Food tests (practical) Flashcards
1
Q
What does Benedict’s solution test for
A
- Reducing sugars
2
Q
What does iodine solution test for
A
- Starch
3
Q
What does Biuret’s solution test for
A
- Proteins
4
Q
What does Sudan III solution test for
A
- Lipids
5
Q
What is the outcome of a positive Benedict’s test
A
- Colour change from blue to green, yellow or brick - red
- Depending on the concentration of present sugars
6
Q
What is the outcome of a positive Iodine test
A
- Colour change from brown-orange to blue or blue-black
7
Q
What is the outcome of a positive Biuret’s test
A
- Colour change from blue to purple
8
Q
What is the outcome of a positive Sudan III test
A
- Layer of red solid appears on top
