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. 2020 Sep 22;13(9):262. doi: 10.3390/ph13090262

Table 3.

Antioxidant activity of Fragaria extracts in four assays, μM trolox-eq./g of dry weight ± S.D.

Assay a F. viridis F. vesca (Ripe) F. ananassa (Ripe)
Unripe Intermediate Ripe
DPPH 29.2 ± 0.6 d,e 28.4 ± 0.5 c 27.5 ± 0.5 c,d 15.2 ± 0.3 b 9.3 ± 0.2 a
ABTS 35.1 ± 0.8 h,i 35.3 ± 0.8 h 36.2 ± 0.9 i 19.7 ± 0.4 f,g 14.7 ± 0.3 f
FRAP 42.6 ± 1.0 l 45.4 ± 1.0 l,m 47.1 ± 1.0 m 27.1 ± 0.5 k 21.1 ± 0.4 j
ORAC 33.6 ± 0.8 p,q 32.8 ± 0.7 o,p 33.0 ± 0.8 p 25.1 ± 0.5 n,o 18.9 ± 0.4 n

a DPPH—scavenging capacity against 2,2-diphenyl-1-picrylhydrazyl radical; ABTS—scavenging capacity against 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) cation radical; FRAP—ferric reducing antioxidant power; and ORAC—oxygen radical absorbance capacity. Averages ± standard deviation (S.D.) were obtained from five different experiments. Values with different letters (a–q) indicate statistically significant differences among groups at p < 0.05 by one-way ANOVA.