NUTR 3210 Lecture 5: Unit 5- Carbohydrates
29 Jun 2016
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We will describe them as poly hydroxy aldehydes and ketones, although the name carbohydrate is still used today: major source of fuel/energy in the body, represent 50% of the calories consumed in north american diet - Cho diet does not contain essential nutrients (however) Essential nutrients are not the same as essential metabolites. There are several of these chiral c in each sugar molecules making stereoisomers important to consider in understanding cho chemistry. These are spontaneous, non-enzymatic reactions and when a new chiral c is formed in this way, it may form different isomers (e. g. alpha vs beta d-glucose) Carbohydrate classi cation: simple sugars, monosaccharides: the simplest form of cho. Most common monosaccharides are 6-carbon chains or hexoses, where glucose is the most abundant. Others include pentoses (5c) critical for making dna and rna, and triodes (3c), which have critical roles in metabolism, like pyruvate: disaccharides: forms through glycosidic linking of 2 monosaccharides.
