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Effect of heat-moisture treatment on multi-scale structures and physicochemical properties of breadfruit starch

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Tan, Xiaoyan, Li, Xiaoxi, Chen, Ling, Xie, Fengwei, Li, Lin and Huang, Jidong (2017) Effect of heat-moisture treatment on multi-scale structures and physicochemical properties of breadfruit starch. Carbohydrate Polymers, 161 . pp. 286-294. doi:10.1016/j.carbpol.2017.01.029

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Official URL: http://dx.doi.org/10.1016/j.carbpol.2017.01.029

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Abstract

Breadfruit starch was subjected to heat-moisture treatment (HMT) at different moisture content (MC). HMT did not apparently change the starch granule morphology but decreased the molecular weight and increased the amylose content. With increased MC, HMT transformed the crystalline structure (B → A + B → A) and decreased the relative crystallinity. With ≥25% MC, the scattering peak at ca. 0.6 nm−1 disappeared, suggesting the lamellar structure was damaged. Compared with native starch, HMT-modified samples showed greater thermostability. Increased MC contributed to a higher pasting temperature, lower viscosity, and no breakdown. The pasting temperature of native and HMT samples ranged from 68.8 to 86.2 °C. HMT increased the slowly-digestible starch (SDS) and resistant starch (RS) contents. The SDS content was 13.24% with 35% MC, which was 10.25% higher than that of native starch. The increased enzyme resistance could be ascribed to the rearrangement of molecular chains and more compact granule structure.

Item Type: Journal Article
Subjects: S Agriculture > SB Plant culture
T Technology > TR Photography
Divisions: Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group)
Library of Congress Subject Headings (LCSH): Breadfruit, Starch, Starch crops
Journal or Publication Title: Carbohydrate Polymers
Publisher: Pergamon Press
ISSN: 0144-8617
Official Date: 1 April 2017
Dates:
DateEvent
1 April 2017Published
6 January 2017Accepted
Volume: 161
Page Range: pp. 286-294
DOI: 10.1016/j.carbpol.2017.01.029
Status: Peer Reviewed
Publication Status: Published
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
31130042[NSFC] National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
U1501214[NSFC] National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
U1501214Natural Science Foundation of Guangdong Provincehttp://dx.doi.org/10.13039/501100003453
2014YT02S029The YangFan Innovative and Entrepreneurial Research Team ProjectUNSPECIFIED
31271824[NSFC] National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
2014A2FC217The Key R&D Projects of ZhongshanUNSPECIFIED
2014B090904047The R&D Projects of Guangdong ProvinceUNSPECIFIED

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