Neutral sugar side chains of pectins limit interactions with procyanidins - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Journal Articles Carbohydrate Polymers Year : 2014

Neutral sugar side chains of pectins limit interactions with procyanidins

Abstract

Interactions between seven hairy regions of pectins, rhamnogalacturonans II and arabinogalactan–proteins and procyanidins with different average degrees of polymerization, low (DP9) and high (DP30), were investigated by isothermal titration calorimetry and absorption analysis to study the impact of neutral sugar side chains of pectins on these associations. Associations between pectic fractions and procyanidins involved hydrophobic interactions and hydrogen bonds. No difference in association constants between various hairy regions and procyanidins DP9 was found. Nevertheless, arabinan chains showed lower association constants, and hairy regions of pectins with only monomeric side chains showed higher association with procyanidin DP30. Only very low affinities were obtained with rhamnogalacturonans II and arabinogalactan–proteins. Aggregation could be observed only with the procyanidins of DP30 and the protein-rich arabinogalactan–protein. Associations were obtained at both degrees of polymerization of the procyanidins, but differed depending on neutral sugar composition and the structure of pectic fractions.
Fichier principal
Vignette du fichier
2014 - LeBourvellec-Renard - 1_1.pdf (1.47 Mo) Télécharger le fichier
Origin Files produced by the author(s)
Loading...

Dates and versions

hal-02640610 , version 1 (28-05-2020)

Identifiers

Cite

Aude Watrelot, Carine Le Bourvellec-Samour, Anne Imberty, Catherine M.G.C. Renard. Neutral sugar side chains of pectins limit interactions with procyanidins. Carbohydrate Polymers, 2014, 99, pp.527-536. ⟨10.1016/j.carbpol.2013.08.094⟩. ⟨hal-02640610⟩
25 View
184 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More