Preparation method of soluble dietary fibers

Abstract

The invention discloses a preparation method of soluble dietary fibers. The preparation method comprises the following steps of performing pretreatment, preparing semi-finished products, performing purification, and performing post-treatment. According to the method disclosed by the invention, raw materials are firstly pretreated, then enzymolysis is performed, and then purification is performed, so that finished products have the advantage of being high in purity. Before pretreatment, a manner of combining high-temperature cooking treatment with steam-explosion treatment and ultrasonic treatment is performed on the raw materials, so that structure tissues of the raw materials can be effectively destroyed, and contents can be sufficiently exposed; and through combination of impurity removal treatment, non-dietary fiber components in the raw materials can be further reduced, and the pretreated raw materials not only are favorable for strengthening enzymolysis effects of cellulase or complex enzymes of cellulase and hemicellulase, the enzymolysis is more sufficient, the purity of the finished products is further improved, and the palatability of the finished products can be effectively improved. The finished products made by the method disclosed by the invention also have the advantages of being small in fiber particle diameter, and high in water retention ability and swelling capacity.

Description

technical field [0001] The invention belongs to the technical field of dietary fiber preparation, and in particular relates to a preparation method of soluble dietary fiber. Background technique [0002] Dietary fiber is an important non-nutrient. It is a kind of indigestible part of carbohydrates such as non-starch polysaccharides and oligosaccharides. It can neither be digested and absorbed by the human gastrointestinal tract, nor can it produce energy. However, in recent years, more and more studies have shown that the intake of dietary fiber is closely related to human health, and adequate intake of dietary fiber will reduce the risk of constipation, obesity, diabetes, cardiovascular disease and intestinal cancer. For example, dietary fiber can absorb a large amount of water in the intestinal tract, keep the stool soft, effectively activate the beneficial bacteria in the intestinal tract, promote the proliferation of beneficial bacteria, and create a healthy intestinal e...

AI Technical Summary

Problems solved by technology

Traditional processing methods such as enzymatic hydrolysis and chemical methods, most of the soluble dietary fibers produced by such traditional methods have problems such as low purity, low yield, and poor taste, and some even cause the water-holding capacity of the product to decrease, affecting the efficacy of dietary fiber