Soybean dietary fiber has become a leader in dietary fiber

The sources of dietary fiber are very extensive, and soybean dietary fiber is the leader in dietary fiber.

Soybean dietary fiber is a high-quality natural dietary fiber, mainly referring to the general term of high molecular sugars in soybeans that cannot be digested by human digestive enzymes. It mainly includes cellulose, pectin, xylan, mannose, etc. Although dietary fiber cannot provide any nutrients for the human body, it can safely regulate the blood sugar level of the human body, prevent constipation, and increase satiety. At the same time, it has the physiological functions of preventing obesity, promoting the proliferation of bifidobacteria and aerobic bacteria, enhancing the function of macrophages, and improving disease resistance. In addition, soybean dietary fiber also has the characteristics of rich nutrition, unique flavor, safe and convenient consumption, etc., and is the best among dietary fibers.


Soybean dietary fiber is a complex mixture, which can be divided into two categories: water-soluble dietary fiber and water-insoluble dietary fiber according to its different solubility characteristics. The basic composition of soybean dietary fiber and dietary fiber from other sources such as wheat bran fiber and rice bran fiber are similar, but the relative content of each component, molecular glycosidic bond, degree of polymerization and branched chain structure are quite different, these factors determine Their physical and chemical properties affect their corresponding nutritional functional properties in the human body.

Soybean dietary fiber is composed of cellulose, hemicellulose, pectin and pectin-like substances, glycoprotein and lignin. The cellulose in soybean dietary fiber is a polymer connected by β-glucopyranose groups through β(1→4) glycosidic bonds. The soybean dietary fiber hemicellulose mainly includes four kinds of arabinoxylan, xyloglucan, galactomannan and β(1→3, 1→4)-glucan. Pectin is polygalacturonic acid linked by α (1→4) glycosidic bonds as the backbone chain, the main chain contains (1→2) rhamnose residues, and some galacturonic acid residues are often methylated .

Pectin substances are mainly composed of arabinan, galactan or arabinogalactan, among which arabinan is connected by furanoarabinose through (1→5) glycosidic bonds to form a main chain, sometimes through C2 or C3 Bit even has branches. The carbohydrate portion of the glycoprotein in soybean dietary fiber is arabinogalactan. Soybean lignin is a macromolecular compound composed of three monomers, pinaphanol, sinapyl alcohol and p-hydroxycinnamyl alcohol.

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