Food tests

Cards (12)

What does Benedict’s test for
Sugars
what does iodine test for
starch
what does biruet test for
proteins
what does Sudan III test for
lipids
What is the method for Benedict’s test
Add about 10 drops of Benedict’s solution to a 5cm cubed food sample and leave for 5 minutes at 75 degrees
what is the change in colour for a positive Benedict’s result
blue to green/orange/brick red
what is the method for iodine test
add a few drops of iodine solution to a 5cm cubed food sample and mix
what is the colour change for a positive iodine test
browny orange to blue/black
what is the method for a biruet test
add 2cm cubes of biruet solution to a 2cm cubed food sample and mix
what is the colour change for a biruet test
blue to purple
what is the method for the Sudan III test
add 3 drops of Sudan III stain solution to a 5cm cubed food sample and mix
what is the positive result for a Sudan III test
mixture seperstes into 2 layers , top layer is bright red