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  • Solid state NMR and IR char...
    Santoni, Ilaria; Callone, Emanuela; Sandak, Anna; Sandak, Jakub; Dirè, Sandra

    Carbohydrate polymers, 03/2015, Volume: 117
    Journal Article

    •FT-IR and NMR spectroscopies were used for the discrimination of samples with different geographical provenance.•T1ρ(H) values, obtained from variable contact time NMR experiments highlighted the differences between wood groups.•Principal component analysis of NMR and IR data allowed the most effective discrimination of wood due to provenance. 13C nuclear magnetic resonance and mid-infrared spectroscopies were used for characterizing changes in the chemical structure of wood polymers (cellulose, hemicellulose and lignin) in relation to the tree growth location. Samples of three provenances in Europe (Finland, Poland and Italy) were selected for studies. The requirement was to use untreated solid wood samples to minimize any manipulation to the nanostructure of native wood. The results confirm that the chemical and physical properties of samples belonging to the same wood species (Picea abies Karst.) differ due to the origin. Both FT-IR and dynamic NMR spectroscopies were able to correctly discriminate samples originating from three different provenances in Europe. Such methods might be very useful for both, research and understanding of wood microstructure and its variability due to the growth conditions.