FoodTests

Question 1

Test for sugars

Answer 1

Benedict’s Solution added, heated in a water bath. Goes green > orange/red, depending on how much glucose.

Question 2

Test for Starch.
What hazards are involved?

Answer 2

iodine solution goes blue-black
Iodine solution is an irritant (use gloves and goggles)

Question 3

Test for proteins

Answer 3

1. Add 1cm^3 of biuret solution A to the food solution in a test tube.
2. mix the liquids
3. Add 1cm^3 of biuret solution B
4. shake
5. if protein is present, the colour will be purple
   * wear goggles

Question 4

Test for Fats

Answer 4

1. Add equal amouts of food and water to test choob
2. Add Sudan III
3. Shake
4. See red-stained layer on surface of water
5. profit.