Food Test

Question 1

What do you use to test for starch

Answer 1

Test with iodine (orangey brownie colour)

If starch is present it will turn blue black colour

Question 2

What do you use to test for sugars and how do u test for it

Answer 2

Use benedicts solution

• add that into a boiling tube
• put tube into water bath
• heat it up

If sugar is present the colour should become redish

Question 3

How and what do you use to test for fats

Answer 3

• Add some ethanol+water(colourless)
• shake the solution and mix it
• if fats are present solution should turn cloudy

Question 4

How and what do you use to test for proteins

Answer 4

• you use biurets reagent (light blue)
• add to food substance
• If protein is present it should turn into a pinky purpley colour