CHEM 108 Lecture Notes - Lecture 12: Glycosidic Bond, Reducing Sugar, Amylose

72 views4 pages

Document Summary

2 sugars linked by glycosidic bond- disaccharide>2 sugars linked by glycosidic bond- oligosaccharide large numbers of sugars linked by glycosidic bond- polysaccharide. When hydrolyzed the glucose undergoes fermentation to produce ethanol alpha-1, 4-glycosidic bond. Some people can"t properly digest lactose, due to lack in enzyme. 15. 6 polysaccharides-polymer of many monosaccharideswe will look at amylose, amylopectin, cellulose and glycogen: they all contain d-glucose, but differ in: 1. A component of starch (plants) branched chain polymer (~every 25 glucose units) Is it a reducing sugar? yes at very end of chain it can reduce. If there are branches to amylose, we get amylopectin or glycogen. amylopectin energy storage in plants branches every 20-25 glucose residues glycogen-more compact energy storage in animals found in liver and muscle branches every 5- Do not form coils, but parallel rows, hydrogen bonded. Insoluble in water and more resistant to hydrolysis.