Table 5. α-Glucosidase inhibition activities of P. chinense Purch seed extracts using different extraction solvent

Extraction solvent	Inhibition activity (%)					IC50 (μg/mL)	Acarbose1) IC50 (μg/mL)
	100 (μg/mL)	50 (μg/mL)	25 (μg/mL)	12.5 (μg/mL)	6.25 (μg/mL)
Water	5.26±0.8c2)	5.22±1.7b	4.21±0.2c	4.05±0.4b	0.96±2.1a	ND3)
75% ethanol	84.19±0.7a	60.46±4.1a	42.75±1.5a	18.53±3.4a	10.69±7.3a	46.47±2.3**4)	33.77±3.8
75% methanol	59.12±3.1b	46.80±5.7a	17.00±3.9b	8.24±2.6b	4.79±3.7a	70.97±2.3

Acarbose was used as a positive control.
Mean±SE (n=3) within each column followed by different letters are significantly different (p<0.05).
ND, not detected.
Mean±SE (n=3) within each column followed by ^**means p<0.01 by independent t-test.