Molisch's test

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Noun1.Molisch's test - biochemical indicator of the presence of carbohydrates in a solution; if carbohydrates are present a violet ring is formed by reaction with alpha-naphthol in the presence of sulfuric acid
indicator - (chemistry) a substance that changes color to indicate the presence of some ion or substance; can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction
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References in periodicals archive ?
Carbohydrates were detected using Molisch's test, violet ring formation indicates the presence of reducing sugars (Evans, 1996).
longa [5,6] Chemical Method Result substance tested Alkaloid Mayer's test + Dragendorff's test + Hagers test + Wagner's test + Tannins present Ferric chloride test + Gelatin test + Lead acetate test + Flavonoids Ferric chloride test + Magnesium hydrochloride test + Sodium hydroxide test + Mineral acid test + Carbohydrates Molisch's test + Benedict's test + Fehling's test + Barfoed's test - Phytosterols Liebermann-burchard test + Proteins and amino Millions test - acids Biuret test - Ninhydrin test - Lactones Acetic anhydride test + Alkaline nitroprusside test + Triterpenes Salkowski test + Liebermann-storch mora sky + test Hirshhorn test + Anthraquinone Borntrager's test + glycosides C.
Phytochemical analyzed Test method Inference Carbohydrate Molisch's test - Fehling's test - Flavonoids Alkaline reagent test + Ferric chloride test ++ Tannins Ferric chloride test ++ Potassium dichromate test +++ Glycosides Keller-Kiliani's test + Saponins Foam test +++ Alkaloids Mayer's test + Dragendorff's test + Sterols and triterpenoids Salkowski test - Amino acids Ninhydrin test - (+++): appreciable amount; (++) moderate amount; (+) trace amount; (-) completely absent.
Molisch's Test for Carbohydrates: Two drops of Molisch's reagent were added to about 5 mg of the extract in 5-ml aqueous solution in a test tube.