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Structural disorganization of cereal, tuber and bean starches in aqueous ionic liquid at room temperature : role of starch granule surface structure

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Zan, Ke, Wang, Jinwei, Ren, Fei, Yu, Jinglin, Wang, Shuo, Xie, Fengwei and Wang, Shujun (2021) Structural disorganization of cereal, tuber and bean starches in aqueous ionic liquid at room temperature : role of starch granule surface structure. Carbohydrate Polymers, 258 . 117677. doi:10.1016/j.carbpol.2021.117677

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Official URL: http://dx.doi.org/10.1016/j.carbpol.2021.117677

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Abstract

The structural disorganization of different starches in a 1-ethyl-3-methylimidazolium acetate ([Emim][OAc])/water mixture (1:6 mol./mol.) at room temperature (25 °C) was studied. For normal cereal starches, which have pinholes randomly dispersed on the granule surface or only in the outermost annular region (wheat starch), the aqueous ionic liquid (IL) completely destroyed the granule structure within 1–1.5 h. Pea starch (PeS) granules with cracks were destroyed by the aqueous IL within 6 h. High-amylose maize starch (HAMS), as well as potato and purple yam starches (PoS and PYS), which have a dense and thick outer granule layer, were even more resistant to the action of the solvent. Structural disorganization was accompanied by increased viscosity and controlled the binding of water molecules with starch chains. From this study, we concluded that the surface characteristics of starch granule are an important factor affecting starch structural disorganization in an aqueous IL.

Item Type: Journal Article
Subjects: Q Science > QH Natural history
S Agriculture > SB Plant culture
T Technology > TP Chemical technology
Divisions: Faculty of Science > WMG (Formerly the Warwick Manufacturing Group)
Library of Congress Subject Headings (LCSH): Plant varieties, Saltwater solutions, Starch, Cytoplasmic granules
Journal or Publication Title: Carbohydrate Polymers
Publisher: Pergamon Press
ISSN: 0144-8617
Official Date: 15 April 2021
Dates:
DateEvent
15 April 2021Published
23 January 2021Available
14 February 2021Accepted
Volume: 258
Article Number: 117677
DOI: 10.1016/j.carbpol.2021.117677
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
32030084[NSFC] National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
31871796[NSFC] National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
20ZYJDJC00040Natural Science Foundation of Tianjin Municipal Science and Technology Commissionhttp://dx.doi.org/10.13039/501100010229
17JCJQJC45600Natural Science Foundation of Tianjin Municipal Science and Technology Commissionhttp://dx.doi.org/10.13039/501100010229

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