Experimental Assessment of Ethanolic Extract of Leaves as an -Amylase and -Lipase Inhibitor.

METHODS

Phytochemical screening, antioxidant activity, -amylase, and -lipase inhibitory assessment were carried out on extract.

RESULTS

The result of the phytochemical screening revealed the presence of total phenolic, flavonoid, tannin, and alkaloid contents of values 0.070 ± 0.005 mg gallic acid equivalent/g, 0.180 ± 0.020 mg rutin equivalent/g, 0.042 ± 0.001 mg tannic equivalent/g, and 12.17 ± 0.001%, respectively, while the total protein analysis was 0.475 ± 0.001 mg bovine serum albumin equivalent/g. Ferric reducing antioxidant power (FRAP) and total antioxidant capacity (TAC) values were 0.534 ± 0.001 mg gallic acid equivalent/g and 0.022 ± 0.00008 mg rutin equivalent/g, respectively. Diphenyl-2-picrylhydrazyl (DPPH), ABTS (2,2'-azino-bis (ethylbenzothiazoline-6-sulfonic acid)), and nitric oxide (NO) assays showed the extract to have a strong free radical scavenging activity. The 50% inhibitory concentration (IC) values of the lipase and amylase activities of the extract are 1.0877 mg/mL and 0.1802 mg/mL, respectively.

CONCLUSION

However, -lipase and -amylase inhibiting activity of could be related to the phytochemicals in the extract. This research validates the ethnobotanical use of leaves as an effective plant-based therapeutic agent for diabetes and obesity.