Supramolecular structural evolutions of maize starch hydrothermally treated in excess water

Zu, Yanyan, Zhang, Binjia, Chen, Ling, Xie, Fengwei, Li, Lin and Li, Xiaoxi (2016) Supramolecular structural evolutions of maize starch hydrothermally treated in excess water. Starch, 68 3-4: 365-373. doi:10.1002/star.201500028


Author Zu, Yanyan
Zhang, Binjia
Chen, Ling
Xie, Fengwei
Li, Lin
Li, Xiaoxi
Title Supramolecular structural evolutions of maize starch hydrothermally treated in excess water
Journal name Starch   Check publisher's open access policy
ISSN 1521-379X
0038-9056
Publication date 2016-04-01
Year available 2016
Sub-type Article (original research)
DOI 10.1002/star.201500028
Open Access Status Not Open Access
Volume 68
Issue 3-4
Start page 365
End page 373
Total pages 9
Place of publication Weinheim, Germany
Publisher Wiley-VCH Verlag
Language eng
Formatted abstract
Supramolecular structural changes of maize starch as affected by hydrothermal treatment in excess water were investigated. At a temperature slightly higher than the onset (To) of gelatinization endotherm (G), an increase in the size of the cavity at the granule core and a sharp decrease in the ordering degree of the semi-crystalline lamellae occurred, together with the scattering objects apparently becoming looser. When the temperature approached close to the peak temperature (Tp) of endotherm G (70°C), the semi-crystalline lamellae disappeared, accompanied by the emergence of a dual fractal structure. This suggests that the molecules of swollen maize starch displayed inhomogeneity on nanoscale, with a mass fractal structure at a higher scale level constituted by the scattering objects at a lower scale level. Additionally, it is proposed that a reduction in starch crystallites could enhance the degree of mixing between the crystalline and amorphous materials. The results enable a better understanding of starch supramolecular structural evolutions during the hydrothermal treatment in excess water.
Keyword Hydrothermal treatment
Maize starch
Supramolecular structural changes
X-ray scattering
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID 31130042
2012BAD33B04
20120172110014
2012CXZD0006
NCET-12-0193
2013ZG0009
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
Australian Institute for Bioengineering and Nanotechnology Publications
 
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