Table 4 Inhibitory effects of the 80% methanolic extract of Mongolian I. bungei and its n-hexane-, EtOAc-, n-BuOH-, and H₂O-soluble portions against α-glucosidases

Samples	Inhibition (%)					IC50 (μg/mL)
	50	25	12.5	6.3	3.1
	80% MeOH ext.	90.9±1.7d1)	55.8±1.4d	22.0±1.1d	11.0±1.2d		4.9±0.3d	21.7±1.3
n-Hexane layer	97.0±1.0b	82.8±2.4c	38.9±2.1c	13.6±2.1c	6.9±0.5c	14.3±0.6
EtOAc layer	99.4±2.1a	96.6±1.4a	85.3±4.2a	64.5±1.5a	32.0±1.2a	4.6±0.1
n-BuOH layer	11.4±1.5f	9.4±0.9e	8.5±1.4e	6.7±0.5e	3.5±1.5e	>200
H2O layer	92.4±2.5c	85.9±1.2b	74.8±2.0b	44.4±0.6b	27.0±2.1b	6.7±0.4
Acarbose2)	14.1±0.9e	9.3±1.9e	2.6±0.5f	2.1±0.4f	1.1±0.4f	473.2±5.5

Scavenging activities are expressed as the mean±SD of triplicate experiments. Mean separation within columns of respective seasons by Duncan’s multiple range test at p=0.05.
Acarbose was used as a positive control.