| Title: | Identification of odorants in wood of Calocedrus decurrens (Torr.) Florin by aroma extract dilution analysis and two-dimensional gas chromatography-mass spectrometry/olfactometry |
| Author(s): | Schreiner L; Loos HM; Buettner A; |
| Address: | "Professorship for Aroma Research, Emil Fischer Center, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universitat Erlangen-Nurnberg, Henkestrasse 9, 91054, Erlangen, Germany. Department Sensory Analytics, Fraunhofer Institute for Process Engineering and Packaging IVV, Giggenhauser Strasse 35, 85354, Freising, Germany. Professorship for Aroma Research, Emil Fischer Center, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universitat Erlangen-Nurnberg, Henkestrasse 9, 91054, Erlangen, Germany. andrea.buettner@ivv.fraunhofer.de. Department Sensory Analytics, Fraunhofer Institute for Process Engineering and Packaging IVV, Giggenhauser Strasse 35, 85354, Freising, Germany. andrea.buettner@ivv.fraunhofer.de" |
| DOI: | 10.1007/s00216-017-0314-x |
| ISSN/ISBN: | 1618-2650 (Electronic) 1618-2642 (Linking) |
| Abstract: | "General emissions of volatile organic compounds from wood are well investigated, but only limited information is available on the odor-active substances contained therein. To close this gap, we aimed at specifically elucidating the odorous constituents of wood from incense cedar [Calocedrus decurrens (Torr.) Florin]; this material is commonly used for the production of a range of products such as pencils and interior accessories. Targeted odorant analysis requires specialized techniques combining modern odorant analytical tools with human-sensory evaluation. Following this concept, the odor profile of the wood sample was first evaluated by human-sensory analyses. Then, the most potent wood odorants were characterized by means of gas chromatography-olfactometry and ranked according to their odor potency via aroma extract dilution analysis. With use of this approach, more than 60 odorous substances were detected, and the 22 most potent odorants were successfully identified by gas chromatography-mass spectrometry/olfactometry and two-dimensional gas chromatography-mass spectrometry/olfactometry. Among the main odorants found were a series of terpenes, several degradation products of fatty acids, and a number of odorants with a phenolic core moiety. Five odorants are reported here for the first time as wood odorants, such as gamma-octalactone and 3-phenylpropanoic acid; thymoquinone was demonstrated for the first time to have a pencil-like odor quality" |
| Keywords: | Adult Benzoquinones/analysis Cupressaceae/*chemistry Female Gas Chromatography-Mass Spectrometry/*methods Humans Male Middle Aged Odorants/*analysis Olfactometry/*methods Volatile Organic Compounds/analysis Wood/*chemistry Young Adult 2-Isopropyl-5-methyl; |
| Notes: | "MedlineSchreiner, Linda Loos, Helene M Buettner, Andrea eng Germany 2017/04/13 Anal Bioanal Chem. 2017 Jun; 409(15):3719-3729. doi: 10.1007/s00216-017-0314-x. Epub 2017 Apr 11" |
