Disaccharides – two sugar units bonded together
Disaccharides video clip
Disaccharides are formed in condensation reactions
Maltose (two glucose units) provides energy for germinating seeds.
H2O
Maltose – between which carbon #’s are the glucoses connected?
H2O
Sucrose (glucose + fructose) is a transport form of sugar used by plants and harvested by humans for food.
Lactose (galactose and glucose) is present in milk
BILL
•Draw 2 glucoses next to each other. Try to do this without looking at notes.
• On your first glucose, highlight the hydroxyl (-OH) on carbon 1.
• On your second glucose, highlight the hydroxyl (-OH) on carbon 4.
BILL
Draw maltose formed when you connect the two glucoses in a condensation reaction.
BILL
Using the molecular model kits:
BUILD MALTOSE
Notice orientation of hydroxyl (-OH) groups. STAMP WHEN COMPLETE