this is short summary of alginate , which is useful for m.sc. student b.sc student and so on.

1. Alginate

2. Introduction
• Alginate is a linear polymer of
mannuronic acid and glucuronic acid.
• Both them being form uronic acid in
proportion ranging from 4:1 to 20:1.
• Some of mannuronic acid residue are
acetylated.

3. Strain used for production
• Pseudomonas aeruginosa
• Azobactor vinelandii
• They both are Gram negative bacteria
• The type of microorganism used and the
culture condition determined the relative
proportion of mannuronic acid and
glucuronic acid residues and the degree of
acetylation in alginate.

4. Biosynthesis of alginate

5. Applications
• Alginate are useful as thickening in food
industry.
• It is also used for immobilization of cell and
enzyme.
• Alginate with high concentration of
glucuronic acid are elastics in nature.
• While alginate with high concentration of
glucuronic acid are strong and brittle.

6. Facts about alginate
• Algal (seaweed) alginate are also polymer of
mannuronic acid glucuronic acid, and
comparable in structure with bacterial
alginates.
• But algal alginates lakes acetylation.

7. Also……..
• For commercial purposes, seaweed alginate
are more commonly used than bacterial
alginate.
• This is mainly because bacterial alginate are
relatively unstable and get easily degraded.