Nicol, Thomas W.J., Isobe, Noriyuki, Clark, James H. orcid.org/0000-0002-5860-2480 et al. (2 more authors) (2019) The mechanism of salt effects on starch gelatinization from a statistical thermodynamic perspective. Food Hydrocolloids. pp. 593-601. ISSN 0268-005X
Abstract
Understanding the gelatinization of starch requires a theoretical framework that can extract microscopic information from the literature's abundant experimental data in a quantitative manner. Recent developments in statistical thermodynamics have been adapted here to extract the starch-water and starch-salt affinity changes that occur during gelatinization, in a manner beyond the capabilities of traditional polymer theory. We have clarified the mechanism that leads to the increases of salt binding upon gelatinization at high concentrations. Contrary to previous assumptions, salt-starch affinity has been shown to be predominant in the salt effect on gelatinization over water structure contributions. How the temperature of gelatinization depends on salt concentration can be rationalized by the exclusion of salts at low salt concentrations from the gelatinized state and salt anion accessibility to the inside of the starch granule at increased concentration. Finally, the salt anion accessibility informs whether gelatinization progresses from the hilum or the periphery of the starch granule.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2018 Elsevier Ltd. All rights reserved. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. |
Dates: |
|
Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Chemistry (York) |
Depositing User: | Pure (York) |
Date Deposited: | 22 Aug 2018 09:30 |
Last Modified: | 03 Apr 2025 23:10 |
Published Version: | https://doi.org/10.1016/j.foodhyd.2018.08.042 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1016/j.foodhyd.2018.08.042 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:134878 |
Download
Filename: Food_Hydrocolloids_Nicol_revision_03.docx
Description: Food_Hydrocolloids_Nicol_revision_03
Licence: CC-BY-NC-ND 2.5