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. 2023 Jan 19;9(1):e12855. doi: 10.1016/j.heliyon.2023.e12855

Table 1.

Preliminary phytochemical screening of the ethyl acetate extract of Senna tora (L.) Roxb. leaves.

Test name Observation Result Name of phytochemicals
Alkaline reagent Colorless solution + Phenolic (Flavonoids)
Ferric chloride Reddish-black coloration + Phenolic (Tannins)
Lead acetate Creamy-white color precipitation + Phenolic (Tannins)
Salkowski's Bluish-brown layer at upper interface + Terpenoids
Salkowski's Black color in the bottom face + Steroids
Mayer's Creamy-colored precipitation + Alkaloids
Legal's Blood-red color + Cardiac glycosides
Foaming Foam formation + Saponins
Fehling's Brick-red precipitation + Reducing sugar

“+” means presence of specific phytochemicals.