◆ Inulin, also known as Jerusalem artichoke extract inulin, is a natural fructose polymer. It is a fructan made from D-fructofuran molecules connected by β- (2,1) glycosidic bonds. At the end of each inulin molecule, a glucose residue is connected with an α- (1,2) glycosidic bond. The degree of polymerization is usually 2-60, and the average degree of polymerization is 10. When the degree of polymerization is low (DP = 2-9), May be called fructooligosaccharides.
◆ As a natural soluble dietary fiber, inulin is hardly hydrolyzed and digested by gastric acid, but is fermented by a large number of beneficial microorganisms in the colon, so it has various health functions, such as controlling blood lipids, lowering blood sugar, improving intestinal function, and promoting minerals. Absorption etc. Inulin can not only be used as a fat substitute for low-energy food production, but also has the physiological functions of dietary fiber and probiotics, and is an excellent functional food base. At present, inulin is widely used in the fields of medicine and health care, and food industry.
◆ Inulin is widely distributed in nature. Some fungi and bacteria also contain inulin, but its main source is plants. Plants that people eat daily, such as onions, garlic, bananas, and wheat, contain inulin. However, inulin is mainly present in the Asteraceae in nature. The content of Jerusalem artichoke (commonly known as Jerusalem artichoke, the main raw material of domestic inulin) is 14% -19%, and the content of chicory (the main raw material of European inulin) is 15% -20%.