Food Tests Flashcards
1
Q
What reagent is used to test for starch in food?
A
Iodine Solution
2
Q
What colour change shows starch is present with iodine solution?
A
Yellow-brown to blue-black
3
Q
What reagent is used to test for glucose (reducing sugar)?
A
Benedict’s solution (requires heating)
4
Q
What colour change shows glucose is present in Benedict’s test?
A
Blue to green/yellow/orange/red (depending on amount of glucose)
5
Q
What reagent is used to test for protein?
A
Biuret Solution
6
Q
What colour change shows protein is present in Biuret test?
A
Blue to purple/lilac
7
Q
What test is used to detect lipids (fats and oils)?
A
Emulsion test (using ethanol)
8
Q
What result shows lipids are present in the emulsion test?
A
Cloudy white emulsion appears
