Table 1.

α-Glucosidase inhibitory activity of compounds.

Samples	Sucrase Inhibition		Maltase Inhibition		α-Amylase Inhibition
	Inhibition	Ic50	Inhibition	IC50	Inhibition	IC50
	Ratio (%)	(μmol/L)	Ratio (%)	(μmol/L)	Ratio (%)	(μmol/L)
1-DNJ	100	0.078	100	0.113	0	>100
FA	84.6	13.53	65.7	25.97	0	>100
DAB	79.7	21.27	77.9	12.33	0	>100
Acarbose	100	1.046	98.0	0.104	93.6	2.69
SZ-A	100	0.03 μg/mL	100	0.06 μg/mL	0	>100 μg/mL

Note: The inhibitory rate of different compounds on sucrase, maltase and α-amylase was calculated at the concentrations of 4 × 10⁻⁵ M, 4 × 10⁻⁵ M and 1 × 10⁻⁵ M, respectively.