food tests Flashcards
1
Q
test for SUGARS
A
BENEDICTS
if sugar is present, solution will turn:
blue —> green —> yellow —> brick red
depending on how much sugar
2
Q
test for STARCH
A
IODINE SOLUTION
if starch is present, solution will turn:
browny orange —> black/bluey black
3
Q
test for PROTEINS
A
BIURET
if protein is present, solution will turn:
blue —> purple
4
Q
test for LIPIDS
A
EMULSION TEST/ETHANOL
if lipids are present, solution will turn:
cloudy
5
Q
how to test for starch
A
add solution directly into substance
6
Q
how to test for sugar
A
ass solution to substance
heat for 2 mins
7
Q
how to test for protein
A
add solution to substance
8
Q
how to test for lipids
A
add solution
shake
add water
9
Q
how do you prepare food for a food test
A
crush in pestle and mortar
add distilled water to dissolve food
filter
put in test tube
