As the name implies, jelly should be a kind of food made of fruit. The important raw material that can turn fruit into jelly is "colloid". Most jellies use seaweed gel. This is a natural food additive. In nutrition, it is called soluble dietary fiber. As we know, fruits, vegetables and coarse grains contain certain dietary fiber, and their main nutritional function to human body is to regulate intestinal function, especially to moisten intestines and relax bowels. Jelly has the same function as them. Eating more can increase intestinal wetness and improve constipation. At the same time, adding oligosaccharides to some jellies has the functions of regulating intestinal flora, increasing beneficial bacteria such as Bifidobacterium, strengthening digestion and absorption function and reducing the incidence of diseases. According to the survey, it is a common phenomenon that most people in China consume high-fat and high-calorie foods in their daily diet. When vegetables and fruits cannot be supplemented in time, it is a good choice to eat more jelly to improve digestion. In addition, another advantage of jelly is its low calorie. It contains almost no protein, fat and other heat energy nutrients, so people who want to lose weight or keep slim can safely eat it. The nutrition of fruit is lost. Jelly made of fruit juice and pulp retains most of the nutrients in raw materials, such as minerals, soluble dietary fiber and vitamins, but it will also cause certain losses in production and processing. Therefore, don't think that eating jelly can replace fruit. Many jelly products also claim to have added nutrients such as calcium, but don't easily believe that eating it can supplement calcium. Because jelly contains a lot of dietary fiber, it is digested very quickly in the human body, and the supplementary nutrients will soon be lost with the metabolism of the human body, so the supplementary effect is not very good. There are three problems to pay attention to when eating jelly. Jelly is a good snack, but when eating it, we should pay attention to the following three problems: First, the production of jelly is inseparable from food additives. Although they are all safe, children should not eat more, just eat 50- 100 grams a day. Second, some jellies are "fruity" jellies. There is no juice pulp in the raw materials, but fruit flavor and food pigment. This kind of jelly has low nutritional value, so it is best not to eat it. Third, when choosing jelly, we must look at whether the packaging is strong and whether there is air leakage, not just cheap.