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

Ida Poljanšek, Primož Oven, Viljem Vek, Jan-Erik Raitanen, Jarl Hemming, Stefan Willför

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    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.
    Original languageUndefined/Unknown
    Pages (from-to)475–484
    JournalHolzforschung
    Volume73
    Issue number5
    DOIs
    Publication statusPublished - 2019
    MoE publication typeA1 Journal article-refereed

    Keywords

    • non-chlorinated solvents
    • pinosylvin
    • Extraction
    • knotwood

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