Table 2
Inhibition activity of extracts from Aster scaber on angiotensin conver ting enzyme

Phenolic concent (μg/mL)	Sample
	Water extracts		Ethanol extracts		Captopril
	Hippuric acid (μg/mL)	Inhibition activity (%)	Hippuric acid (μg/mL)	Inhibition activity (%)	Hippuric acid (μg/mL)	Inhibition activity (%)
Control	204.70±1.05¹⁾	-	213.70±0.87	-	221.70±0.98	-
50	153.67±1.53	27.98±0.72^a	83.67±4.62	60.79±2.16^a	105.00±1.00	50.79±0.47^a
100	131.33±4.16	38.45±1.95^b	81.00±4.00	62.04±1.87^a	98.00±7.00	54.07±3.28^a
150	120.67±5.03	43.45±2.36^c	69.00±2.00	67.66±0.94^b	77.00±2.65	63.91±1.24^b
200	105.00±5.29	50.79±2.48^d	67.67±0.58	69.38±0.27^c	53.00±1.00	75.16±0.47^c

Mean±SD (n=6), means with different superscript letters within column are significantly different at p<0.05 by Duncan's multiple range tests. Captopril was used for control.