Moores test

Moores testGROUP 03

General overviewIts a test for the presence of reducing sugar. When a solution of reducing sugar is heated with an alkali (NaOH), it turns yellow to orange and finally dark brown, liberating the odor of caramel. This is due to the liberation of aldehyde which subsequently polymerizes to form a resinous substance, caramel.PrincipleThis test is based on the principle that sugars boiled with concentrated sodium hydroxide undergo polymerization to form a resinous substance, caramel.ProcedurePlace 1 ml of different sugars in 6 test tubes Glucose; Sucrose; Fructose; Galactose; Maltose; Lactose.Add 1 ml of concentrated Na(OH).Boil and note the change of colour and odour produced.Observation

Inference All the sugars except sucrose gave positive for Moores Test. All sugars except sucrose turn golden brown and produce the odour of caramel.Sucrose, being a non reducing sugar does not have a free aldehyde or ketone group and therefore theres no liberation of aldehyde and does not undergo polymerization reactionThank you!!