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J Agric Food Chem

Title:		"Characterization of Odorants in Southern Mountain Mint, Pycnanthemum pycnanthemoides"
Author(s):		Dein M; Munafo JP;
Address:		"Department of Food Science, University of Tennessee, Knoxville, Tennessee 37996, United States"
Journal Title:		J Agric Food Chem
Year:		2022
Volume:		20220801
Issue:		31
Page Number:		9722 - 9729
DOI:		10.1021/acs.jafc.2c02860
ISSN/ISBN:		1520-5118 (Electronic) 0021-8561 (Linking)
Abstract:		"Southern mountain mint, Pycnanthemum pycnanthemoides (Leavenw.) Fernald, is a mountain mint species endemic to the southeastern United States. The odorants responsible for the plant's odor have not been previously characterized. In this study, 28 odorants were identified in a high-vacuum distillate of P. pycnanthemoides employing gas chromatography-olfactometry and gas chromatography-mass spectrometry. Flavor dilution (FD) factors were determined by aroma extract dilution analysis. Ten odorants with FD factors >/=16 were quantitated by stable isotope dilution assays, odor activity values (OAVs) were calculated, and the stereochemistry of chiral odorants was determined. Odorants with OAV >/=1 included beta-ionone (floral, violet; OAV 310), piperitenone (mint; OAV 100), piperitone (mint; OAV 87), linalool (floral, citrus; OAV 45), myrcene (terpeny; OAV 35), (R)-(+)-pulegone (mint, medicinal; OAV 18), (2S,5R)-(-)-menthone (mint, fresh; OAV 6.6), and 1,8-cineole (eucalyptus; OAV 4.0). An odor simulation model based on the quantitative analysis was a close match to the sensory attributes of an aqueous infusion of dried P. pycnanthemoides. The study's results establish insights into the complex odor profile of P. pycnanthemoides and provide a foundation for future studies on the odor variability within P. pycnanthemoides and other species of the Pycnanthemum genus"
Keywords:		Flavoring Agents/chemistry Gas Chromatography-Mass Spectrometry *Lamiaceae *Mentha Odorants/analysis Olfactometry *Volatile Organic Compounds/chemistry Pycnanthemum pycnanthemoides aroma extract dilution analysis southern mountain mint stable isotope dilu;
Notes:		"MedlineDein, Melissa Munafo, John P Jr eng 2022/08/02 J Agric Food Chem. 2022 Aug 10; 70(31):9722-9729. doi: 10.1021/acs.jafc.2c02860. Epub 2022 Aug 1"