Food Testing and energy Flashcards
1
Q
Q = m x c x delta t
A
Amount of heat lost/gained =. mass(g) x specific heat x change in temperature
2
Q
How to test for Protein?
A
the Biuret Test
3
Q
How to test for Lipids
A
The Emoulsion Test
4
Q
How to test for Sugars/Starch
A
the Benedicts Test
5
Q
What is the Biuret test
A
add copper sulphate to an alkaline solution
if it turns purple, there is protein
if it turns blue, there is nothing
6
Q
What is the emoulsion test
A
Shake a test substance with ethanol until it dissolves and then pour it into water
if there are lipids present they will precipitate out of the liquid with a milky emulsion
7
Q
what is the benedicts test?
A
iodine test where you add iodine to a solution
if it turns brown/orange to dark blue/black there are sugars present
If not then it doesn’t change colour
