Effect of oxygen glow plasma on supramolecular and molecular structures of starch and related mechanism

Zhang, Binjia, Xiong, Shixuan, Li, Xiaoxi, Li, Lin, Xie, Fengwei and Chen, Ling (2014) Effect of oxygen glow plasma on supramolecular and molecular structures of starch and related mechanism. Food Hydrocolloids, 37 69-76. doi:10.1016/j.foodhyd.2013.10.034


Author Zhang, Binjia
Xiong, Shixuan
Li, Xiaoxi
Li, Lin
Xie, Fengwei
Chen, Ling
Title Effect of oxygen glow plasma on supramolecular and molecular structures of starch and related mechanism
Journal name Food Hydrocolloids   Check publisher's open access policy
ISSN 0268-005X
1873-7137
Publication date 2014-06-01
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.foodhyd.2013.10.034
Volume 37
Start page 69
End page 76
Total pages 8
Place of publication Amsterdam, The Netherlands
Publisher Elsevier BV
Language eng
Subject 1106 Human Movement and Sports Science
1500 Chemical Engineering
1600 Chemistry
Abstract The effect of oxygen glow plasma (OGP) on the supramolecular structures (fractal, lamellar, and crystalline characteristics) and molecular characteristics (molecular weight, mean square radius of gyration) of potato and corn starches were investigated, and the related mechanism was explored. Compared with native corn starch, native potato starch possessed more compact scattering objects which however displayed a weaker resistance to OGP. For both starches, while the OGP treatment simultaneously influenced the crystalline and amorphous materials, there was a higher degree of destruction to the amorphous materials at the initial period. Both starches displayed a typical positive deviation from Porod's law. Interestingly, potato starch suffered a higher degree of destruction to both of its supramolecular and molecular characteristics (particularly, a higher degree of decrease in the molecular weight). This can be attributed to the large amount of inter-helical water molecules which could be induced by OGP, and to the fracture of the glycoside bonds in the solid starch granules which happened in a non-random way and close to the chain center.
Keyword Corn starch
Molecular structure
Oxygen glow plasma
Potato starch
Supramolecular structure
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
Australian Institute for Bioengineering and Nanotechnology Publications
 
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