Antioxidant and Anti-Inflammatory Activities of Phytochemicals from Ruellia tuberosa

Table 1

The antioxidant activity, total polyphenols (TPs), and total flavonoids (TFs) content of crude ethanol extract and its derived fractions.

Sample	IC50 (μg/mL)		Content (mg/100 g dry sample)
	DPPH	ABTS^•+	Polyphenols	Flavonoids
Crude ethanol extract	20.65 ± 3.12	13.93 ± 2.18	308.21 ± 4.72^c	97.8 ± 10.25^a
n-Hexane fraction	96.82 ± 5.65	71.82 ± 5.39	21.45 ± 2.05^a	15.75 ± 1.91^c
Ethyl acetate fraction	12.69 ± 2.35	14.70 ± 2.25	259.12 ± 1.42^b	56.07 ± 2.23^b
Methanol fraction	62.93 ± 4.17	49.34 ± 3.62	158.41 ± 9.47^d	71.82 ± 3.76^c
Vitamin C (positive control)	3.66 ± 0.28	—
Trolox (positive control)	—	2.90 ± 0.03

Values represent the mean of three replicates (n = 3) ± SD. Mean values followed by the different superscripts (a–d) in a column are significantly different ( < 0.05). < 0.05 vs. positive control.