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Table 1 Chemical compounds sought in the hydroalcoholic extract of H. bonariensis

From: Toxicological evaluation of Hydrocotyle bonariensis Comm. ex Lamm (Araliaceae) leaves extract

Secondary metabolites

Reagents

Observation (positive result)

Flavonoids

Ferric chloride 1

Orange pink

1/10 NaOH

Red

Tannins

Ferric chloride 1

Blue-black coloration

Copper sulfate

Alkaloids

Mayer

Yellowish white precipitate

Dragendorf

Red–orange precipitate

Saponosides

Foam index test

Important presence of foam of at least 1 cm