Flavonoids in Different Parts of Lysimachia clethroides Duby Extracted by Ionic Liquid: Analysis by HPLC and Antioxidant Activity Assay

Table 3

Antioxidant activity of the different extracts of L. clethroides.

Sample	DPPH		ABTS		FRAP
	Radical scavenging rate/%	IC50/μg⋅mL^−1	Radical scavenging rate/%	IC50/μg⋅mL^−1	TEAC/μmol⋅g^−1
Leaf’s methanol extract	93.91		97.01
Leaf’s ionic liquid extract	88.48		93.23
Flower’s methanol extract	93.92		98.04
Flower’s ionic liquid extract	89.77		96.36
	−4.43	NT	0.03	NT	NT
BHA	76.00		99.94
BHT	73.06		99.42
PG	95.61		95.80

Note. NT means not available because of low activity; BHA, BHT, and PG are positive controls.