BOKU - Universität für Bodenkultur Wien - Forschungsinformationssystem

Logo BOKU-Forschungsportal

Gewählte Publikation:

Scholz, G; Windeisen, E; Liebner, F; Baucker, E; Bues, CT.
(2010): WOOD ANATOMICAL FEATURES AND CHEMICAL COMPOSITION OF PROSOPIS KUNTZEI FROM THE PARAGUAYAN CHACO
IAWA J. 2010; 31(1): 39-52.

Abstract:
Anatomical features for Prosopts kuntzei Harms were studied by light and scanning electron microscopy. The wood is mainly diffuse-porous with indistinct growth ring boundaries. Vessel diameter ranges between 11 to 193 mu m. The thick-walled fibres average 1275 mu m length Parenchyma bands are 66 to 1066 mu m apart. Heartwood extractives were studied in the vessels, rays and part of the fibres by means of scanning UV microspectrophotometry. The pyrolytic lignin content is 30.7%. The percentage of polyphenolic compunds, such as flavonoids, hydrolysable tannins and proanthocyanidins, is comparatively high at 58% Total extract contents were determined after organic solvent extractions (23.2%) and water extractions (24.9%). The FTIR spectroscopy showed nearly identical spectra for the methanol and water extracts, with characteristic absorptiono bands for aromatic substances at 1615 and 1520 cm(-1). The spectrum of the acetone extract differs only due to an additional but distinct absorption in the carbonyl range at 1695 cm(-1) GC/MS analyses revealed that in the acetone and methanol extracts, tetrahydroxy-flavan-3-ols (isomers of catechin and epicatechin) were the main constituents with a ratio of 25.3 and 27.6%.
Autor/innen der BOKU Wien:
Liebner Falk
BOKU Gendermonitor:


Find related publications in this database (Keywords)
Prosopts kuntzer
wood anatomy
chemical composition


© BOKU Wien Impressum