food tests Flashcards
if ur reading this ur actually a fatty bro (4 cards)
1
Q
What is the test for starch?
A
Add yellow-brown iodine solution to the food sample; it will turn blue-black in the presence of starch.
2
Q
What is the procedure to test for glucose?
A
Heat Benedict’s solution gently after adding glucose; it will turn from blue to brick-red in the presence of glucose.
3
Q
How do you test for proteins?
A
Add the protein sample to Biuret’s solution; it will turn from blue to purple in the presence of proteins.
4
Q
What is the method for testing lipids?
A
After adding the sample of lipid to the test tube, add ethanol and gently shake it. Add cold water to it; a white cloudy layer will form.
