ACCT 120 Lecture Notes - Lecture 1: Glucose, Central Board Of Secondary Education, Mannose
Document Summary
Polyhydroxy aldehydes or polyhydroxy ketones or compounds on hydrolysis give carbohydrates: classification of carbohydrates: Monosaccharides: simplest carbohydrates, it cannot be hydrolysed into simpler compounds, examples - glucose, mannose. Oligosaccharides: carbohydrates which gives 2 to 10 monosaccharide units on hydrolysis, examples - sucrose, lactose, maltose. Polysaccharides: carbohydrates which on hydrolysis give large number of monosaccharide units, examples - cellulose, starch, anomers: Pair of optical isomers which differ in configuration only around c1 atom are called anomers. Pair of optical isomers which differ in configurationaround any other c atom other than c1 atom are called epimers. D-glucose and d- mannose are c2 epimers: preparation of glucose (also called dextrose, grape sugar), from sucrose. 12 cos e: structure elucidation of glucose: Gluconic: d glucose with (ch3co)2o and zncl2. 3 shows the presence of 5 -oh groups: d glucose with bromine water. Cooh choh: glucose with phenyl hydrazine to form osazone.
