Testing Foods Flashcards
What chemical is used to test for starch?
iodine
How do you test for starch?
- add chemical
2. look for colour change
What results will you get if there is starch?
Blue or black
What chemical is used to test for protein?
Biuret’s solution
How do you test for protein?
- add chemical
2. look for colour change
What results will you get if there is protein?
Purple
What chemical is sued to test for reducing sugars?
Benedict’s soloution
How do you test for reducing sugars?
- add chemical
- heat for 2 mins in water bath a boiling point
- look for colour change
What results will you get if there is reducing sugars?
Brick red - reducing sugars
Yellow / Green / Orange -less sugar
What chemical is used to test for lipids?
Ethanol
How do you test for lipids?
- add chemical
- shake thoroughly
- add water
- look for colour change
What results will you get if there is lipids?
Cloudy / milky
What process is used to measure the amount of energy in food?
Calorimeter
What equipment is used for calorimeter?
- thermometer
- calriometer
- stirrer
- water
- clamp
- Bunsen burner
