They are compound of carbon, hydrogen and oxygen. Lipids are made up of fat and oil. A lipidis composed of a glycerol molecules and fatty acid joined through condensation
- They are insoluble in water
- They are dissolving in organic solvent such as acetones and ether
- When you shake a mixture of oil and water ,it separates into two district layers of water and oil after some time
Procedure
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Observation
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Conclusion
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Grease spot test
i. Rub he specimen on a piece of dry filter paper
ii. Hold the paper against the light
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A translucent mark is formed
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Lipids was present
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Sudan III solution
i.Add the small amount of specimen in a test tube
ii Add some drops of sudan III solution
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Droplets of oil turn red
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Lipids are present
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Emulsion test
i. Put the specimen in a test tube with an equal amount of acetone, benzene or ethyl alcohol
ii. Shake the mixture until the its clear
iii. Add an equal volume of water
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The clear solution turn cloudy, forming a milky suspension
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Lipids are present
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