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Alginate Oligosaccharides

Alginates are linear polysaccharides found in the brown seaweeds (Phaeophyceae). They contain β(1,4)-linked mannuronic acid and α-(1,4)-linked guluronic acid in blocks of polymannuronic acid (M-blocks), polyguluronic acid (G-blocks) and alternating M&G (MG blocks). Oligosaccharides derived from alginates are produced either by enzymatic action (alginate lyase) or acid hydrolysis. However, the enzyme-derived oligosaccharides differ from those produced by acid hydrolysis due to unsaturation with a double bond between positions 4-5 at the non-reducing terminal. Acid-derived oligosaccharides do not have this feature and are fully saturated although they are much more difficult to produce due to the electron-withdrawing nature of the carboxyl group. It is for this reason that most studies have been undertaken with unsaturated enzyme-derived oligomers. Claims have been made in a number of publications that these oligosaccharides have antioxidant properties when used as food additives. Other reports suggest that they can act as growth-promoters in agriculture and that they may possess anti-tumoral and anti-inflammatory activity.

Code Cas No Product Description
OD45238

Di-mannuronic acid sodium salt

b1-4 mannuronobiose derived from alginate by enzymatic or acid hydrolysis
OH61664 183437-50-5

Hexa-guluronic acid sodium salt

a1-4 hexa guluronosaccharide from alginate by enzymatic or acid hydrolysis
OH61660

Hexa-mannuronic acid sodium salt

b1-4 linked mannuronohexaose derived from alginate by enzyme or acid hydrolysis
OP61663

Penta-guluronic acid sodium salt

a1-4 penta guluronosaccharide from alginate by enzymatic or acid hydrolysis
OP61659

Penta-mannuronic acid sodium salt

b1-4 penta mannuronosaccharide-from alginate by enzyme or acid hydrolysis
OT61662

Tetra-guluronic acid sodium salt

a1-4 tetra guluronosaccharide from alginate by enzymatic or acid hydrolysis
OT61658

Tetra-mannuronic acid sodium salt

b1-4 tetra mannuronosaccharide-from alginate by enzyme or acid hydrolysis
OT61661

Tri-guluronic acid sodium salt

a1-4 tri guluronosaccharide from alginate by enzymatic or acid hydrolysis
OT61656

Tri-mannuronic acid sodium salt

b1-4 tri mannuronosaccharide from alginate by enzymatic or acid hydrolysis
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