Food Test

Question 1

Solution to find sugar

Answer 1

Blue Benedict’s solution turns brick red on heating
Add enough to cover food
Place in a ‘water bath’ for 10 mins

Question 2

Solution to find lipids

Answer 2

Ethanol gives a cloudy white layer
Add a few drops
Shake in test tube for a min

Question 3

Solution to find protein

Answer 3

Biuret reagents turns purple

1cm^3

Question 4

Solution to find starch

Answer 4

Yellow-red iodine solution turns blue-black
Few drops
Only one to use spotting tile