Method for preparing amorphous starch grain not containing cross-linked chemical bond using alcohol solvent

Abstract

The invention relates to a method for preparing amorphous starch grain containing no cross bond with alcohol, comprising following steps: dispersing starch or converted starch into alcohol solution at constant temperature to prepare homogenous starch milk, heating or adding strong basic for amorphous treatment, washing, filtering, disintegrating, drying and sifting with 80-120 mu screen got amorphous starch. The method can also comprises following steps: dispersing starch or converted starch into water or salt solution to prepare starch milk, then treating starch milk for amorphous, dispersing amorphous starch with alcohol or washing, filtering, disintegrating, drying and sifting with 0-120 mu screen. The prepared starch grain retains gelatinization property of original starch grain, and can be widely used in foodstuff, paper making, weaving, building material, chemical industry, pharmacy, oil, environmental protection, agriculture, forestry and mining industry.

Description

technical field

[0001] The invention relates to a method for producing amorphous starch, in particular to a method for preparing amorphous starch granules without crosslinking chemical bonds by using ethanol solvent. Background technique

[0002] Starch is a granular natural polymer synthesized by plants through photosynthesis. Its basic components are carbohydrates. Starch products mainly refer to starch and modified starch. At present, although there are many kinds of starch products, they can be divided into two categories in terms of physical properties. One is polycrystalline granular products that are both crystalline and granular; the other is neither crystalline nor granular. Amorphous gelatinized product without granularity.

[0003] Although starch and modified starch products in these two states of matter have been widely used, they still have relatively large defects in structure and properties. Starch in the polycrystalline granular state has both crystallinit...