The Presence of Lactose in Milk (Leaving Cert Agricultural Science): Flashcards

Reducing sugar

4-5%

Reducing sugars

Blue to brick-red

80-100°C

5 minutes

Has free anomeric carbon

Shows no reducing sugars present, proves specificity

Colour changes from blue to brick-red/orange

$Cu^{2+}$ (blue) reduced to $Cu_2O$ (brick-red)