Dietary fiber is a kind of food can not be broken down by the digestive enzymes of the human body, can not be absorbed by the body of polysaccharide substances and lignin general term.

Although it has obvious differences with protein, fat, vitamins and other nutrients, it is of great significance to human health, until the 1970s, dietary fiber was officially introduced into the nutrition community, classified as the "seventh nutrient", and then the market showed a good growth trend.

Dietary fiber, as a macronutrient vital to intestinal digestive health, has become a healthy feature of food with low sugar, low fat, low calorie and high protein.

In addition, as a raw material ingredient that can be added to products, the main benefits of "dietary fiber +" include helping to increase satiety, improve intestinal health and even applied to the field of sugar reduction, improve the texture and stability of food, there is a huge market potential.

Dietary fiber is not digested by the gastrointestinal tract and goes directly to the large intestine. There are a variety of probiotics in the large intestine, and dietary fiber can partly provide food for intestinal probiotics, but also clean up intestinal garbage, and provide a good environment for the proliferation of probiotics.

Polyglucose has the characteristics of water-soluble dietary fiber and prebiotics. Compared with insoluble dietary fiber, polyglucose has more health functions and processing advantages.

It has the characteristics of low calorie, stability, high tolerance, etc., and can be widely used in various foods, especially in functional foods such as low energy and high fiber.

Polydextrose is a polysaccharide composed of random crosslinked glucose, which is formed by melting and polycondensation of glucose and a small amount of sorbitol and citric acid at high temperature. Due to the difference in the degree of polymerization, the molecular weight ranges from 162 to 15000, of which the molecular weight is within 5000 accounted for 88.7%.

1. Common food: On November 28, 2014, the National Health and Family Planning Food Department's reply to polydextrose-related issues clearly pointed out that polydextrose can be managed as a common food raw material.

2. Food additives: "GB2760 Food Safety National Standard Food additives use standard" lists polyglucose as thickening agent, swelling agent, moisture retention agent, stabilizer, the use of a wide range, and unlimited.
a. Regulate the gut: polyglucose can be used by bacteria in the gut to ferment carbon dioxide, methane and SOFA (volatile fatty acids). The main components of SCFA were butyrate and propionate by isotopic tracer method. Colon bacteria can use butyrate to regulate their intestinal environment and inhibit the formation of cancer cells. Propionate can inhibit liver cholesterol synthesis, improve liver glucose metabolism, stimulate glycolysis and inhibit gluconeogenesis.
b. Reduce triglycerides and cholesterol: polyglucose can prevent triglyceride and cholesterol from entering the lymphatic capillaries. At the same time, the products of its degradation by intestinal microorganisms can also inhibit the synthesis of cholesterol, adsorb the metabolite of cholesterol bile acid and discharge it from the body, thereby reducing the content of cholesterol in the human body and preventing the formation of gallstones.
c. Help control and weight loss: polyglucose can form a film on the gastrointestinal wall, wrap the fat in the food, limit the absorption of fat in the digestive tract, promote the excretion of lipid substances, so as to reduce fat accumulation, achieve the effect of preventing obesity it can also suppress appetite, reduce eating, enhance satiety.
d. Promoting mineral absorption A study in The Journal of nutrition revealed for the first time that the calcium absorption of jejunum, ileum, cecum and large intestine of mice increased with the increase of the concentration of polyglucose between 0-100mmol/L.
Dietary addition of polyglucose can promote the absorption of calcium in the intestine, possibly because polyglucose is fermented in the intestine to produce short-chain fatty acids, which acidifies the intestinal environment, and the acidification environment increases the absorption of calcium.
e. Detoxification and improve immunity polyglucose can reduce the activity of α-benzopyrene hydroxylase, reduce the harm of benzopyrene to the digestive system, enhance the body's clearance rate of polychlorinated biphenyls, and it can also promote the body's dioxins in the form of feces excretion. Ouk fed mice polydextrose at 3% of daily food intake and found that fecal volume increased, fecal passage time in the intestine decreased, and fecal temperature increased. Tomlin and Read also found that polyglucose increased fecal output and softened it.