Food Tests Flashcards
Describe how to do the test for starch and what is it called?
It’s called the iodine test
-Add some drops of iodine to starch
-Stir and record colour change
Yellow to blue-black
Describe how to do the test for protein and what is it called?
It’s called biuret test
-Add biuret solution
-Shake gently
Blue to purple
Describe the test for reducing sugar (glucose) and what is it called?
The Benedict’s test
-Add Benedict’s solution
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Describe test for non reducing sugar (sucrose) and what is it called?
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Describe test for lipids
Emulsion test
-Add ethanol (dissolves lipids)
-Add equal volume of water
-Shake thoroughly
-Record colour changes
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