foodtests Flashcards
food tests
1
Q
iodine starch test(positive)
A
blue black
2
Q
Reducing sugar test(positive)
A
green-brickred
3
Q
Protein/amino acids(reageant)
A
Biuret (a mixture of sodium hydroxide and copper sulfate).
4
Q
Protein/amino acids(positve)
A
Lilac/purple
5
Q
Protein/amino acids(negative)
A
blue(no change)
6
Q
Reducing sugar test(negative)
A
no colour change
7
Q
Reducing sugar test(reageant)
A
Benedict’s
8
Q
iodine starch test(negative)
A
orange-brown(no colour change)
9
Q
iodine starch test(reageant)
A
Iodine
10
Q
Fat(positive)
A
Cloudy White emulsion
11
Q
Fat(negative)
A
clear(colourless)
12
Q
Fat(reageant)
A
Ethanol
13
Q
A
