practical: testing foods Flashcards
1
Q
how do you prepare a solid good sample to test for nutrients
A
grind up using pestle and mortar and then add water to form a solution
2
Q
what reagent is used to test for protiens
A
biruet
3
Q
what colour indicated a positive result for protien
A
purple
4
Q
how do you test for protien
A
add biruet and loom for colour change
5
Q
what reagent is used to test for starch
A
iodine
6
Q
what colour change indicates positive result for starch
A
blue/black
7
Q
how do you test for starch
A
add iodine and look for colour change
8
Q
what reagent is used to test for glucose
A
benedicts
9
Q
what colour change indicates a positive result for glucose
A
red/green/orange/yellow
10
Q
what are examples of carbohydrates
A
starch and glucose
11
Q
which reagents would you use to test for carbohydrates
A
amylase for starch benedicts for glucose
