Antioxidant Activity and Inhibitory Effects of Black Rice Leaf on the Proliferation of Human Carcinoma Cells

Table 2

Antioxidant activities of various subfractions derived from black rice leaf.

Subfraction	IC50 (μg/mL)
	DPPH^•	ABTS^•+	Reducing power
Subfraction 1 (Sub1)	^a	^a	^a
Subfraction 2 (Sub2)	^b	^b	^c
Subfraction 3 (Sub3)	^c	^c	^d
Subfraction 4 (Sub4)	^b	^b	^b
Subfraction 5 (Sub5)	^d	^e	^e
BHA	^d	—	—
Trolox	—	^d	—
Ascorbic acid	—	—	^e

The values of IC₅₀ are displayed as mean ± SD (n =3). The letters ^a-e in the same row represent significant differences (p <0.05).