Binding of polyphenols to plant cell wall analogues - part 1: Anthocyanins

Padayachee, A., Netzel, G., Netzel, M., Day, L., Zabaras, D., Mikkelsen, D. and Gidley, M. (2012) Binding of polyphenols to plant cell wall analogues - part 1: Anthocyanins. Food Chemistry, 134 1: 155-161. doi:10.1016/j.foodchem.2012.02.082

Author Padayachee, A.
Netzel, G.
Netzel, M.
Day, L.
Zabaras, D.
Mikkelsen, D.
Gidley, M.
Title Binding of polyphenols to plant cell wall analogues - part 1: Anthocyanins
Journal name Food Chemistry   Check publisher's open access policy
ISSN 0308-8146
Publication date 2012-09
Sub-type Article (original research)
DOI 10.1016/j.foodchem.2012.02.082
Volume 134
Issue 1
Start page 155
End page 161
Total pages 7
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2013
Language eng
Abstract Anthocyanins are located within the vacuole of plant cells, and are released following cell rupture during eating or processing at which time they first come into contact with the plant cell wall. The extent of anthocyanin-cell wall interaction was investigated by monitoring the rate of anthocyanin depletion in the presence of pure cellulose or cellulose-pectin composites as cell wall models. It was found that anthocyanins interact with both cellulose and pectin over a two-stage process with initially (mins-hours) 13-18% of anthocyanins binding to cellulose or cellulose/pectincomposites. With prolonged exposure (days-weeks), a gradual increase in anthocyanin binding occurs, possibly due to anthocyanins stacking on top of a base layer. Binding of acylated and non-acylated anthocyanins followed a similar pattern with slightly more (5-10%) binding of the acylated forms. Composites with the highest pectin content had the greatest anthocyanin binding suggesting the existence of both ionic interactions (with pectin) and hydrophobic interactions (with cellulose) of anthocyanin with plant cell walls.
Keyword Plant cell wall
Purple carrot
Gluconoacetobacter xylinus
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online: 24 February 2012.

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
Centre for Nutrition and Food Sciences Publications
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