Blueberry extract inhibits carbohydrate-hydrolyzing enzymes and these inhibitory activities are not proanthocyanidin dependent

Applied Biological Chemistry

Table 1 IC₅₀ values of blueberry extract and fractions against rat α-glucosidase, maltase, and sucrase (TP and PAC basis)

IC₅₀ (mg/mL)	Acetone (extract)	Low MW fraction	PAC fraction
Rat α-glucosidase IC ₅₀
T.P	0.390	0.242	0.915
PAC	0.090	N/A	0.299
Maltase IC ₅₀
T.P	0.124	0.070	>1.853
PAC	0.026	N/A	>0.303
Sucrase IC ₅₀
T.P	0.027	0.016	0.889
PAC	0.006	N/A	0.291