Antioxidant Activities and Phytochemical Study of Leaf Extracts from 18 Indigenous Tree Species in Taiwan

Table 3

Mobile phase, yields, and DPPH radical scavenging activity of EtOAc soluble fraction from the A. oliverianum leaves.

Subfractions	Mobile phase^a (v/v)	Yields (wt%)	DPPH radical inhibition (100 μg/mL)	DPPH radical inhibition (10 μg/mL)
EA1	5/95 (E/H)	0.9	8.2	<10
EA2	10/90 (E/H)	0.2	27.7	<10
EA3	20/80 (E/H)	0.5	27.6	<10
EA4	30/70 (E/H)	1.0	90.7	50.8
EA5	50/50 (E/H)	4.7	90.3	90.7
EA6	70/30 (E/H)	23.9	90.3	89.7
EA7	100/0 (E/H)	31.6	90.0	89.7
EA8	10/90 (M/E)	29.3	90.0	73.9
EA9	30/70 (M/E)	7.6	89.7	80.4

^aE: Ethyl acetate; H: n-Hexane; M: Methanol.