A new study of starch gelatinization under shear stress using dynamic mechanical analysis

Xie, Fengwei, Yu, Long, Chen, Ling and Li, Lin (2008) A new study of starch gelatinization under shear stress using dynamic mechanical analysis. Carbohydrate Polymers, 72 2: 229-234. doi:10.1016/j.carbpol.2007.08.007


Author Xie, Fengwei
Yu, Long
Chen, Ling
Li, Lin
Title A new study of starch gelatinization under shear stress using dynamic mechanical analysis
Journal name Carbohydrate Polymers   Check publisher's open access policy
ISSN 0144-8617
1879-1344
Publication date 2008-05-05
Year available 2007
Sub-type Article (original research)
DOI 10.1016/j.carbpol.2007.08.007
Volume 72
Issue 2
Start page 229
End page 234
Total pages 6
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Language eng
Formatted abstract
A new technique for studying starch gelatinization under shear stress using dynamic mechanical analysis (DMA) with shear sandwich mode is reported. Rice starch was used as the model material in the experimental work. The physical meaning of storage modulus G′, loss modulus G′′ and tangent of the phase angle tan δ, measured during starch gelatinization, is discussed. The effects of various factors, such as sample preparation and measurement conditions, on the measured results are discussed. A sharp peak of tan δ was detected during heating starch, which well represents the starch gelatinization process under shear stress. Comparison between the results detected by DMA and differential scanning calorimetry was used to interpret the processes and mechanisms of starch gelatinization. Results showed that variations in physical properties occurred both before thermal transition started and after thermal transition was complete. DMA has proved to be a convenient technique to study starch gelatinization under shear stress. One of the important advantages of this technique is it can be used to study starch gelatinization at low moisture contents (≤50%) under shear stress.
© 2007 Elsevier Ltd. All rights reserved.
Keyword Gelatinization
Shear
Starch
Rice
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes Available online 17 August 2007

Document type: Journal Article
Sub-type: Article (original research)
Collection: Australian Institute for Bioengineering and Nanotechnology Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 28 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 35 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Thu, 10 Mar 2011, 13:23:39 EST by David Fengwei Xie on behalf of Aust Institute for Bioengineering & Nanotechnology