Today is the rain in the solar term of the lunar calendar, the sixth solar term in the 24 solar terms, and the last solar term in spring. It comes from the ancient saying that "rain produces 100 grains". In the north, there is a custom of eating Chinese Toon in the rain. Today, I will tell you about Chinese toon.
Gu Yu eats Chinese toon, invigorating spleen and regulating qi
Traditional Chinese medicine believes that Chinese toon is bitter and cold, which has the functions of clearing away heat and detoxification, strengthening stomach and regulating qi, astringent intestines, hemostasis, sterilization and anti-inflammatory, insecticidal and nourishing essence, beauty and beauty.
Modern medical research found that Toona not only has unique flavor and attractive appetite, but also has high nutritional value. It is rich in potassium, calcium and magnesium. The content of vitamin B group is also among the best in vegetables. In addition, the study also found that Toona sinensis can help prevent chronic diseases. Among them, there are ingredients that inhibit many kinds of pathogenic bacteria, ingredients that help to reduce blood lipid and blood sugar, and quite rich polyphenol antioxidants.
It can be seen that Chinese toon is a kind of good vegetable with the same origin of medicine and food. It can not only cook all kinds of special dishes, but also has the function of disease prevention and treatment, which is deeply loved by people.
However, there are nitrates and nitrites in Chinese toon, which are much higher than those in ordinary vegetables, and there is a risk of carcinogenic nitrosamines. Therefore, eating Chinese toon has a potential safety hazard, and the following principles should be followed:
Choose the most tender and fresh Chinese toon buds
The content of nitrate is low in the early stage of Chinese toon germination. With the growth of Chinese toon buds, the content of nitrate is also increasing. By the middle of April, the nitrate content of Toona sinensis buds in most areas exceeded the standards of who and FAO. That is to say, the more tender the Chinese toon bud is, the less nitrate it contains, the less nitrite it will produce in future storage.
Choose the freshest Chinese toon bud
The results also showed that the content of nitrite in the buds of Toona sinensis was still low even though the nitrate content increased after the middle of April. Therefore, if eating fresh Chinese toon buds, it will not cause the problem of nitrite poisoning. However, in the process of room temperature storage after harvest, a large number of nitrates will be converted into nitrites, which will bring security risks. The so-called high nitrite content in Chinese toon bud is the reason.
That is to say, it is safe to eat the fresh Chinese toon buds picked from the trees immediately, while the content of nitrite in the Chinese toon buds purchased from the market will increase greatly because they have been transported. If it's time for the leaves to fall off, a lot of nitrite will be produced.
Removal of nitrate and nitrite by blanching
If the Chinese toon bud is not fresh enough, but the fragrance is still there, and it's a pity to throw it away, then you might as well blanch it. 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 color of Chinese toon. Whether it's cold mix, stir fry or fried Chinese toon fish, you can blanch it first, which can greatly improve the safety of eating Chinese toon. Because the aroma components of Toona sinensis are mainly derived from essential oils, they are insoluble in water. Therefore, scalding does not significantly affect the flavor of dishes.
You need to blanch before freezing
Chinese toon is a seasonal vegetable. Many people like to keep it frozen and eat it every year. However, the Chinese toon should be blanched before freezing. Research data show that blanching for 50 seconds and then frozen storage, not only the safety is greatly improved, but also vitamin C can be better preserved. When frozen for 2 months, the content of vitamin C in scalded Chinese toon was 71% of fresh product, but only 35% of fresh product. At the same time, whether it's color or flavor, it's better to scald and then freeze. After blanching, put into a sealed plastic bag, put it in the freezer freezer, it can be stored for more than 1 month, keeping the green and fragrant characteristics.
Match with foods with high vitamin C content
The content of vitamin C in Chinese toon is higher than that in common fruits and vegetables. If we can eat fresh Chinese toon, vitamin C can help to block the formation of carcinogen nitrosamine.
If the Chinese toon is not fresh enough, you can eat it with other fresh fruits and vegetables to avoid the hidden dangers of nitrite.
After avoiding the hidden danger of Chinese toon as much as possible, we can safely eat Chinese toon healthy and delicious.