Solanum elaeagnifolium (yellow nightshade) is a herbaceous plant that belongs to the Solanaceae family, which are herbaceous plants, trees, shrubs or lianas widely distributed in tropical regions. The objective of this work is to highlight the existence of secondary metabolites that characterize Solanum elaeagnifolium. To achieve these objectives, a qualitative study based on phytochemical screening was carried out on the different parts (leaves, fruits, stems and roots) to highlight the existence of secondary metabolites. The results of this study showed that the leaves are rich in flavonoids, tannins, coumarins, reducing sugars and irridoids, the fruits are rich in Flavonoids, Tannins, coumarins and reducing Sugars, the Stems are rich in coumarins, reducing sugars and the roots are rich in flavonoids, reducing and irridoid sugars. The dosage allowed us to deduce that the phenolic composition varies according to the part studied. Indeed the fruits showed the highest contents of total polyphenols (5.129 ± 0.40 mg/g dry matter) Concerning the total flavonoids, the highest contents were determined in the leaves (0.618 ± 0.01 mg/g dry matter) followed by the fruits (0.460±0.01 mg/g dry matter). Similarly, the fruits (1.380±0.97 mg/g dry matter) were the richest in tannins followed by the stems (0.506±0.73 mg/g dry matter); leaves (0.431±1.57 mg/g dry matter); and roots (0.251±1.37 mg/g dry matter).

Keywords: Solanum elaeagnifolium, physicochemical; screening; dosage.