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Hydration-induced crystalline transformation of starch polymer under ambient conditions
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Qiao, Dongling, Zhang, Binjia, Huang, Jing, Xie, Fengwei, Wang, David K., Jiang, Fatang, Zhao, Siming and Zhu, Jie (2017) Hydration-induced crystalline transformation of starch polymer under ambient conditions. International Journal of Biological Macromolecules, 103 . pp. 152-157. doi:10.1016/j.ijbiomac.2017.05.008 ISSN 0141-8130.
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WRAP-hydration-induced-crystalline-transformation-starch-polymer-ambient-conditions-Xie-2017.pdf - Accepted Version - Requires a PDF viewer. Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (1398Kb) | Preview |
Official URL: http://dx.doi.org/10.1016/j.ijbiomac.2017.05.008
Abstract
With synchrotron small/wide-angle X-ray scattering (SAXS/WAXS), we revealed that post-harvest hydration at ambient conditions can further alter the starch crystalline structure. The hydration process induced the alignment of starch helices into crystalline lamellae, irrespective of the starch type (A- or B-). In this process, non-crystalline helices were probably packed with water molecules to form new crystal units, thereby enhancing the overall concentration of starch crystallinity. In particular, a fraction of the monoclinic crystal units of the A-type starches encapsulated water molecules during hydration, leading to the outward movement of starch helices. Such movement resulted in the transformation of monoclinic units into hexagonal units, which was associated with the B-type crystallites. Hence, the hydration under ambient conditions could enhance the B-polymorphic features for both A-type and B-type starches. The new knowledge obtained here may guide the design of biopolymer-based liquid crystal materials with controlled lattice regularity and demanded features.
Item Type: | Journal Article | |||||||||||||||||||||
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Subjects: | T Technology > TP Chemical technology | |||||||||||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | |||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Starch -- Hydration, Starch -- Structure | |||||||||||||||||||||
Journal or Publication Title: | International Journal of Biological Macromolecules | |||||||||||||||||||||
Publisher: | Elsevier | |||||||||||||||||||||
ISSN: | 0141-8130 | |||||||||||||||||||||
Official Date: | October 2017 | |||||||||||||||||||||
Dates: |
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Volume: | 103 | |||||||||||||||||||||
Page Range: | pp. 152-157 | |||||||||||||||||||||
DOI: | 10.1016/j.ijbiomac.2017.05.008 | |||||||||||||||||||||
Status: | Peer Reviewed | |||||||||||||||||||||
Publication Status: | Published | |||||||||||||||||||||
Access rights to Published version: | Restricted or Subscription Access | |||||||||||||||||||||
Date of first compliant deposit: | 11 March 2019 | |||||||||||||||||||||
Date of first compliant Open Access: | 11 March 2019 | |||||||||||||||||||||
RIOXX Funder/Project Grant: |
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