Preparing process of water caltrop stem dietary fiber

Abstract

The present invention discloses preparation process of water caltrop stem dietary fiber. The preparation process includes the following steps: washing water caltrop stem and cutting; blanching for 5-30 min and dewatering; decolorizing with 0.01-2.0 wt % concentration hydrogen peroxide solution at 30-90deg.c and regulating pH value to 8-11 with sodium hydroxide; filtering, washing and vacuum drying or flash drying to water content of 10-30 %; crushing, microwave drying and sterilizing to water content of 5-13 %; and final superfine crushing in a superfine crusher to obtain the dietary fiber. The dietary fiber is used as food additive for producing biscuit, bread, etc. The dietary fiber features facile material, high purity, low cost, etc.

Description

technical field

[0001] The invention relates to the preparation of dietary fiber, in particular to a method for preparing dietary fiber from water chestnut stems, specifically a method for preparing dietary fiber from water chestnut stems. Background technique

[0002] Dietary fiber is a general term for a class of polymer components that cannot be digested by the human body and are mainly composed of polysaccharides. It mainly includes cellulose, hemicellulose, lignin, pectin, agar, etc. Since the 1960s, studies have found that Africans rarely suffer from "civilization diseases" in Western developed countries due to their frequent consumption of high-fiber foods. It has been confirmed that dietary fiber can safely regulate the body's blood sugar level and prevent constipation and colon cancer. , Increase satiety, prevent obesity, promote the proliferation of bifidobacteria and aerobic bacteria, enhance macrophage function, improve disease resistance and other physiological...