What nutrition has been lost in vegetable and fruit juice?Time：2019-08-23    Views：2725次

The mother of an eight-month-old baby in the mothers group asked for help: "Children do not like to eat fruit, but they like to drink fruit juice. Will this destroy dietary fiber and harm their health?" In response, Ruan Guangfeng, a Master of Nutrition and Food Safety and a member of the Food and Nutrition Information Exchange Center, pointed out in his personal micro-letter that compared with fruit juice, vitamin C and dietary fiber were all lost, and the feeling of satiety was poor and the sugar content was high.

Vitamin C loss: Vitamin C, known as ascorbic acid, is an essential organic compound to maintain our human life activities. It helps to improve the immunity of the body, consolidate cellular tissue and prevent scurvy. Fresh vegetables and fruits should be eaten by people who often suffer from gum bleeding. The direct consequence of juicing is the loss of vitamins and flavonoids, anthocyanins and other antioxidants in vegetables and fruits, even if they are drunk immediately after being squeezed. When fruits and vegetables are intact, ascorbic acid oxidase and vitamin C are located separately, as if they lived in different rooms. Once the juice is squeezed, the high-speed rotating blade will destroy all the cells in the fruits and vegetables, causing the ascorbic acid oxidase and vitamin C to mix together, and the two react oxidatively, vitamin C is destroyed. If fruit is eaten directly, it is usually swallowed with a little chewing. The damage to cells is very small. The contact of vitamin C and ascorbic acid oxidase is relatively small, which can basically guarantee the original vitamin C content in pulp.

Dietary fiber loss: After juicing, insoluble elements such as calcium and dietary fiber will be left in the residue, so drinking fruit and vegetable juice will reduce people's intake of dietary fiber rich in vegetables and fruits, and these dietary fibers have the health effects of preventing and reducing diabetes and cardiovascular diseases. At the same time, insoluble fibers can prevent gastrointestinal diseases, stimulate intestinal peristalsis and promote defecation. Because of the loss of a lot of essential dietary fibers, juicing vegetables and fruits to drink not only can not help digestion, but also cause constipation.