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. 2022 Nov 9;27(22):7700. doi: 10.3390/molecules27227700

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© 2022 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 (https://creativecommons.org/licenses/by/4.0/).

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Antioxidant activity of Hyssopus and Calendula water extracts and their mediated silver nanoparticles according to the determination method, i.e., DPPH*, FRAP**, and ABTS***. Note: Values are means ± SD of triplicates (n = 3). Means within the same antioxidant activity assay method with different superscript letters (^a,b,c,d) are significantly different (one-way ANOVA and Tukey’s test, p ≤ 0.05). SD—standard deviation; DW—on a dry weight basis. (A) Extracts and silver nanoparticles diluted in water prior to assay, (B) extracts and silver nanoparticles diluted in acidified 80% methanol prior to assay.