Insights into the hierarchical structure and digestion rate of alkali-modulated starches with different amylose contents

Dongling Qiao; Long Yu; Hongsheng Liu; Wei Zou; Fengwei Xie; George Simon; Eustathios Petinakis; Zhiqi Shen; Ling Chen

doi:10.1016/j.carbpol.2016.02.064

Insights into the hierarchical structure and digestion rate of alkali-modulated starches with different amylose contents

Dongling Qiao, Long Yu, Hongsheng Liu, Wei Zou, Fengwei Xie, George Simon, Eustathios Petinakis, Zhiqi Shen, Ling Chen

Research output: Contribution to journal › Article › peer-review

44 Citations (SciVal)

Abstract

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.

Original language	English
Pages (from-to)	271-281
Number of pages	11
Journal	Carbohydrate Polymers
Volume	144
DOIs	https://doi.org/10.1016/j.carbpol.2016.02.064
Publication status	Published - 25 Jun 2016

Bibliographical note

Publisher Copyright:
© 2016 Elsevier Ltd.

Funding

The authors from SCUT, China would like to acknowledge research funds from the National Natural Science Foundation of China (Nos. 31130042 and 31571789 ) and the Science and Technology Planning Project of Guangdong Province , China (Nos. B090600054 and B010404002 ). The research is also supported by the Guangdong Innovative and Entrepreneurial Research Team Program (No. 2013C085). This research was partly undertaken on the SAXS/WAXS beamline at the Australian Synchrotron, Victoria, Australia. D. Qiao also would like to thank the China Scholarship Council (CSC) for providing research funding for her visiting studies at Monash University as part of her PhD work.

Funders	Funder number
Guangdong Innovative and Entrepreneurial Research Team Program	2013C085
National Natural Science Foundation of China	31130042, 31571789
China Scholarship Council
South China University of Technology
Science and Technology Planning Project of Guangdong Province	B010404002, B090600054

Keywords

Abbreviation RMS regular maize starch
G50 Gelose 50 starch

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Materials Chemistry

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10.1016/j.carbpol.2016.02.064

Cite this

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abstract = "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.",

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AU - Qiao, Dongling

AU - Yu, Long

AU - Liu, Hongsheng

AU - Zou, Wei

AU - Xie, Fengwei

AU - Simon, George

AU - Petinakis, Eustathios

AU - Shen, Zhiqi

AU - Chen, Ling

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AB - 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.

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Insights into the hierarchical structure and digestion rate of alkali-modulated starches with different amylose contents

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

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