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Insights into the multi-scale structure and digestibility of heat-moisture treated rice starch

Lookup NU author(s): Professor David XieORCiD

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Abstract

The digestibility and structural changes of rice starch induced by heat-moisture treatment (HMT) were investigated, and the relationships among the moisture content–starch structure–starch digestibility were revealed. HMT could simultaneously disorder and reassemble the rice starch molecules across multi-scale lengths and convert some fractions of rapidly-digestible starch (RDS) into slowly-digestible starch (SDS) and resistant starch (RS). In particular, the HMT rice starch with less than 30% moisture content showed a higher SDS + RS content (25.0%). During HMT, SDS and RS were preferably formed by the degraded starch molecules with Mw between 4 × 105 and 4 × 106 g/mol, single helices and amylose-lipids complexes that were formed by degraded starch chains with higher thermal stability and crystalline lamellae with greater thicknesses. Thus, our research suggests a potential approach using HMT to control the digestion of starch products with desired digestibility.


Publication metadata

Author(s): Wang H, Liu Y, Chen L, Li X, Wang J, Xie F

Publication type: Article

Publication status: Published

Journal: Food Chemistry

Year: 2018

Volume: 242

Pages: 323-329

Print publication date: 01/03/2018

Online publication date: 07/09/2017

Acceptance date: 04/09/2017

Date deposited: 31/08/2023

ISSN (print): 0308-8146

ISSN (electronic): 1873-7072

Publisher: Elsevier

URL: https://doi.org/10.1016/j.foodchem.2017.09.014

DOI: 10.1016/j.foodchem.2017.09.014


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Funding

Funder referenceFunder name
2014A2FC217
2014B090904047
201607010109
31271824
2014YT02S029
2015KTSCX006
2015ZZ106
2016YFD04012021
Fundamental Research Funds for the Central Universities
Innovative Projects for Universities in Guangdong Province
Key R&D Projects of Zhongshan
Key Project of the National Natural Science Foundation of China (NSFC)-Guangdong Joint Foundation Key Project
National Key Research and Development Programa of China
NSFC
R&D Projects of Guangdong Province
Science and Technology Program of Guangzhou
U1501214
YangFan Innovative and Entrepreneurial Research Team Project

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