Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/131603
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Applying nanoparticle tracking analysis to characterize the polydispersity of aggregates resulting from tannin-polysaccharide interactions in wine-like media |
Author: | Li, S. Wilkinson, K.L. Mierczynska-Vasilev, A. Bindon, K.A. |
Citation: | Molecules, 2019; 24(11):2100-1-2100-18 |
Publisher: | MDPI AG |
Issue Date: | 2019 |
ISSN: | 1420-3049 1420-3049 |
Statement of Responsibility: | Sijing Li, Kerry L. Wilkinson, Agnieszka Mierczynska-Vasilev and Keren A. Bindon |
Abstract: | Interactions between grape seed tannin and either a mannoprotein or an arabinogalactan in model wine solutions of different ethanol concentrations were characterized with nanoparticle tracking analysis (NTA), UV-visible spectroscopy and dynamic light scattering (DLS). NTA results reflected a shift in particle size distribution due to aggregation. Furthermore, the light scattering intensity of each tracked particle measured by NTA demonstrated the presence of aggregates, even when a shift in particle size was not apparent. Mannoprotein and arabinogalactan behaved differently when combined with seed tannin. Mannoprotein formed large, highly light-scattering aggregates, while arabinogalactan exhibited only weak interactions with seed tannin. A 3% difference in alcohol concentration of the model solution (12 vs. 15% v/v) was sufficient to affect the interactions between mannoprotein and tannin when the tannin concentration was high. In summary, this study showed that NTA is a promising tool for measuring polydisperse samples of grape and wine macromolecules, and their aggregates under wine-like conditions. The implications for wine colloidal properties are discussed based on these results. |
Keywords: | mannoprotein arabinogalactan seed tannin aggregation nanoparticle tracking analysis |
Description: | Published: 3 June 2019 |
Rights: | © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
DOI: | 10.3390/molecules24112100 |
Grant ID: | http://purl.org/au-research/grants/arc/IC130100005 |
Published version: | http://dx.doi.org/10.3390/molecules24112100 |
Appears in Collections: | Agriculture, Food and Wine publications ARC Training Centre for Innovative Wine Production publications Aurora harvest 8 |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
hdl_131603.pdf | Published version | 1.34 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.