Chemical Composition, Antioxidant, and Antimicrobial Activities of Lichen Umbilicaria cylindrica (L.) Delise (Umbilicariaceae)

Table 3

The antioxidant activity of the examined extracts.

Plant species	^aIC50 (μg/mL)
	DPPH scavenging activity	Inhibitory activity against lipid peroxidation	Metal chelating activity	Hydroxyl radical scavenging activity
Methanol extract	34.45±1.15	35.36±1.68	45.91±0.88	89.11±0.29
Chloroform extract	31.34±1.10	29.31±0.65	39.46±0.78	83.34±0.35
Gallic acid	3.79±0.69	255.43±11.68	—	59.14±1.10
Ascorbic acid	6.05±0.34	>1000	—	160.55±2.31
BHT	15.61±1.26	1.00±0.23	—	33.92±0.79
α-Tocopherol	—	0.48±0.05	—	—

^aIC₅₀ values were determined by nonlinear regression analysis. Results are mean values ± SD from three experiments.