Method of preparing soluble crabapple dreg dietary fiber through fermentation

Abstract

The invention relates to a method of preparing soluble crabapple dreg dietary fiber through fermentation, comprising the following steps: soaking the dry ground crabapple dregs in water according to the proportion of 1:15-20 to prepare culture medium, and sterilizing the culture medium at 121 DEG C for 15 min; inoculating rhizopus oryzae into the culture medium, fermenting the culture medium and filtering the culture medium to obtain filtrate; precipitating the filtrate with absolute ethyl alcohol; and drying the filtrate in vacuum to obtain the power of the soluble crabapple dreg dietary fiber. The soluble crabapple dreg dietary fiber is prepared from the raw material of the crabapple dregs, thus the waste material is utilized, and the environmental pollution is reduced. The soluble crabapple dreg dietary fiber is prepared through microbial fermentation in mild condition with simple equipment by consuming less energy, the content of the soluble crabapple dreg dietary fiber is improved greatly, and the soluble crabapple dreg dietary fiber is prone to industrial production.

Description

1. Technical field [0001] The invention belongs to the field of food, and relates to the development and utilization of sand fruit peel residue, in particular to a method for preparing soluble dietary fiber by using sand fruit peel residue as a raw material and adopting a microbial fermentation method. 2. Background technology [0002] Shaguo pomace is a by-product in the processing of Shaguo juice, which is rich in dietary fiber. At present, a large amount of pomace in the processing of shaguo concentrated juice is discarded as garbage, which not only wastes resources but also pollutes the environment. Dietary fiber, as a functional food base material, has received extensive attention in recent years because it has many physiological functions such as controlling intestinal flora imbalance, laxative and laxative. With the development of society and the improvement of people's living standards, the unreasonable dietary structure has led to the emergence of many diseases of ...

AI Technical Summary

Problems solved by technology

At present, the preparation of dietary fiber mostly adopts chemical methods and simple washing methods, which need to add acid, alkali, salt and other reagents, and a large number of anions and cations are produced in the process of processing, which brings some unfavorable factors to the utilization of dietary fiber.

These methods make the main physiologically active substance loss of gained dietary fiber very big, because strong solvent (acid, alkali etc.) treatment has caused nearly 100% water-soluble fiber, 50%~60% hemicellulose and 10%~30% % of cellulose is lost by dissolution