Skip to main content

Table 5 Groups of phytochemicals identified in MECN

From: The leaves of Crataeva nurvala Buch-Ham. modulate locomotor and anxiety behaviors possibly through GABAergic system

Phytochemicals Names of the tests Expected changes Results
Alkaloids Mayer’s test Yellowish buff color precipitate +
Hager’s test Yellow crystalline precipitate
Wagner’s test Brown or deep brown precipitate +
Dragendorff’s test Orange or orange-brown precipitate +
Tannic acid test Buff color precipitate +
Tannins Ferric chloride test Blue green color +
Alkaline reagent test Yellow to red precipitate +
Glycosides General test Yellow color +
Test for glucoside Production of brick-red precipitation +
Carbohydrates Molisch’s test A red or reddish violet ring is formed at the junction of two layers, and on shaking a dark purple solution is formed +
Barfoed’s test (general test for monosaccharides) Red precipitate +
Fehling’s test A red or brick-red precipitate +
Test for reducing sugar A brick-red precipitate +
Flavonoids Hydrochloric acid reduction test Red color +