Carbohydrate II Transparencies

Carbohydrate II Transparencies - rajecCarbohydrates...

Info iconThis preview shows pages 1–16. Sign up to view the full content.

View Full Document Right Arrow Icon
rajecCarbohydrates Oligosaccharides and Poly- saccharides I.Oligosaccharides – Definitions A. Def. - From 2-10 monosacchrides connected together B. Disaccharides - Two monosaccharides connected together C. Trisaccharides - Three monosaccharides connected together D. Tetrasaccharides - Four monosaccharides connected together E. Pentasaccharides - Five monosaccharides connected together 230
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
F. Hexasaccharides - Six monosaccharides connected together II.Oligosaccharides- How To Connect Rings & Types of Glycosidic Linkages A. Beta (1 ---> 4) 231
Background image of page 2
1. Note that glycosidic likage is beta type 2. Anomeric carbon is on right side 232
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
3. - OH at anomeric carbon can be up ( β ) or down ( α ) a. So can have α - D – Sugar or β - D –Sugar 4. Hemiacetal end is free to open or close 5. Acetal end is not free to open or close B. Alpha (1 ---->4) 233
Background image of page 4
C. Alpha (1 -----> 6) 234
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
III. Oligosaccharides – Examples A. D-Cellobiose - from partial hydrolysis of cellulose 1. Cellobiose + HCl --------> 2 Glucoses 2. Type of linkage β(1 -- 429 3. Note α -D-cellobiose and β- D- cellobiose 235
Background image of page 6
4. Enzyme cellulase in microbes that reside in termites or in the rumen of the cow’s stomach 236
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
B. D- Maltose - from partial digestion of starch 1. Maltose + HCl -------> 2 Glucoses 2. Type of linkage α(1 -- 429 3. Note α -D-maltose and β -D- maltose 4. Compare maltose to cellulose 237
Background image of page 8
5. Used in baby foods and in malted milk 6. In body there is an enzyme maltase that converts maltose to 2 glucoses 238
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
C. D-Isomaltose 1. Isomaltose + HCl ------> 2 Glucoses 2. Type of linkage α (1 ---->6) 3. Note α -D-isomaltose and β -D- isomaltose 239
Background image of page 10
4. Enzyme maltase will not break the α (1 --->6) link 240
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
D. D- Gentiobiose 1. Gentiobiose + HCl -----> 2 Glucoses 2. Type of linkage is β (1 ----> 6) 3. Note α -D-gentiobiose and β -D- gentiobiose 241
Background image of page 12
E. D-Trehalose 1. Trehalose + HCl ------> 2 Glucoses 2. Type of linkage ( α 1 ----> α 1) 3. Note that there is no α or β -D- trehalose; only D-trehalose a. Both rings are locked shut 4. Function - It is a major constituent of the circulating fluid (hemolymph) of insects. As such it serves as an energy storage compound 242
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
F. D- Lactose (Milk Sugar) 1. Lactose + HCl ------> Galactose + Glucose 2. Connected by β (1 ----> 4) link 3. Order of sugars is important a. Gal β (1 ---->4 )Glu is not same as Glu β (1 ---> 4)Gal 4. Note there is α -D-Lactose and β - D-Lactose 243
Background image of page 14
enzyme called
Background image of page 15

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 16
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 53

Carbohydrate II Transparencies - rajecCarbohydrates...

This preview shows document pages 1 - 16. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online