Non starch polysaccharide

Composition of dietary fiber

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Non starch polysaccharides refer to polysaccharides other than starch, mainly including cellulose hemicellulose 、 pectin Wait, yes dietary fiber The main components of. reunite with carbohydrate One of them is found in plants.

Chinese name: Non starch polysaccharide
Foreign name: non-starch polysaccharides

chemical formula: (C6H10O5)n
Type: Complex Carbohydrates

catalog

one brief introduction
two classification

brief introduction

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Please refer to: Water soluble fiber ， dietary fiber

In recent years, it is believed that non starch polysaccharides consist of cellulose, hemicellulose , pectin, Resistant starch form.

classification

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Concept and classification of non starch polysaccharides Non starch polysaccharide is composed of several monosaccharides Glycosidic bond Connected POLYMER , including α - Portuguese Glycan Other than most polysaccharide molecules. NSPs were initially classified according to the methods used to extract and separate polysaccharides. cell wall The remaining insoluble matter after a series of alkali extraction is called cellulose, which is soluble in Lye The substance in is called hemicellulose. Considering the non starch polysaccharide Chemical structure And biological function, people found that solubility The classification is inaccurate. Generally, non starch polysaccharides are divided into three categories, namely cellulose, non fiber polysaccharides (hemicellulose polymers) and pectin glycans. Non fiber polysaccharides include Xylan 、β- glucan 、 Mannan 、 Galactan Etc. according to Water solubility Non starch polysaccharides can be divided into soluble non starch polysaccharides (SNSP) and insoluble non starch polysaccharides (INSP). This is because in the cell wall of grains, some non starch polysaccharides loosely interact with cellulose Lignin 、 protein It is soluble in water and is called soluble non starch polysaccharide.

Non starch polysaccharide (NSP) is the main component of feed fiber, which will Nutrients Surrounded by the cell wall, some fibers can be dissolved in water and produce viscous substances. These viscous substances inhibit the normal digestive function of animals and prevent them from absorbing nutrients. If these NSPs are removed, nutrients can be released from the cell wall, thus improving Metabolic energy And protein Utilization 。 Corn and wheat contain a large amount of NSP, and many plant protein sources, such as Soybean meal , also contains NSP. Add to feed Enzyme preparation These NSPs can be removed, such as Cellular structure The enclosed starch and protein can be released, thus improving the utilization rate of metabolic energy and protein of soybean meal.

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