Table 1.
Secondary metabolite constituents of Musa paradisiaca sap.
| Secondary metabolites | Observation | Inference |
|---|---|---|
| Alkaloids | Cream colour with Mayer's reagent; Reddish-brown precipitate with Wagner's and Dragendorff's reagents | Present |
| Tannins | White precipitate with ethanolic KOH | Present |
| Saponins | Stable, persistent froth with water | Present |
| Flavonoids | Dark yellow colour with KOH | Present |
| Phenolics | Greenish precipitate with FeCl3 | Present |
| Steroids | Red colour with drops of concentrated H2SO4 | Present |
| Triterpenes | Absence of bluish-green colour | Not detected |
| Cardiac glycosides | Absence of reddish-brown colour at the interface | Not detected |
| Anthraquinones | Absence of pink in the ammoniacal phase | Not detected |
| Cardenolides and dienolides | Absence of brown ring at the interfere | Not detected |