Table 5. Inhibitory properties of fraction extracts from P. persica twigs and its solvent-soluble portions against α-amylase

Samples	Inhibition activity (%)					IC50 values (μg/mL)
	500 μg/mL	250 μg/mL	125 μg/mL	62.5 μg/mL	31.3 μg/mL
Hot water	78.7±0.162)d3)	62.3±0.15d	43.6±0.12d	26.5±0.13d	9.4±0.15e	163.9±7.4b
n-Hexane layer	-4)	-	-	-	-	>500
EtOAc layer	90.2±0.12b	81.9±0.12b	59.6±0.15b	50.3±0.16b	31.2±0.16b	69.6±6.1d
n-BuOH layer	84.8±0.15c	74.3±0.16c	59.2±0.16c	41.5±0.12c	26.9±0.13c	88.8±0.9c
H2O layer	71.0±0.13e	55.9±0.17e	37.0±0.13e	18.9±0.14e	14.5±0.12d	213.3±11.3a
Acarbose1)	99.9±0.18a	95.8±0.16a	92.4±0.13a	62.0±0.12a	32.6±0.14a	46.7±2.1e

Acarbose was used as a positive control substance.
Mean±SD (n=3).
^a-eValues with different superscript letters in the column are significantly different (p<0.05).
-, not tested.