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Lookup NU author(s): Professor David XieORCiD
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
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.
Author(s): Qiao D, Zhang B, Huang J, Xie F, Wang DK, Jiang F, Zhao S, Zhu J
Publication type: Article
Publication status: Published
Journal: International Journal of Biological Macromolecules
Year: 2017
Volume: 103
Pages: 152-157
Print publication date: 01/10/2017
Online publication date: 02/05/2017
Acceptance date: 02/05/2017
Date deposited: 31/08/2023
ISSN (print): 0141-8130
ISSN (electronic): 1879-0003
Publisher: Elsevier
URL: https://doi.org/10.1016/j.ijbiomac.2017.05.008
DOI: 10.1016/j.ijbiomac.2017.05.008
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