Application of Untargeted Metabolomics to Determine Volatile Compounds from the Spanish Plant Arctostaphylos uva-ursi Used as Tea

One-hundred and seven different volatile compounds were identified in the samples of Arctostaphylos uva-ursi collected from nine locations Spain. This plant is commonly brewed used as tea. Volatile profile was detected using solid-phase microextraction gas chromatography-mass spectrometry. The most interesting an antioxidant capacity point view esters, phenols, aromatics compounds. All discriminated by principal component analysis. insolation altitude harvest areas, latent structures considered for interpretation results. Discriminant analysis applied to control type concentration metabolites determine best profiles origin. Moreover, a heatmap displayed correlations between discriminant led 20 quality markers being analysed plants. strongest obtained Pina de Montalgrao Loarre (collected September) ORAC (33.11 ± 0.61 g Trolox/g sample) DPPH (IC50 = 711 12 µg/g) methods, respectively. with highest total phenolic content September (171.9 19.4 mg GAE/g DW) November (177.1 11.0 DW).