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71238

Sigma-Aldrich

Alginic acid sodium salt from brown algae

BioReagent, suitable for immobilization of micro-organisms

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Synonym(s):
Algin, Sodium alginate
CAS Number:
9005-38-3
MDL number:
MFCD00081310
NACRES:
NA.25

biological source

algae (brown)

Quality Level

100

product line

BioReagent

form

powder

ign. residue

≤30%

loss

≤15% loss on drying

color

white to light beige

pH

6.0-8.0 (10 mg/mL in H2O)

suitability

in accordance for gelation test
suitable for immobilization of micro-organisms

storage temp.

room temp

InChI

1S/C6H10O7.Na/c7-1-2(8)4(5(10)11)13-6(12)3(1)9;/h1-4,6-9,12H,(H,10,11);/q;+1/p-1/t1-,2-,3-,4?,6+;/m0./s1

InChI key

MSXHSNHNTORCAW-MPGIDXPLSA-M

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This Item
W201502A2033A1112
Sigma-Aldrich

Sigma-Aldrich

71238

Alginic acid sodium salt from brown algae

Sigma-Aldrich

Sigma-Aldrich

W201502

Sodium alginate

Alginic acid sodium salt from brown algae Medium viscosity

Sigma-Aldrich

A2033

Alginic acid sodium salt from brown algae

Alginic acid sodium salt from brown algae low viscosity

Sigma-Aldrich

A1112

Alginic acid sodium salt from brown algae

product line

BioReagent

product line

-

product line

-

product line

-

form

powder

form

-

form

powder

form

powder

color

white to light beige

color

-

color

white to brown

color

white to brown

suitability

in accordance for gelation test, suitable for immobilization of micro-organisms

suitability

-

suitability

-

suitability

-

storage temp.

room temp

storage temp.

-

storage temp.

2-8°C

storage temp.

2-8°C

Application

Alginate, a colloidal polyuronic acid structural molecule capable of gelation, is used in the preparation of colloidal biodegradable structures such as gels, biofilms, beads, nanoparticles, and microcapsules suitable for applications that range from gel based separation technologies to drug delivery and cell preservation.

Other Notes

A straight-chain, hydrophilic, colloidal, polyuronic acid composed of glucuronic and mannuronic acid residues.
Immobilization of cells; or enzymes; the alginate matrix can be liquefied by the addition of a chelating agent, making possible the recovery of developing colonies without affecting their continued growth.

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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O Smidsrød et al.
Trends in biotechnology, 8(3), 71-78 (1990-03-01)
In recent years, entrapment of cells within spheres of Ca2+ alginate has become the most widely used technique for immobilizing living cells. This versatile method includes applications ranging from immobilization of living or dead cells in bioreactors, immobilization of plant
C. Bucke
Methods in Enzymology, 135, 175-175 (1987)
W.H. Scouten
Solid Phase Biochemistry, 449-449 (1983)
Alginate: an alternative to agar in plant protoplast culture.
Adaoha Mbanaso, E.N. and Roscoe, D.H.
Plant Sci. Lett., 25, 61-66 (1982)
Andreas Blaeser et al.
Advanced healthcare materials, 5(3), 326-333 (2015-12-03)
A microvalve-based bioprinting system for the manufacturing of high-resolution, multimaterial 3D-structures is reported. Applying a straightforward fluid-dynamics model, the shear stress at the nozzle site can precisely be controlled. Using this system, a broad study on how cell viability and
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