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2Professor &Head, Department of Environmental and Herbal Sciences, Tamil University, Thanjavur – 613 005, Tamil Nadu, India
The medicinal plant Solanum nigrum L., popularly known as black nightshade belongs to the family Solanaceae was selected for preliminary phytochemical screening of secondary metabolites. Phytochemical constituents like alkaloids, flavonoids, carbohydrates and phytosterols were analyzed. The alkaloids in black fruited and orange fruited variants of Solanum nigrum was found to 48.61 ± 0.83 mg/g 35.65 ± 0.95 mg/g respectively. The present study suggest that Solanum nigrum variants might be a source of large amount of alkaloids. The results tend to confirm the popular use of the plant.