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. 2015 Mar 29;2015:683726. doi: 10.1155/2015/683726

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