Table 1.
Test | Observation | Inference |
---|---|---|
Alkaloids | ||
Hager test | Yellow ppt | Alkaloids present |
Mayer Test | Creamy ppt | Alkaloids present |
Wagner test | Reddish-brown ppt | Alkaloids present |
Glycosides | ||
Keller-Killani test | Brown ring (at junction) | Glycosides present |
Tannins | ||
Fe Cl3 test | Blackish color | Tannins present |
Flavonoids | ||
Test with alkali solution | Dark yellow color | Flavonoids present |
Saponins | ||
Froth test | Froth formation | Saponins present |
Phenolic contents | ||
Fe Cl3 test | Blackish color | Phenolic present |
Carbohydrates | ||
Fehling reagent | Brick-red color | Carbohydrates present |