Carbohydrates
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the most abundant biomolecules on earth
polyhydroxylated carbon
carbohydrates has three elements, name each
Carbon Hydrogen Oxygen
ratio of hydrogen: oxygen
2:1
Structure of Carbonyl group
C=O
Structure of Hydroxyl group
-OH
Number of Carbon Atoms: Tetrose
4 carbons
Number of Carbon Atoms: Pentose
5 carbons
Number of Carbon Atoms: Triose
3 Carbons
Number of Carbon Atoms: Hexose
6 carbons
most significant in monosaccharides
glucose
Location of the Carbonyl Group: Co is located at the internal carbon
Ketose (Ketone)
Location of the Carbonyl Group: CO is located at the end of the carbon chains
Aldose (Aldehyde)
Type of Stereoisomerism: polygonal in shape, refers to the position of the -OH in the anomeric C1
Haworth Projection
mirror image, some chemical formula different configuration
Stereoisomerism
Type of Stereoisomerism: Refers to the position of the hydroxyl group AWAY from the aldehyde functional group
Fischer Projection
has glucose, galactose, fructose simple sugars cannot be hydrolyzed to a simpler form
Monosaccharides
All monosaccharides formed together or at least two
Disaccharides
Chaining of 3-10 sugar units
Oligosaccharides
Type of Disaccharides: Glucose + Fructose , Common table sugar
SUCROSE
Type of Disaccharides: Glucose + Glucose
Maltose
Type of Disaccharides: Glucose + Galactose, Milk Sugar
LACTOSE
Type of Polysaccharides: Primary CHO in the diet and is found in most plants (glucose molecules)
STARCH
Type of Polysaccharides: The storage form of CHO, Formed from glucose by the liver and muscle
GLYCOGEN
Type of Polysaccharides: Another polysaccharide in plants, Not digested by humans, it does not provide bulk for proper intestinal functioning (25-2500 glucose units)
CELLULOSE