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Updated: May 17, 2026

Activation and Conjugation of Soluble Polysaccharides using 1-Cyano-4-Dimethylaminopyridine Tetrafluoroborate (CDAP)
Published on: June 14, 2021
Preparation and slowly digestible properties of β-cyclodextrins (β-CDs)-modified starches
Jinling Zhan1, Yaoqi Tian, Qunyi Tong
1The State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
Abstract:
The β-cyclodextrin (β-CD)-, maltosyl-β-CD (Mal-β-CD)- and hydroxypropyl-β-CD (HP-β-CD)-modified rice starches were prepared and their slowly digestible properties were estimated. The results showed that β-CD, Mal-β-CD and HP-β-CD significantly increased the slow digestibility of β-CDs-modified starches (P<0.05). The optimum conditions for the modification were obtained: amylose, 4.76%; free lipids, 0.24%; β-CD, Mal-β-CD and HP-β-CD, 3%; water, 80%; and equilibrium temperature, 25°C. The maximum yield of slowly digestible starch (SDS) was 52.1% when β-CD was used as a denaturant (β-CD, 3%; water, 80%; and equilibrium temperature, 25°C). This higher SDS yield was probably attributed to the better compatibility of β-CD and starch molecules. Furthermore, β-CD-, Mal-β-CD- and HP-β-CD-modified starches generated slowly digestible curves during enzymatic digestion and showed the intermediate predicted glycemic indexes (pGI) of 58.7, 69.1 and 70.3, respectively. These findings suggest that the β-CDs-induced modification is one of promising techniques for preparing the SDS products in food and pharmaceutical industries.
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