Investigation of Plantago ovata Husk as Pharmaceutical Excipient for Solid Dosage Form (Orodispersible Tablets)

Table 3

Phytochemical constituents of PO husk.

Test for presence of	Observations	Result
Alkaloids	Colored precipitate present with these reagents	Alkaloids present
Tannins	Dark green solution/blue-black precipitate	Tannins present
Saponins	Persistent froth	Saponins present
Flavonoids	Yellow solution that turns to colorless	Flavonoids present
Glycosides	Reddish brown layer formed at interface	Glycosides present
Phenols	Formation of green precipitates indicate phenols	Phenols present