Identification of unknown carbohydrate solution

Identification of unknown carbohydrate solution

1. Identification of unknown carbohydrate Gandham . Rajeev

2. Unknown carbohydrate solution Molisch’s test – reddish violet ring Iodine test Deep blue color Polysaccharide ( starch ) Confirmatory tests -Benedict’s test (No red ppt ) -Benedict’s test after hydrolysis (Red ppt ) No deep blue color May be mono or disaccharide Benedict’s test Red ppt (Reducing mono or disaccharide) No red ppt. (Non-reducing) sucrose Confirmatory tests - Benedict’s test after hydrolysis - Seliwanoff’s test Barfoed’s test Red scum (Reducing monosaccharide ) No red scum Reducing disaccharide Seliwanoff’s test Cherry red color (fructose) No cherry red color (glucose) Osazone test Osazone test

3. Thank you