MilliporeSigma
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A5306

Sigma-Aldrich

Bacteriological agar

for molecular biology

Synonym(s):
Agar, Agar-agar, Gum agar
Linear Formula:
(C12H18O9)n
CAS Number:
EC Number:
MDL number:
NACRES:
NA.31

Quality Level

form

powder

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General description

Bacteriological agar is a colloidal substance and a cell wall component, obtained from Rhodoyceae (marine algae) and Gelidium sp. Agarose combined with agaropectin forms this polysaccharide. It is also called as agar-agar and is a polymer of galactoside. This agar is soluble in boiling water but not in cold water.

Application

Bacteriological agar has been used:
  • as a component of ATCC agar for Escherichia coli culture
  • as one of the experimental diet feed for Atlantic salmon fry, to study the protein and lysine requirements for maintenance and for tissue accretion
  • as component of yeast extract peptone dextrose medium, Luria broth medium and synthetic complete drop out medium for Escherichia coli culture

Packaging

1 kg in poly bottle

Biochem/physiol Actions

Bacteriological agar is commonly used as a culture medium for microorganism. It is useful for fermentation process. Agar-agar serves as a preservative in food processing. It also possesses various other applications such as an emulsifier, carrier, lubricant, stabilizer, laxative disintegrant in pharmaceutical and cosmetic industries. Agar-agar is also used in photographic emulsion.

Quality

A purified agar in which the original naturally occurring pigments, salts and miscellaneous matter have been reduced to a minimum.

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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