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Molecules

Title:		Marker Substances in the Aroma of Truffles
Author(s):		Epping R; Bliesener L; Weiss T; Koch M;
Address:		"Division of Organic Trace Analysis and Food Analysis, Bundesanstalt fur Materialforschung und -Prufung, 12489 Berlin, Germany. Sglux SolGel Technologies GmbH, 12489 Berlin, Germany"
Journal Title:		Molecules
Year:		2022
Volume:		20220813
Issue:		16
Page Number:		-
DOI:		10.3390/molecules27165169
ISSN/ISBN:		1420-3049 (Electronic) 1420-3049 (Linking)
Abstract:		"The aim of this study was to identify specific truffle marker substances within the truffle aroma. The aroma profile of different truffle species was analyzed using static headspace sampling with gas chromatography mass spectrometry analysis (SHS/GC-MS). Possible marker substances were identified, taking the additional literature into account. The selected marker substances were tested in an experiment with 19 truffle dogs. The hypothesis 'If trained truffle dogs recognize the substances as supposed truffles in the context of an experiment, they can be regarded as specific' was made. As it would be nearly impossible to investigate every other possible emitter of the same compounds to determine their specificity, this hypothesis was a reasonable approximation. We were interested in the question of what it is the dogs actually search for on a chemical level and whether we can link their ability to find truffles to one or more specific marker substances. The results of the dog experiment are not as unambiguous as could have been expected based on the SHS/GC-MS measurements. Presumably, the truffle aroma is mainly characterized and perceived by dogs by dimethyl sulfide and dimethyl disulfide. However, as dogs are living beings and not analytical instruments, it seems unavoidable that one must live with some degree of uncertainty regarding these results"
Keywords:		Animals *Ascomycota/chemistry Dogs Gas Chromatography-Mass Spectrometry/methods Odorants/analysis Olfactometry *Volatile Organic Compounds/analysis canine olfactometry gas chromatography mass spectrometry truffle volatile organic compounds;
Notes:		"MedlineEpping, Ruben Bliesener, Lilly Weiss, Tilman Koch, Matthias eng 925 487/Landwirtschaftliche Rentenbank/ Switzerland 2022/08/27 Molecules. 2022 Aug 13; 27(16):5169. doi: 10.3390/molecules27165169"