Preparation method of very fine starch

Abstract

A process for preparing superfine starch from ordinary starch features HF vibration type ball grinding at-20- -1 deg.C for 2-30 hr. The weight ratio of starch to grinding balls or rods is 1:(3-20).

Description

technical field [0001] The invention belongs to a method for preparing micronized starch, and in particular relates to a method for preparing micronized starch by using a ball mill. Background technique [0002] In recent years, the modification of starch granule size and its properties have been paid more and more attention in various applications. Under the physical crushing of starch granules, as the size, shape and uniformity change, the aggregation structure of starch molecules also changes, resulting in corresponding changes in physical and chemical properties such as dispersibility, solubility, gelatinization properties and chemical activity. Compared with the traditional chemical denaturation method, physical crushing of starch to make its granules finer is a new idea and method for deep processing of starch, and the product has wider uses. [0003] The preparation of micronized starch usually has two categories: chemical method and physical method. At present, the...

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Problems solved by technology

[0004] In the preparation of the above-mentioned micronized starch, either the energy consumption is extremely high and the loss is large (such as jet milling); or the cost is relatively high (such as wet processing needs to be combined with spray drying); or the processing time is long and the efficiency is low (such as ordinary ball milling method)