Table 3.

ROS/RNS of both olive byproduct extracts (IC₅₀, μg/mL).

	HOCl	O2●−	NO●
O. europaea byproduct extracts
O20	33 ± 2 a	29 ± 2 a	1.7 ± 0.1 a
O30	34 ± 3 a	20.0 ± 0.6 a	1.7 ± 0.1 a
Positive controls
Gallic acid	4.0 ± 0.4 b	6.0 ± 0.5 b	0.20 ± 0.03 b
Catechin	0.42 ± 0.03 b	43 ± 4 c	0.95 ± 0.04 c

IC₅₀ = In vitro concentration required to reduce the reactivity of the tested reactive species by 50% (mean ± standard error of mean). Different letters (^a, ^b, ^c) in the same column indicate significant differences between extracts and positive controls (p < 0.05).