In-vitro α-Glucosidase Inhibitory Activity of Litsea petiolata Hk. f

Alpha-glucosidase is an enzyme that plays a role in the process of hydrolysis of carbohydrates into glucose so that the enzyme inhibitor can inhibit the process of glucose absorption. One synthetic drug that has a mechanism of action to inhibit the activity of the alpha-glucosidase enzyme is acarbose, however in the long term has side effects, such as digestive system disorders. Therefore, the use of natural medicines as alternative therapies can be considered for use. This study aimed to determine the inhibitory activity of the enzyme alpha-glucosidase from extracts and fractions of Litsea petiolata Hk. f bark. The extraction method used maceration, and fractionation using column chromatography. The results showed that the IC50 values for extract, fraction B, fraction D, and acarbose were 444.17 μg/ml, 682.85 μg/ml, 1683.45 μg/ml, and 110.60 μg/ml, respectively. In conclusion, the activity extract as the alpha-glucosidase was higher than the fractions but lower than acarbose.