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Talanta

Title:		Molecular and sensory characterization of odorants in Cembran pine (Pinus cembra L.) from different geographic regions
Author(s):		Ghadiriasli R; Mahmoud MAA; Wagenstaller M; van de Kuilen JW; Buettner A;
Address:		"Chair of Aroma and Smell Research, Friedrich-Alexander-Universitat Erlangen-Nurnberg, Emil Fischer Center, Department of Chemistry and Pharmacy, Henkestrasse 9, 91054, Erlangen, Germany; Department Sensory Analytics, Fraunhofer Institute for Process Engineering and Packaging IVV, Giggenhauser Strasse 35, 85354, Freising, Germany. Department Sensory Analytics, Fraunhofer Institute for Process Engineering and Packaging IVV, Giggenhauser Strasse 35, 85354, Freising, Germany; Agricultural Biochemistry Department, Faculty of Agriculture, Ain Shams University, P.O. Box 68, Hadayek Shobra, 11241, Cairo, Egypt. Department Sensory Analytics, Fraunhofer Institute for Process Engineering and Packaging IVV, Giggenhauser Strasse 35, 85354, Freising, Germany. TUM - Wood Technology, Winzererstrasse 45, 80797, Munich, Germany; Department Engineering Structures, Faculty of Civil Engineering and Geosciences, TU Delft, the Netherlands. Chair of Aroma and Smell Research, Friedrich-Alexander-Universitat Erlangen-Nurnberg, Emil Fischer Center, Department of Chemistry and Pharmacy, Henkestrasse 9, 91054, Erlangen, Germany; Department Sensory Analytics, Fraunhofer Institute for Process Engineering and Packaging IVV, Giggenhauser Strasse 35, 85354, Freising, Germany. Electronic address: andrea.buettner@ivv.fraunhofer.de"
Journal Title:		Talanta
Year:		2020
Volume:		20200713
Issue:
Page Number:		121380 -
DOI:		10.1016/j.talanta.2020.121380
ISSN/ISBN:		1873-3573 (Electronic) 0039-9140 (Linking)
Abstract:		"The wood of the Cembran pine (Pinus cembra L.), also known as Swiss pine, Arolla pine or Stone pine, has a prominent and long-lasting odor which has been reported to relieve stress in humans. However, the odorants responsible for this are unknown and it is also unclear whether the odor profile depends on the origin of the trees, namely different geographical regions and pedoclimatic conditions. Therefore, in this study human sensory analyses together with isolation and analysis of the target odorants via solvent-assisted flavor evaporation were performed. Afterwards, comparative odor extract dilution analysis (cOEDA) was applied to investigate the odorous constituents of pinewood samples from forests in Austria and Italy. Specific odorants were thereby identified using one-dimensional and two-dimensional gas chromatography-mass spectrometry/olfactometry using two capillary columns with different polarities (DB-5 and DB-FFAP). In total, 103 odorants were detected with successful identification of 98 of these substances. The identified odorants were predominately monoterpenes and sesquiterpenes as well as organic acids. Several compounds including germacrene D, thymol, carvacrol, rotundone, beta-caryophyllene, alpha-humulene, cinnamaldehyde, and ethyl cinnamate are reported here for the first time as odorous constituents of pinewood. Principal component analysis of the data obtained from sensory evaluation and cOEDA indicated that terpenes and sesquiterpenes were correlated with higher hedonic rates for the wood samples. Moreover, a Mantel test between the geographical distances of the trees and their sensory and cOEDA values demonstrated that the origin of the trees had a significant impact on the sensory characteristics of the wood, in agreement with the differences in the relative proportions of different volatile components. As such, the odor of Cembran pinewood is prone to variation but, yet, unique"
Keywords:		Gas Chromatography-Mass Spectrometry Humans Monoterpenes Odorants/analysis Olfactometry *Pinus *Volatile Organic Compounds/analysis Gas chromatography-olfactometry Mass spectrometry Odor extract dilution analysis Pinewood Terpene Volatile organic compound;
Notes:		"MedlineGhadiriasli, Rahil Mahmoud, Mohamed A A Wagenstaller, Maria van de Kuilen, Jan-Willem Buettner, Andrea eng Netherlands 2020/09/16 Talanta. 2020 Dec 1; 220:121380. doi: 10.1016/j.talanta.2020.121380. Epub 2020 Jul 13"