Heat-resistant resistant starch (rs) and preparation method thereof

Abstract

The present disclosure provides a heat-resistant resistant starch (RS) and a preparation method thereof, and belongs to the technical field of food processing. The preparation method includes: preparing a short chain glucan (SCG) into a SCG mixed dispersion with a mass volume concentration of 20% to 100%, and conducting gelatinization to obtain a transparent SCG molecule solution; naturally cooling the transparent SCG molecule solution to allow recrystallization until the transparent SCG molecule solution is cooled to room temperature to obtain a crystallized starch; and freeze-drying the crystallized starch to obtain the heat-resistant RS. The preparation method is green during an entire process and does not involve any organic solvent, thus achieving a breakthrough in the simple and efficient preparation of a heat-resistant high-crystallized starch with a high yield and small particles. In the present disclosure, the heat-resistant RS has higher thermal stability, relative crystallinity, and RS content.

Dependencies are inferred from the claim text.