Isolation of pure pinosylvins from industrial knotwood residue with non-chlorinated solvents

A1 Journal article (refereed)


Internal Authors/Editors


Publication Details

List of Authors: Ida Poljanšek, Primož Oven, Viljem Vek, Jan-Erik Raitanen, Jarl Hemming, Stefan Willför
Publisher: Walter de Gruyter GmbH
Publication year: 2019
Journal: Holzforschung
Volume number: 73
Issue number: 5
Start page: 475
End page: 484
ISSN: 0018-3830
eISSN: 1437-434X


Abstract

The aim of the study was to find appropriate non-chlorinated solvent systems for the extraction and separation of pure pinosylvin (PS) and pinosylvin monomethylether (PSMME) from Scots pine/Norway spruce wood residues. The extraction was performed in a pressurized solvent extractor and the purification and isolation of pure substances was done by flash chromatography. More precisely, pure PS was isolated via sequential flash chromatography in two repetitions in the gradient mode of the mobile phase, with cylcohexane (CX) and ethylacetate (EtOAc), beginning with 100% CX and ending up with 100% EtOAc. The extractives were qualitatively and quantitatively analyzed in terms of PS and PSMME contents by gas chromatography-flame ionization detector (GC-FID), gas chromatography-mass spectrometry (GC-MS), high-performance liquid chromatography (HPLC) and proton nuclear magnetic resonance (1H-NMR) spectroscopy.


Keywords

Extraction, knotwood, non-chlorinated solvents, pinosylvin

Last updated on 2020-28-05 at 03:57