reducing sugars Flashcards
1
Q
what are the two reducing sugars and a non reducing sugar
A
Maltose and lactose are reducing
Sucrose is non reducing
2
Q
what are the steps to the reducing sugar
A
place food in a test tube
add benedicts solution
heat in water bath at 80 degree for 3 min
3
Q
how long should you heat the test tube for
A
3 min
4
Q
what temperature should the water bath be
A
80 degree
5
Q
what is a positive result
A
green precipitate- low conc
Yellow precipitate- medium conc
orangey- red precipitate- high conc
6
Q
why is a precipiate formed
A
because copper sulfate is reduced to copper oxide which is insoluble in water
