A1296

Agar

microbiology tested, suitable for plant cell culture, suitable for cell culture, powder

• Synonym(s): Agar-agar, Gum agar
• Linear Formula: (C₁₂H₁₈O₉)_n
• CAS Number: 9002-18-0
• EC Number: 232-658-1
• MDL number: MFCD00081288
• eCl@ss: 42040102
• NACRES: NA.21

Properties

• biological source: algae (Rhodophyceae)
• Quality Level: 200
• form: powder
• technique(s): cell culture | mammalian: suitable; cell culture | plant: suitable
• transition temp: congealing temperature <38 °C (1.5% in H₂O)
• suitability: microbiology tested
• application(s): agriculture; microbiology
• storage temp.: room temp

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

Packaging

100, 500 g in poly bottle

1 kg in poly bottle

5, 10, 25 kg in poly drum

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.

Safety Information

• 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