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. 2020 Jul 24;9(8):663. doi: 10.3390/antiox9080663

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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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Ion intensity evolution in high resolution MS spectra. Intensity for the control wine aged 2018 and the ageing tests (a). Heat test −60 °C (b). Hydrogen peroxide test (c). Laccase tests. Results are given for each [M+H]⁺ ion compared to the 2018 sample. Intensities are expressed as mean values with standard deviation. Different letters indicate a significant difference (Tukey test, α = 0.05) between samples for the same [M+H]⁺ ion. Data are available in supplementary data: Tables S20, S23–S25.