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 |