Top topic this week
Back to FAQs
Related FAQs
Frequently Asked Question
Questions asked by users might not always be phrased in the clearest way.
Explain the procedure for the Tests of the following;rn sapponins, Terpenoids, anthraquinones, Phenols, and steroids.
Accepted Answer
Sure, here is the procedure for the tests of saponins, terpenoids, anthraquinones, phenols, and steroids:
Saponins
Frothing Test:
1. To a small amount of the extract, add a few drops of water and shake vigorously.
2. The formation of persistent froth indicates the presence of saponins.
Terpenoids
Salkowski Test:
1. To a small amount of the extract, add a few drops of concentrated sulfuric acid and heat gently.
2. A reddish-brown color indicates the presence of terpenoids.
Anthraquinones
Borntrager's Test:
1. To a small amount of the extract, add a few drops of 10% sodium hydroxide solution.
2. A reddish-violet color indicates the presence of anthraquinones.
Phenols
Ferric Chloride Test:
1. To a small amount of the extract, add a few drops of 1% ferric chloride solution.
2. A green, blue, or violet color indicates the presence of phenols.
Steroids
Liebermann-Burchard Test:
1. To a small amount of the extract, add a few drops of acetic anhydride and a drop of concentrated sulfuric acid.
2. A green, blue, or violet color indicates the presence of steroids.
Articles you might like