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. 2015 Feb 18;6:51–55. doi: 10.1016/j.btre.2015.02.001

Table 1.

Phytochemical analysis of various extracts of Curcuma longa (rhizome).

S. no. Secondary metabolites Name of test Various extracts of Curcuma longa
Petroleum ether Benzene Chloroform Methanol Water
1 Alkaloid Mayer’s test + +
Hager’s test
2 Tannins and phenolic compounds Ferric chloride test + + + + +
Vanillin hydrochloride test + + + + +
3 Protein Ninhydrin test
Biuret test
4 Flavonoids Shinoda test (magnesium hydrochloride reduction test) + + + + +
Alkaline reagent test + + + + +
5 Steroids and triterpenoids Salkowski test
Libermann–Buchard test
6 Glycosides Legal test + + + + +
Sodium nitroprusside test + + + + +
7 Carbohydrates Benedit’s test + + + + +
Fehling’s test + + + + +