Polysaccharides - Galactomannans
6 important questions on Polysaccharides - Galactomannans
How are galactomannans processed?
What is the occurrence and variation of galactomannans?
- Storage polysaccharide that is present in many seeds
- Backbone of beta-1,4-linked mannose residues
- Substitution at O-6 with single unit side chains of alpha-linked galactose
- Gal:Man ratio differs per type:
- casia gum (G:M=1:8)
- locust bean gum (G:M=1:4)
- tara gum (G:M=1:3)
- guar gum (G:M=1:2)
- fenugreek gum (G:M=1:1)
What are the similarities and differences of cellulose and mannose?
Mannose: hydroxyl group at O2 up
Cellulose: hydroxyl group at O2 down
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How does galacturonic acid in galactomannans influence the solubility?
How does substitution of galacturonic acid in galactomannans influence the gel strength?
How do galactomannans interact with xanthan?
Both are only viscosifiers, but make a gel when combined.
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