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

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Wang, Hongwei, Liu, Yufan, Chen, Ling, Li, Xiaoxi, Wang, Jun and Xie, Fengwei (2018) Insights into the multi-scale structure and digestibility of heat-moisture treated rice starch. Food Chemistry, 242 . pp. 323-329. doi:10.1016/j.foodchem.2017.09.014

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Official URL: http://dx.doi.org/10.1016/j.foodchem.2017.09.014

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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.

Item Type: Journal Article
Subjects: Q Science > QP Physiology
T Technology > TX Home economics
Divisions: Faculty of Science > WMG (Formerly the Warwick Manufacturing Group)
Library of Congress Subject Headings (LCSH): Rice, Starch, Digestion
Journal or Publication Title: Food Chemistry
Publisher: Elsevier BV
ISSN: 0308-8146
Official Date: 1 March 2018
Dates:
DateEvent
1 March 2018Published
7 September 2017Available
4 September 2017Accepted
Date of first compliant deposit: 8 March 2019
Volume: 242
Page Range: pp. 323-329
DOI: 10.1016/j.foodchem.2017.09.014
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
U1501214[NSFC] National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
U1501214Guangdong Joint Foundation Key ProjectUNSPECIFIED
2016YFD04012021National Basic Research Program of China (973 Program)UNSPECIFIED
2014YT02S029YangFan Innovative and Entrepreneurial Research Team ProjectUNSPECIFIED
2014A2FC217The Key R&D Projects of ZhongshanUNSPECIFIED
2014B090904047The R&D Projects of Guangdong ProvinceUNSPECIFIED
31271824[NSFC] National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
201607010109Guangzhou Science and Technology Program key projectshttp://dx.doi.org/10.13039/501100004000
2015KTSCX006The Innovative Projects for Universities in Guangdong ProvinceUNSPECIFIED
2015ZZ106[MEPRC] Ministry of Education of the People's Republic of Chinahttp://dx.doi.org/10.13039/501100002338
UNSPECIFIEDAustralian Synchrotronhttp://dx.doi.org/10.13039/501100001164

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