carbohydrates 1 Flashcards
1
Q
roles of carbohydrates in food products
A
- sweetner
- humectant: lower water activity
- energy supplier
- texture
- colour
2
Q
What are carbohydrates?
A
- ring structure
- c- h- o- atoms
- mono, di, oligo- and polysaccharides
- different residues
- different roles in food products
3
Q
oligosaccharide consist of
A
2-20
4
Q
polysaccharide consist of
A
> 200
5
Q
fructose
A
draw (ketose)
6
Q
glucose
A
draw (aldose)
7
Q
5 member ring
A
furanose
8
Q
6 member ring
A
pyranose
9
Q
5 c-atoms
A
pentose
10
Q
6 c-atoms
A
hexose
11
Q
what happens in an uronic acid
A
the primary hydroxyl group at c6 is oxidised to a carboxylic group
12
Q
galacturanic acid
A
draw
13
Q
glucuronic acid
A
draw
14
Q
saccharose
A
glucose + fructose
15
Q
maltose
A
glucose + glucose
