Testing for lipids

Testing for lipids

1. They form a translucent mark on paper that does not disappear when the paper is dried on a flame.
2. Emulsion test

When 2cm³ of fats or oil are dissolved in 2cm³ of absolute ethanol followed by water, a white cloudy suspension is formed.

1. Sudan III

When a few drops of Sudan III are added to a mixture of 2cm3 of water and 2 cm3 of oil and shaken, a red stained oil layer separates out.

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