the middle of April, the nitrate content of Toona sinensis sprouts in most areas exceeded the standards of who and FAO. In other words, the softer the Toona sprouts are, the less nitrate they contain, and the less nitrite they will produce in future storage.
Second, choose the freshest Chinese toon buds. Fresh toon sprouts picked from trees are safe to eat immediately, while the content of nitrite in toon sprouts purchased from the market will increase greatly because of the transportation process. If it's time for the leaves to fall off, it's bound to produce a lot of nitrite.
Third, blanch to remove nitrate and nitrite. Blanching in boiling water for about 1 minute can remove more than two-thirds of nitrite and nitrate, and also can better preserve the green of Toona sinensis. Whether it is cold, fried or fried Chinese toon fish, you might as well blanch it first, which can greatly improve the safety of eating Chinese toon.
Fourth, blanch before quick freezing. Toona sinensis is a seasonal vegetable. Many people like to freeze it and eat it. However, the Toona should be blanched before quick freezing. Research data show that blanching for 50 seconds before freezing storage, not only the safety is greatly improved, but also vitamin C can be better preserved.
Fifth, don't marinate toon sprouts for a long time. Many people like to salt for two or three days, which is a very unsafe habit. Because the nitrite content of Toona sinensis will rise rapidly after pickling, and reach the peak in three or four days (when the amount of added salt is 10% ~ 20%), which is far more than the permitted standard. Pickling after blanching can greatly reduce the nitrate content, which also reduces the risk of pickling Toona sinensis. However, the safest way is to marinate the Toona sinensis after blanching for a week, and then eat it after the nitrite content is reduced.
In a word, sprouts, fresh eating, blanching, slow salting can ensure the safety of eating Toona sinensis.
Toona sinensis is a kind of hair. It is easy to induce relapse of chronic diseases by eating more. Therefore, patients with chronic diseases should eat less or not.