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71238

Sigma-Aldrich

Alginic acid sodium salt from brown algae

BioReagent, suitable for immobilization of micro-organisms

Sinonimo/i:

Algin, Sodium alginate

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50 G
CHF 46.60
250 G
CHF 178.00
1 KG
CHF 587.00

CHF 46.60

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50 G
CHF 46.60
250 G
CHF 178.00
1 KG
CHF 587.00

About This Item

Numero CAS:
9005-38-3
Numero MDL:
MFCD00081310
Codice UNSPSC:
12352201
NACRES:
NA.25

CHF 46.60

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Origine biologica

algae (brown)

Nome Commerciale

BioReagent

Stato

powder

Residuo alla calcinazione

≤30%

Perdita

≤15% loss on drying

Colore

white to light beige

pH

6.0-8.0 (10 mg/mL in H2O)

Compatibilità

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

Temperatura di conservazione

room temp

Stringa SMILE

[Na+].[O-]C(=O)C1O[C@H]([C@H]([C@H]([C@@H]1O)O)O)O

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
MSXHSNHNTORCAW-MPGIDXPLSA-M

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Applicazioni

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.

Altre note

A straight-chain, hydrophilic, colloidal, polyuronic acid composed of guluronic and mannuronic acid residues.
To gain a comprehensive understanding of our extensive range of Polysaccharides for your research, we encourage you to visit our Carbohydrates Category page.
Immobilization of cells[1][2]; or enzymes[3]; 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[4].

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 1

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

Eyeshields, Gloves, type N95 (US)

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Certificati d'analisi (COA)

Lot/Batch Number
BCCM9496
BCCM1653
BCCK6329
BCCH6472
BCCH6471

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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)
Mikhail Y Maslov et al.
Journal of controlled release : official journal of the Controlled Release Society, 194, 257-265 (2014-09-23)
Prior studies in small mammals have shown that local epicardial application of inotropic compounds drives myocardial contractility without systemic side effects. Myocardial capillary blood flow, however, may be more significant in larger species than in small animals. We hypothesized that
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Questions

1–6 of 6 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

  3. What is the viscosity of the alginate?

    1 answer

    1. The viscosity is not determined for this product on a lot specific basis. However, the viscosity is generally between 100 - 200 mPa sec for a 1% solution at 20°C. Please note that the viscosity is not a listed test specification and has not been validated.

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  4. What is the viscosity of this product?

    1 answer

    1. The viscosity of product is not tested on a lot specific basis, however historical values indicate a range of 100 - 200 cP at 1% in water, 20 °C.

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  5. WHAT IS THE MANNURONIC ACID TO GULURONIC ACID (M/G) RATIO OF THIS PRODUCT (71238)?

    1 answer

    1. The guluronic acid content in this product is approximately 70 % and the mannuronic acid content is approximately 30 %

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  6. What is the average molecular weight?

    1 answer

    1. The molecular weight is approx. 100,000 - 200,000 g/moL.

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