TEST FOR ADULTERANTS

TEST FOR ADULTERANTS Aim To test for common adulterants present in food at home level S.No. Food item Adulterant Test . Sugar Chalk powder Dissolve in a glass of water. Chalk will settle down at bottom indicates adulterant present. . Chilli powder Saw dust and colour Sprinkle on the surface of water, saw dust floats. Added colour will make the water coloured. . Rawa Iron filling to add weight Pass magnet through the rawa. Iron fillings get attracted to magnet. . Milk water Pour few drops of milk on a polished surface. Pure milk leaves a white trail while flowing and the adulterated milk will flow without leaving a mark . Honey Sugar plus water A cotton wick dipped in honey is burnt. If adulterated with water cotton wick will not burn or burns with a cracking sound. . Tea dust Used tea leaves dried, powdered and artificially coloured Sprinkle the dust on the wet white filter paper. Spots of yellow, pink and red appearing on the paper indicates that the tea is artificially coloured. . Black pepper Papaya seeds Papaya seeds are shrunken and greenish brown in colour. It has repulsive flavor while black pepper has pungent and hot flavor. . Coconut oil Any other oil Keep the bottle of coconut oil in refrigerator. It solidifies while the adulterant does not. . Common salt Chalk powder Dissolve in water. The water turns white and indicates presence of chalk powder. . Coriander powder Powdered Horse dung Soak in water. Horse dung will float which can be easily detected. Nutrition - - Nutrition and Dietetics Pactical