Petra Bajerova
University of Pardubice, Czech Republic.
Title: Differentiation of Siberian and European larch Based on Volatile Organic Compounds Fingerprints.
Biography
Biography: Petra Bajerova
Abstract
An optimized headspace solid-phase micro extraction method coupled with gas chromatography and a flame ionization detector (HS-SPME/FID) was used to distinguish between larch wood originating from Central Europe and larch wood originating from Siberia. For both types of larch, variability was found in the composition of volatile organic compounds as well as in the intensities of volatile compounds in the chromatograms. Differences between larch trees could be influenced by various factors such as genetic, environmental and spatial factors. The optimized method was used to measure 82 samples of European and Siberian larches. Volatile organic compounds fingerprints were characterized by calculating retention indices for each compound. Statistical evaluation of retention indices obtained from VOC fingerprints was performed using multivariate regression with dimension reduction - orthogonal projection to latent structure (OPLS). This approach was able to distinguish the correct origin of all tested larch wood samples. Thus, the analysis of VOC fingerprints by HS/SPME-GC/FID in combination with OPLS is a useful tool for distinguishing between European larch and Siberian larch wood.