China Nutrition Society suggests that it is best to eat one catty of vegetables every day, including 200g of dark green leafy vegetables. It is almost impossible to achieve this goal just by cooking vegetables. It is true that the beating of fruits and vegetables destroys vitamin C. The determination shows that the loss of vitamin C is as high as more than 80% after the direct beating of tomatoes, cucumbers and other vegetables. Beautiful women believe that their fruit and vegetable juices are the healthiest. The residue is not removed, the fiber and vitamins in it are retained to the maximum extent, and it can also detoxify, resist cancer and beautify. I replied: If you continue to eat vegetables normally for three meals a day, it is very healthy to add a cup of fruit and vegetable juice in the morning and evening. However, if you think that two cups of fruit and vegetable juice can replace the nutrition in the vegetables you eat every day, it is all wet. However, it is true that fruits and vegetables destroy vitamin C, and the principle is this: there are many oxidases such as vitamin C oxidase and phenol oxidase in fruits and vegetables. They live alone in a cell on weekdays and will not encounter antioxidant components such as vitamin C and polyphenols. Once thrown into the fruit and vegetable beater, the cells are ground and destroyed, and these ingredients will be mixed together to react. How fast the enzyme catalyzes the reaction, vitamin C will be lost in an instant. The results showed that the loss of vitamin C was as high as 80% after direct beating of tomatoes, cucumbers and other vegetables. Comparatively speaking, the loss rate of vitamin C in fried vegetables is only 30%-40%, while that in fried tomatoes is lower than 10%. After beating, there will be an obvious change, that is, the color of fruit and vegetable pulp will gradually deepen, which is the result of phenol oxidase. In this process, the antioxidant capacity of fruits and vegetables will gradually decline. In order to avoid this trouble, before making commercial fruit and vegetable juice, the raw materials should be blanched in boiling water to inactivate enzymes, so that discoloration will not occur and the preservation rate of vitamins will be higher. Another trouble of fruit and vegetable juice is that the fat-soluble nutrients in it may not be well absorbed and utilized. Such as carotene, lutein, lycopene, vitamin K and so on. If you don't eat stir-fry and stir-fry during the day, it's best to eat some fatty foods before and after drinking fruit and vegetable juice, such as yogurt, milk, eggs, meat, or oily staple food and snacks. In fact, westerners strongly advocate that vegetables and fruits should be beaten together, because they are not good at cooking vegetables and don't like the taste of raw vegetables. Beating green vegetables and sweet fruits together can make it easier for them to drink some vegetables, effectively increase their vegetable intake in a day, without increasing the intake of oil and salt, which is beneficial to health. There are still many restrictions on the types of plant raw materials used for pulping. Only tomatoes, cucumbers, carrots, lettuce and sweet peppers with fresh taste are suitable for juicing, while high-quality vegetables with high nutritional value, such as spinach, kale, cauliflower, Chinese cabbage and chrysanthemum morifolium, are suitable for juicing. There are some peculiar smells, which are always rejected by the hitters. Therefore, the varieties of vegetables eaten by beating method are greatly limited, and the contents of folic acid, lutein, calcium and magnesium are low. It is said that China's cooking is the best in the world, and even the green leafy vegetables, which are the biggest headache for westerners, can make a lot of delicious food in various ways. Whether eaten raw with sesame sauce or boiled with water, kale is both healthy and delicious food, which can completely retain its main health value. It would be a pity to use fruit and vegetable juice instead in order to keep up with the fashion or be afraid of trouble. The Nutrition Society of China suggests that it is best to eat one kilogram of vegetables every day, including 200 grams of dark green leafy vegetables. It is almost impossible to achieve this goal just by cooking vegetables. Therefore, cooking vegetables should follow the principle of both raw and cooked. Eat two plates of cooked vegetables cooked with less oil every day. In addition, add two cups of delicious fruit and vegetable juice, which is icing on the cake and adds points to beauty and health.