Table 2.
Test for phytochemicals | Amount of plant extract | Chemicals used | End point for confirmation of phytochemical |
---|---|---|---|
Carbohydrate | 2 mL | Few drops of concentrated sulfuric acid and 1 mL of Molisch’s reagent | Reddish or purple color |
Tannins | 2 mL | 4 mL of 5% ferric chloride | Greenish black or dark blue color |
Saponins | 2 mL | 2 mL of distilled water and shake for 15 min | Layer of foam on surface |
Flavonoids | 2 mL | 1 mL of 2 N sodium hydroxide | Yellow color |
Alkaloids | 2 mL | Few drops of Mayer’s reagent and 2 mL of concentrated HCl | White precipitate or green color |
Anthraquinone | 1 mL | Few drops of 10% ammonia solution | Pink color precipitates |
Anthocyanosides | 1 mL of filtrate | 5 mL HCl | Pale pink color |