Bioassay-Guided Isolation and Antioxidant Evaluation of Flavonoid Compound from Aerial Parts of Lippia nodiflora L.

Table 2

Antioxidant potentials of extract, compound, and BHT at different concentrations examined by FRAP assay.

Sample	Test concentration; (μg/mL)	FRAP value; (μM Fe(II)/g)^a
Methanol extract	10	23.4 ± 0.54
	20	27.5 ± 1.24
	30	52.5 ± 0.69
	40	63.9 ± 0.70
	50	71.1 ± 1.69
Compound	10	11.1 ± 1.00
	20	23.6 ± 0.57
	30	35.1 ± 0.63
	40	42.7 ± 0.58
	50	51.7 ± 0.83
BHT	10	20.7 ± 0.70
	20	30.0 ± 0.72
	30	48.5 ± 0.77
	40	54.7 ± 0.54
	50	63.1 ± 0.20

aThe values are the average of three independent experiments.