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This paper aimed at studying the antioxidant efficacy of the methanolic leaf extract of Clerodendrum splendens, a plant of the Lamiaceae family. Phytochemical tests carried out on extracts of Clerodendrum splendens leaves have been able to detect the presence of secondary metabolites such as Flavonoids, Tannins, Saponins and Terpenoids. The results of the antioxidant activity have shown that CSF2, CSF3 fractions and CSB, CSG fractions similarly inhibited hepatic lipids but significantly less than vitamin C. Compared to all fractions, the CSB fraction shows the best inhibitor on the peroxidation of hepatic lipids because at 150 μg/mL, there is a maximum activity (2.5 μg/mL of protein). However, it is found that CSF3, CSF2 and CSG have higher IC50 values than vitamin C (5.613±0.117) while CSEB, CSB and CSC fractions showed lower IC50 values than vitamin C, which is used as the reference reducing compound. The lower the IC50 value compared to vitamin C, the greater the antioxidant capacity of the plant extract. The results of this study suggest that Clerodendrum splendens represents an untapped source of compounds with potential antioxidant activity that could be explored in the development of new therapeutic natural products.

Phytochemistry and Antioxidant Activities of the Methanolic Leaf Extract of Clerodendrum splendens (Lamiaceae)