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. 2020 May 28;10(6):80. doi: 10.3390/life10060080

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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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Effects of AE and CHL on SIRT1/SIR2 (a) and total SOD (b) enzyme activities. Y-CTL was young yeast (on day 2 of cultivation) and A-CTL was aged yeast (on day 5 of cultivation). AE, almond extract (1 mg/mL). CHL: chlorogenic acid at 3 concentrations (CHL5, CHL10 and CHL25 corresponding to chlorogenic acid addition at 5, 10 and 25 µM, respectively). E-Resveratrol (RES, 10 µM) was used as control antiaging drug. In young yeast culture (Y), actual SIRT1/SIR2 enzyme activity was equal to 4564.4 FU/mg protein, whereas total SOD activity was 35.6 units/mg protein. The enzyme activity was expressed as a percentage of Y-CTL. Values are means ± standard deviations (SD) of 4 independent experiments. Different letters represent significant differences between the various extraction conditions (p < 0.05).