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Updated: Apr 12, 2026

Analysis and Specification of Starch Granule Size Distributions
Published on: March 4, 2021
Structure and digestibility of debranched and repeatedly crystallized waxy rice starch
Feng Zeng1, Fuquan Chen1, Fansheng Kong2
1College of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510640, China.
Abstract:
Debranched waxy rice starch was subjected to repeated crystallization (RC) treatment, and its physicochemical properties and digestion pattern were investigated. The A-type crystalline pattern of native starch was crystallized to a complex of B- and V-type patterns by debranching and RC treatment. Among the treated starches, the relative crystallinity of debranched starch reached its maximum (29.6%) after eight repetitions of crystallization. Changes in weight-average molar mass among treated starch samples were not significantly different. The repeated-crystallized starches showed higher thermal transition temperatures and melting enthalpy than that of debranched starch. As a result, slowly digestible starch (SDS) content of repeated-crystallized starches reached a very high level (57.8%). Results showed that RC treatment induced structural changes of waxy rice starch result in a great amount of SDS.
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