Ethanol Emulsion Test
The ethanol emulsion test is the standard way to identify lipids (fats) in food without using complex equipment.
Why must you be careful with the ethanol?
What is Ethanol Emulsion Test?
"The emulsion test is a method used to determine the presence of lipids using ethanol and water."
What colour change shows starch is present when iodine solution is added?
Which result would show protein is present?
A food sample gives a brick-red precipitate with Benedict’s solution after heating. What does this show?
Which observation is a positive result for the emulsion test for lipids?
Testing for Lipids
Mix the food sample with ethanol and shake.
Pour the liquid into a test tube of water.
A cloudy white emulsion indicates the presence of lipids.
Ethanol is highly flammable; never perform this test near a Bunsen burner.
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