Disaccharides Flashcards
1
Q
Define reducing disaccharide (3)
A
- Free anomeric carbon in second sugar unit
- alpha and beta forms
- maltose/ isomaltose/ lactose
2
Q
Maltose is formed of
A
2 D-glucopyranose
3
Q
Maltose linkage is
A
a1,4-glucosidic
4
Q
Isomaltose is formed of
A
2 d-glucopyranose
5
Q
Isomaltose linkage
A
a1,6-glucosidic
6
Q
One of the hydrolysis products of starch and glycogen by amylase is
A
Isomaltose
7
Q
Lactose is formed of
A
D-glucopyranose
B-D-galactopyranose
8
Q
Lactose linkage
A
B1,4-galactosidic
9
Q
Define non-reducing disaccharide (3)
A
No free anomeric carbon
Both involved in linkage
No alpha and beta forms
10
Q
Sucrose is formed of (2)
A
a-D-glucopyranose
B-D-fructofuranose
11
Q
Linkage sucrose
A
a1,2-glucosidic
B2,1-fructosidic
