Table 1 Phytochemical screening tests for different extract fractions of E. alata fruits
Phytochemical active constituent | Hexane extract | Acetone extract | Methanol extract | Aqueous extract |
|---|---|---|---|---|
Protein & amino acids Biuret test | − | − | + | + |
Reducing sugars Fehling’s test | − | − | − | + |
Complex polysaccharides Molisch’s test | + | + | – | − |
Starch Iodine test | − | − | − | + |
Phenols Ferric chloride test | + | + | + | + |
Tannins Gelatin test | + | + | + | + |
Flavonoids Shinoda reagent | − | + | + | + |
Saponin Foam test | − | − | − | + |
Glycosides Keller-Killani Test | − | − | − | − |
Steroids | + | − | − | − |
Terpenoids Salkowski’s test | + | − | − | − |
Alkaloids Wagner’s test | + | + | + | + |
Volatile oil KOH test | − | − | + | − |