Jump to main content
Jump to site search

Issue 11, 2013
Previous Article Next Article

Depolymerisation of condensed tannins in ethanol as a gateway to biosourced phenolic synthons

Author affiliations

Abstract

Plant polyphenols are potential sources of substitutes for phenolic petrochemicals, such as bisphenol A. Among them, condensed tannins are the most abundant after lignins in terrestrial plants. They are especially encountered in agro-industrial residues (i.e. fruit marc) and unprocessed biomass (i.e. barks, needles, and leaves). However, this class of biopolymers requires a depolymerisation step prior to their industrial use as fine chemicals. In this work, phenolic synthons were produced by depolymerisation of an industrial grape seed extract of condensed tannins at the multigram scale. The optimization of the depolymerisation reaction through the selection of the most suitable solvent, nucleophilic agent and temperature allowed the reaction to be carried out at mild temperature (40 °C), in two hours, using ethanol as a solvent. The isolation of compounds of interest was performed by precipitation in ethyl acetate followed by a simple adsorption/desorption step on a polyamide cartridge using ethanol as an eluent.

Graphical abstract: Depolymerisation of condensed tannins in ethanol as a gateway to biosourced phenolic synthons

Back to tab navigation

Publication details

The article was received on 02 Jul 2013, accepted on 23 Aug 2013 and first published on 23 Aug 2013


Article type: Paper
DOI: 10.1039/C3GC41281D
Citation: Green Chem., 2013,15, 3268-3275
  •   Request permissions

    Depolymerisation of condensed tannins in ethanol as a gateway to biosourced phenolic synthons

    L. Roumeas, C. Aouf, E. Dubreucq and H. Fulcrand, Green Chem., 2013, 15, 3268
    DOI: 10.1039/C3GC41281D

Search articles by author

Spotlight

Advertisements