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Lookup NU author(s): Professor David XieORCiD
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Combined analytical techniques were used to explore the effects of alkali treatment on the multi-scale structure and digestion behavior of starches with different amylose/amylopectin ratios. Alkali treatment disrupted the amorphous matrix, and partial lamellae and crystallites, which weakened starch molecular packing and eventually enhanced the susceptibility of starch to alkali. Stronger alkali treatment (0.5% w/w) made this effect more prominent and even transformed the dual-phase digestion of starch into a triple-phase pattern. Compared with high-amylose starch, regular maize starch, which possesses some unique structure characteristics typically as pores and crystallite weak points, showed evident changes of hierarchical structure and in digestion rate. Thus, alkali treatment has been demonstrated as a simple method to modulate starch hierarchical structure and thus to realize the rational development of starch-based food products with desired digestibility.
Author(s): Qiao D, Yu L, Liu H, Zou W, Xie F, Simon G, Petinakis E, Shen Z, Chen L
Publication type: Article
Publication status: Published
Journal: Carbohydrate Polymers
Year: 2016
Volume: 144
Pages: 271-281
Print publication date: 25/06/2016
Online publication date: 10/03/2016
Acceptance date: 22/02/2016
Date deposited: 10/10/2023
ISSN (print): 0144-8617
ISSN (electronic): 1879-1344
Publisher: Elsevier
URL: https://doi.org/10.1016/j.carbpol.2016.02.064
DOI: 10.1016/j.carbpol.2016.02.064
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