Xanthine oxidase inhibitory activity of some Panamanian plants from Celastraceae and Lamiaceae
1995
Gonzalez, A.G. | Bazzocchi, I.L. | Moujir, L. | Ravelo, A.G. | Correa, M.D. | Gupta, M.P.
Thirty four crude extracts of Panamanian plants, from nine species of Celastraceae and Lamiaceae, were assayed for xanthine oxidase (XO) inhibitory activity. The enzymatic activity was estimated by measuring the increase in absorbance at 290 nm due to uric acid formation. Eighty five percent of the crude extracts were found to possess XO inhibitory activity at 50 microgram/milliliter and all the extracts of the species from Lamiaceae were active even at 1 mirogram/milliliter. The ethanol extracts of Hyptis obtusiflora Presl ex Benth. (Lamiaceae) and H. lantanaefolia Poit. (Lamiaceae) exhibited the highest activity with an inhibition of approximately 40% at 1 microgram/milliliter.
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