food tests ppt
TRANSCRIPT
By the end of this lesson, you should be able to:◦ Describe the food groups that foods are made
from ◦ Explain how to test for food groups
Starter:◦ What is food made from?
All foods are made from many different food types
This includes:◦ Carbohydrates◦ Protein◦ Fat◦ Vitamins and minerals◦ Water◦ Fibre
We are able to test for many different food groups within the science lab
Testing for Starch◦ Add a few drops of iodine and record any colour change
Testing for Glucose◦ Add 10ml of Benedict’s solution, heat up by placing into a
beaker of hot water and record any colour change
Testing for Protein (Biuret test)◦ Add a few drops of Biuret solution◦ Record any colour change
Testing for Fats◦ Add ethanol and shake ◦ Record any colour change
You should now be able to:◦ Describe the food groups that foods are made
from ◦ Explain how to test for food groups