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G1128

Sigma-Aldrich

Tragacanth

Sinonimo/i:

Gum tragacanth

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100 G
CHF 106.00
500 G
CHF 350.00
1 KG
CHF 649.00

CHF 106.00

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100 G
CHF 106.00
500 G
CHF 350.00
1 KG
CHF 649.00

About This Item

Numero CAS:
9000-65-1
Numero CE:
232-552-5
Numero MDL:
MFCD00131255
Codice UNSPSC:
12352201
NACRES:
NA.25

CHF 106.00

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Origine biologica

plant (Astragalus gummifer)

Livello qualitativo

200

Stato

powder

Colore

beige

Solubilità

H2O: 20 mg/mL

Temperatura di conservazione

room temp

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Descrizione generale

Tragacanth is a gum commonly found in the sap of various Middle Eastern legumes. It is commonly used as freezing-embedding medium for tissue preservation.

Applicazioni

When mixed with water, tragacanth yields a colloidal hydrosol. The bassorin fraction (which consists of approx. 60-70% of the compound) swells to form a gel. This swelling gives the gum tragacanth the ability to form thick, viscous dispersions and pastes. It is an effictive emulsion stabilizer.

Altre note

A complex mixture of polysaccharides including tragacanthin and bassorin.
To gain a comprehensive understanding of our extensive range of Polysaccharides for your research, we encourage you to visit our Carbohydrates Category page.

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 2

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
0000386302
0000382692
0000382693
0000364217
0000364218

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Setareh Ghorban Shiroodi et al.
The Journal of dairy research, 79(1), 93-101 (2012-11-23)
In this study, the physicochemical properties of a low-fat dried yogurt paste (kashk) were determined, and the effects of different concentrations (0, 0·1, 0·3 and 0·5% w/w) of gum tragacanth exudates from Astragalus gossypinus on the stability and texture of
Cesar A Tischer et al.
Carbohydrate research, 337(18), 1647-1655 (2002-11-09)
The polysaccharide obtained by ethanol precipitation from an aqueous solution of gum tragacanth contained arabinogalactan and tragacanthic acid, as well as starch ( approximately 0.6%). GC-MS, NMR, and ESI-MS analyses showed the structure of the arabinogalactan to be even more
C A Edwards et al.
The British journal of nutrition, 73(5), 773-781 (1995-05-01)
The exact mechanisms by which non-starch polysaccharides increase stool output are unknown. In the present study the hypothesis that the site of fermentation and short-chain fatty acid (SCFA) accumulation is related to the action of non-starch polysaccharides (NSP) on stool
D M Anderson
Food additives and contaminants, 6(1), 1-12 (1989-01-01)
Gum tragacanth (GT), affirmed as GRAS within the USA since 1961, was evaluated as 'ADI not specified' by JECFA in 1985. Within the EEC, GT has been permitted temporarily as a food additive (E413), without an ADI, since 1974; a
R Koppang et al.
The Journal of prosthetic dentistry, 73(5), 486-491 (1995-05-01)
An in vitro test is described that simulates the in vivo fate of a denture adhesive, namely destruction, dilution, and dissolution of the adhesive, by repeated measurement of tensile bond strength for the adhesive in isotonic saline over time. The
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Questions

1–3 of 3 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

      Helpful?

  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 average molecular weight?

    1 answer

    1. This material is comprised of heterogeneous polysaccharides. The molecular weight has not been determined. Various literature sources suggest a molecular weight of approximately 840 kDa. Please see the link below to review additional information:
      https://www.sciencedirect.com/topics/medicine-and-dentistry/gum-tragacanth#:~:text=Tragacanth%20gum%20is%20a%20plant,et%20al.%2C%202003).

      Note that PubChem indicates a molecular weight of 150.35 g/mol for the monomer as indicated at the link below:
      https://pubchem.ncbi.nlm.nih.gov/compound/Gum-tragacanth

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