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. 2020 May 3;25(9):2141. doi: 10.3390/molecules25092141

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Principal component analysis showing aged wine samples scores (A) and loadings (B), only loadings with score value >0.75 were shown. Loadings plot number correspond to: (F1) 2-Butanol, (F2) 1-Butanol, (F5) Phenyl ethyl alcohol, (F6) 1-Hexanol, (F8) cis-3-Hexenol, (F10) Isoamyl acetate, (F11) n-Hexyl acetate, (F12) Phenylethyl acetate, (F13) Ethyl butanoate, (F15) Ethyl hexanoate, (F16) Ethyl octanoate, (F19) 3-Methylbutanoic acid, (F20) Hexanoic acid, (F21)Octanoic acid, (F22) cis-Linalool oxide, (F23) trans-Linalool oxide, (F25)Terpinen-1-ol, (F26) Terpinen-4-ol, (F31) β-Citronellol, (F32) p-Menthane-1,8-diol, (F38) p-Cymene, (F39) Terpinolene, (F50) Benzyl alcohol, (B3) bound cis-3-Hexenol, (B8) bound α-Terpineol, (B9) bound β-Citronellol, (B11) bound Geraniol, (B12) bound Benzyl alcohol, (B14) bound Phenylethyl alcohol, B16) bound 3-oxo-α-Ionol, (B17) bound Methyl vanillate.