Immature persimmons and purple grape skins are very astringent foods. Their astringency is caused by tannin, phytic acid and oxalic acid in food. These substances are powerful antioxidants, which are beneficial to prevent diabetes and hyperlipidemia. Not only that, among the same kind of fruit, the astringent variety has higher nutritional value. For example, sour apples are more delicious than big and sweet Fuji apples.
Health tips:
Tannin in astringent food is widely used in beauty products, and its main functions include astringency, sun protection, whitening, anti-wrinkle and anti-oxidation. Therefore, astringent food is really a rare beauty food for women.
2. Rough food
Coarse grains are coarse because they are rich in water-insoluble fibers, such as coarse grains, celery stalks and cabbage stalks. But these dietary fibers can help people prevent constipation, prevent intestinal cancer, promote the discharge of metal ions, help the body detoxify and lose weight. If you are worried that eating high-fat vegetables will make you fat, you can eat these foods, because this is the best time for coarse grains to work.
Health tips:
Dietary fiber is a kind of carbohydrate that human body can't digest. According to the solubility in water, it can be divided into two basic types: water-soluble fiber and water-insoluble fiber.
Cellulose, hemicellulose and lignin are three common water-insoluble fibers, which exist in plant cell walls. Water-insoluble fiber can reduce the risk of intestinal cancer, prevent constipation and diverticulitis by absorbing toxic substances in food, and reduce toxins discharged by digestive tract bacteria;
Pectin and gum are both water-soluble fibers and exist in non-fibrous substances in nature. Common foods such as barley, beans, carrots, oranges, flax, oats and oat bran are rich in water-soluble fiber. Water-soluble fiber can slow down digestion, expel cholesterol as quickly as possible, help regulate immune system function, and promote the discharge of toxic heavy metals in the body.
3. Bitter food
Like lemon peel, tea, dark chocolate, etc. It is rich in various glycosides, terpenoids and polyphenols, which make food bitter. For example, naringin in lemon peel and grapefruit peel, tea polyphenols in tea, polyphenols in red wine and chocolate can prevent cancer and heart disease, and also bring a little bitterness to food.
Health tips:
Bitter food should be bitter gourd with high acceptance. Momordica charantia has the effects of clearing away heat and relieving summer-heat, nourishing blood and benefiting qi, invigorating kidney and spleen, nourishing liver and improving eyesight, and has a certain curative effect on dysentery, sores, heatstroke and fever, excessive miliaria, conjunctivitis and other diseases. In addition, the content of vitamin C in bitter gourd is very high, which has the functions of preventing scurvy, protecting cell membrane, preventing atherosclerosis, improving stress ability and protecting heart.
4, "exotic" food
Although some foods are named after the word "Xiang", they taste strange, such as coriander and Toona sinensis. Coriander contains a lot of boron, which can help the human body absorb minerals and protect bones. It is most suitable for middle-aged and elderly people after 40 years old. Coriander is also rich in iron, calcium, potassium, zinc, vitamin A and vitamin C, which is beneficial to maintaining blood sugar stability and preventing cancer. Toona sinensis contains volatile aromatic compounds such as toosendanin, which can strengthen the spleen and stimulate appetite. It has the effects of clearing away heat, promoting diuresis and detoxifying, and is a good medicine for adjuvant treatment of enteritis, dysentery and urinary system infection. Studies have shown that Toona sinensis contains vitamin E and sex hormones, which has the functions of anti-aging, strengthening yang and nourishing yin, and has a certain curative effect on infertility, so it has the reputation of "fertility promoter".
5. Spicy food
Spicy taste in food is generally provided by capsaicin or volatile sulfide. Capsaicin can relieve pain, improve metabolism, burn fat and lose weight. Mustard has a strong spicy taste and a strong stimulating effect, which can regulate women's endocrine, enhance sexual function, stimulate vasodilation, enhance facial qi and blood circulation, and make women's faces more rosy.
Health tips:
The main component of mustard choking nose is isothiocyanate. This ingredient can not only prevent tooth decay, but also prevent cancer, prevent the deposition of vascular plaque and help treat asthma. In addition, mustard can also prevent hyperlipidemia, hypertension and coronary heart disease, and reduce blood viscosity.