Food Tests (2.9) Flashcards
1
Q
Test for Fat
A
Ethanol and water in equal volume added to food sample and shaken
2
Q
Test for protein
A
Biuret solution added to a sample of food (mixed with 2cm3 water if not already liquid)
3
Q
Test for sugar (glucose)
A
Benedict’s solution and 80*C water bath to a sample of food (in solution)
4
Q
Test for starch
A
Iodine solution to a sample in a spotting tile
5
Q
Fat and Ethanol colour change
A
Clear to milky white (cloudy)
6
Q
Protein and Biuret colour change
A
Pale blue to mauve/purple
7
Q
Sugar and Benedicts solution (+water bath) colour change
A
Blue to Red/Yellow/Green depending on concentration of Sugar
8
Q
Starch and Iodine solution colour change
A
Orange to black/dark blue
