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G4129

Guar

Synonym(e):

Guaran

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Über diesen Artikel

CAS-Nummer:
9000-30-0
UNSPSC Code:
12352201
EC Number:
232-536-8
NACRES:
NA.25
MDL number:
MFCD00131250
Preise und Verfügbarkeit sind derzeit nicht verfügbar.
Technischer Dienst
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Unterstützung erhalten

form

powder

Quality Segment

color

beige

useful pH range

5.0-7.0 (25 °C, 1% in water)

General description

Guar is extracted from the seeds of Cyamopsis tetragonoloba. It contains polysaccharides of galactomannans. Guar is used in thickening dye solution, production of paper and as a primary gelling agent in water-based slurry explosives. It acts as a fiber deflocculent and dry-strength additive and serves as an additive to dynamite for water blocking. Guar is used as a stabilizer, emulsifier and thickener in food products. It lowers cholesterol and glucose level. Guar aids weight loss and obesity prevention.

Application

Guar has been used:
  • to maintain viscosity during in vitro starch digestion assay
  • to reduce the thinning rate of agarose gel
  • to study its effects on establishing 3D-like neural networks on microelectrode arrays (MEAs)

Biochem/physiol Actions

Guar gum has been shown to have numerous beneficial effects including improved glucose tolerance and attenuation of diabetic nephropathy.

Other Notes

Guar gum is isolated from the endosperm of the guar or gavar bean.
To gain a comprehensive understanding of our extensive range of Polysaccharides for your research, we encourage you to visit our Carbohydrates Category page.

Lagerklasse

11 - Combustible Solids

WGK

WGK 1

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable

PSA (Persönliche Schutzausrüstung)

Eyeshields, Gloves, type N95 (US)

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Analysenzertifikate (COA)

Lot/Batch Number

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Questions

1–5 of 5 Questions  

  1. I attempted to dissolve Guar Gum in water at a concentration of 0.1%. However, I observed a significant amount of insoluble matter. Could you please provide the recommended protocol for dissolving Guar Gum in water?

    1 answer

    1. This product is readily soluble in cold water. Due to its hydrophilic nature, it can absorb water up to 10 times its weight and produces high viscosity at low concentrations (e.g., 1% – 3%).

      As the product hydrates rapidly, it tends to form lumps. To ensure proper dispersion, it should be added to water under high-shear mixing. Potentially, it may be mixed with water using an immersion blender or frother.
      Please see the images below for a comparison of a low concentration solution of Gum Guar in water prior to high shear mixing with an immersion blender and after:

      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/418/501/product-dating-information-06-25-mk.pdf

      Helpful?

  3. 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?

  4. Is your product partially hydrolyzed or pure guar gum

    1 answer

    1. Product G4129 is not hydrolyzed and is all natural guar gum.

      Helpful?

  5. bonjour je voudrais connaitre le poids moléculaire de ce produit et aussi je voudrais savoir si il est stérile ou pas ?, merci

    1 answer

    1. Unfortunately, the molecular weight of this product is not determined. This material is not sterile.

      Helpful?

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