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

Author:

Poljanšek Ida1,Oven Primož1,Vek Viljem1,Raitanen Jan-Erik2,Hemming Jarl2,Willför Stefan2

Affiliation:

1. Department of Wood Science and Technology, Biotechnical Faculty , University of Ljubljana , Jamnikarjeva 101 , Ljubljana SI-1000 , Slovenia

2. Johan Gadolin Process Chemistry Centre, Åbo Akademi University (AAU) , Turku/Åbo , Finland

Abstract

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.

Publisher

Walter de Gruyter GmbH

Subject

Biomaterials

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4. Conde, E., Fang, W., Hemming, J., Willför, S., Domínguez, H., Parajó, J. (2014) Recovery of bioactive compounds from Pinus pinaster wood by consecutive extraction stages. Wood Sci. Technol. 48:311–323.

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