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Sigma-Aldrich

AGAR (C005B-087778)

Agar chemically consists of two fractions: agarose, a neutral polymer of high gel strength and agaropectin , a non-gelling fraction with sulfated β-1,3-glycosidically linked D -galactose units. Agar is a hydrophilic colloid obtained from

Description

General description

Agar chemically consists of two fractions: agarose, a neutral polymer of high gel strength and agaropectin, a non-gelling fraction with sulfated β-1,3-glycosidically linked D-galactose units.

Agar is a hydrophilic colloid obtained from marine algae (Rhodophyceae). It is soluble in boiling water and is of significance to the microbiological area.

Application

Agar has been used in the plant growth media.
Typical working concentration: 6-12g/L.

Agar has been used:

  • as a reference standard commercial agar to compare the physio-chemical, gelling properties of alkali-treated agar from Gracilaria tenuistipitata
  • as a component in the seed germination medium and rooting medium for commercially available soybean (Glycine max (L.) Merr) seeds
  • as a component of growth media for B. subtilis mutant strain MTC871 based biofilm colonies
  • as a bacteriological agar component to prepare half strength Murashige-Skoog (MS 50%) medium for Echinocactus platycanthus seeds culture

Biochem/physiol Actions

Agar is gel forming polysaccharide used as a gelling and stabilizing agent. Its serves as a cryoprotectant in processed foods, pharmaceuticals and cosmetics products.

Other Notes

General purpose agar.

Specifications
UPC:
10171502
Condition:
New
Weight:
1.00 Ounces
HazmatClass:
No
Quantity:
25
Unit of Measurement:
KG
MPN:
A1296-25KG
CAS:
9002-18-0
Catalog No. C005B-087778
Price: $6,556.96
List Price: $7,285.51
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