Figure 1
The inhibitory effects of the grape and apple pomace extracts on yeast α-glucosidase activity: A. Time responses of the pomace extracts on the enzyme activity; B. Comparison of the inhibitory activities by the different pomace extracts. Acarbose (150 μg/mL), is a commercially available oral alpha-glucosidase inhibitor which served as the positive control. The α-glucosidase activity was determined by measuring p-nitrophenol released from pNPG at 405 nm. The reaction was conducted at 37°C for 75 minutes. Results are expressed as mean ± standard deviation. * significant difference versus the control (P < 0.05).