Two medicinal plants,Gardeniaerubescens and Fadogiaagrestis were selectedto evaluate their biological
activities. Their total phenolic and flavonoid contentswere assessed using folin-ciocalteu and aluminum
chloride regents’ methods. The antioxidant activity was estimated using DPPH
(1,1-diphényl-2-picrylhydrazyl),ABTS (2,2’-azinobis-[3-ethylenzothiazoline-6-sulfonic
acid]) and FRAP (ferric reducing antioxidant
power). The antiplasmodial activity of the extracts was
determined invivo on 42 NMRI mice. The results indicate that all the extracts
from both two plants contain some polyphenols. The ethanolic extract of the
leaves of Gardeniaerubescens showed the best antioxidant
activity by the method of DPPH. The aqueous extracts of the leaves of Gardeniaerubescens and the whole plant of Fadogiaagrestis have a
reducing power similar to control (quercetin). All the extracts have a low
capacity to scavenge the ABTS radical cation compared to the controls (trolox
and quercetin). Concerning the antiplasmodial activity, all the extracts
presented moderate antiplamodial activities. This result could justify the
traditional uses of Gardeniaerubescens and
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