Food tests Flashcards
What is the food test for Starch
The iodine test
What is the food test for lipids and fats?
The emulsion test.
What is the food test for proteins?
Biuret test.
What is the food test for reducing sugars?
The test for reducing sugars I the Benedict’s reagent test.
What is the food test for non reducing sugars and how is this carried out?
To begin with, carry out the Benedict’s reagent test and acquire a negative result. Then, boil with a dilute acid and add neutralise with sodium hydrogen carbonate. Then add the Benedict’s reagent and heat again and then a colour change will happen from blue to a red precipitate forming.
How is the Benedict’s reagent test carried out?
Add Benedict’s reagent and heat. A colour change should happen from blue to a red precipitate.
How do you carry out the iodine test?
Add iodine and shake. A colour change should happen from orange/brown to blue/black.
How do you carry out the biuret test?
Add biuret solution to the food sample and shake, the solution should turn from blue to purple.
