Alginate

Structural description

Alginic acid (algin, alginate) is a polysaccharide that is abundant in the cell walls of brown algae. (Pheophyceae, mainly laminariales and fucales) and in specific bacteria (acetylated form). Chemically, it is a linear copolymer with homopolymeric blocks of (1-4)-linked β-D-mannuronate (M) and its C-5 epimer α-L-guluronate (G) residues, respectively, covalently linked together in different sequences or blocks.

The monomers can appear in homopolymeric blocks of consecutive G-residues (G-blocks), consecutive M-residues (M-blocks), alternating M and G-residues (MG-blocks) or randomly organized blocks.

Activities and Uses

Alginates are widely used as waterproofing and fireproofing fabrics, as a gelling agent, for thickening drinks, ice cream and cosmetics, as a detoxifier that can absorb poisonous metals from the blood, as food additives (E number from E400 to E405), healthcare products (rheological properties)…

Alginates also show health benefits as dermal fibroblast Modulators and antitumoral as well.

Finally, the so called compounds are described as products intended for agriculture applications (Courtois, Current Opinion in Microbiology, 2009, 12:261–273).

Alginate

Guluronate oligosaccharides DP25-DP45

trait
ALG610

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Oligosaccharides prepared by β(1-4) linked D-guluronate block hydrolysis from Chorda filum. Sodium salt.
Degree of polymerization (DP) range : 25-45.
M/G ratio>4
Alginate

Mannuronate oligosaccharides DP4 - 10 mg

trait
ALG544

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Oligosaccharides prepared by β(1-4) linked D-mannuronate block hydrolysis. Sodium salt.
Average Degree of polymerization (DP): 4.
M/G ratio>4
Alginate

Mannuronate oligosaccharides DP3

trait
ALG543

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Oligosaccharides prepared by β(1-4) linked D-mannuronate block hydrolysis. Sodium salt.
Average Degree of polymerization (DP): 3.
M/G ratio>4
Alginate

Mannuronate oligosaccharides DP2 - 10 mg

trait
ALG542

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Oligosaccharides prepared by β(1-4) linked D-mannuronate block hydrolysis. Sodium salt.
Average Degree of polymerization (DP): 2.
M/G ratio>4
Alginate

Guluronate oligosaccharides DP4 - 10 mg

trait
ALG344

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α(1,4) linked guluronate oligosaccharides
Alginate

Guluronate oligosaccharides DP2 - 10 mg

trait
ALG342

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α(1,4) linked guluronate oligosaccharides
Alginate

Guluronate oligosaccharides DP3 - 10 mg

Guluronate oligosaccharides DP3 - 10 mg
trait
ALG343

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α(1,4) linked guluronate oligosaccharides
Alginate

Mannuronate oligosaccharides DP20-DP35

trait
ALG601

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Oligosaccharides prepared by β(1-4) linked D-mannuronate block hydrolysis from Chorda filum. Sodium salt.
Degree of polymerization (DP) range : 20-35.
M/G ratio>4
Alginate

Mannuronate oligosaccharides DP30-DP50

trait
ALG600

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Oligosaccharides prepared by β(1-4) linked D-mannuronate block hydrolysis from Chorda filum. Sodium salt.
Degree of polymerization (DP) range : 30-50.
M/G ratio>4
Alginate

Alginate polysaccharides (from Chorda f.)

Alginate polysaccharides (from Chorda f.)
trait
ALG103

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Sodium salt alginates extracted and purified from brown seaweed Chorda filum
Alginate

Alginate polysaccharides (from Ascophyllum n.)

Alginate polysaccharides (from Ascophyllum n.)
trait
ALG102

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Sodium salt alginates extracted and purified from
brown seaweed Ascophyllum nodosum
[9005-38-3]
Alginate

Alginate polysaccharides (from Fucus v.)

Alginate polysaccharides (from Fucus v.)
trait
ALG101

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Sodium salt alginates extracted and purified from
brown seaweed Fucus vesiculosus
[9005-38-3]
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