Pure natural sweet potato dietary fiber and preparation method thereof

Abstract

The invention discloses a pure natural sweet potato dietary fiber and a preparation method thereof, and relates to the technical field of food processing. The sweet potato dietary fiber is prepared from the components in parts by weight: 80-85 parts of sweet potato dietary fiber powder prepared by sweet potatoes, 5-6 parts of purple sweet potato powder prepared by purple sweet potatoes and 3-5 parts of bitter almond cortex powder prepared by bitter almond cortex. The preparation method of the pure natural sweet potato dietary fiber includes the steps of material selection of the sweet potatoes, fibrillation of the sweet potatoes, screening and extraction of sweet potato residue, preparation of insoluble dietary fiber, preparation of soluble dietary fiber, dietary fiber proportioning, preparation of the purple potato powder, preparation of the bitter almond cortex powder, mixing and matching, and vacuum packaging. According to the pure natural sweet potato dietary fiber and the preparation method thereof, proportioning of the nutrition structure of the sweet potato dietary fiber is scientific and reasonable, the modified dietary fiber has low calories, strong adsorption ability, canlower the blood sugar, reduce absorption of toxic substances such as heavy metal and nitrite ions of a human intestinal tract, has no preservatives and other additives, and is pure natural green health food; and the preparation method can be put into mechanization scale production to form industrialization.

Description

technical field [0001] The invention relates to the field of food processing, in particular to a pure natural sweet potato dietary fiber and a preparation method thereof. Background technique [0002] Dietary fiber is the edible parts of plants or similar carbohydrates that are difficult to digest and absorb in the human small intestine and can be completely fermented and decomposed in the large intestine. According to its solubility, it can be divided into two types: insoluble dietary fiber and soluble dietary fiber. In the 1970s, Trowell et al. put forward the "dietary fiber theory", and pointed out that the incidence of modern "civilization diseases" is related to the reduction of dietary fiber intake. A large number of studies have shown that dietary fiber has the function of preventing hyperlipidemia, diabetes, fatty liver, obesity, gallstones and intestinal cancer, can eliminate free radicals and toxic substances in the body, and regulate the immune function of the bo...

AI Technical Summary

Problems solved by technology

Therefore, the development and utilization of dietary fiber has gradually been paid attention to. The main dietary fiber extraction methods in the prior art are mostly chemical extraction methods, enzyme-alkali extraction methods, etc. The quality of the dietary fiber extracted is poor. It has a great adverse effect on the flavor of dietary fiber powder and the color of dietary fiber powder