A5306
Bacteriological agar
for molecular biology
Synonym(s):
Agar, Agar-agar, Gum agar
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About This Item
Linear Formula:
(C12H18O9)n
CAS Number:
UNSPSC Code:
50405901
NACRES:
NA.31
EC Number:
232-658-1
MDL number:
eCl@ss:
42040102
grade
Molecular Biology
Quality Segment
form
powder
SMILES string
O1[C@@H]([C@@H]([C@@H]([C@H](C1OC2[C@H]3OCC2OC([C@H]3O)C)O)OC)O)CO
InChI
1S/C14H24O9/c1-5-8(16)13-11(7(21-5)4-20-13)23-14-10(18)12(19-2)9(17)6(3-15)22-14/h5-18H,3-4H2,1-2H3/t5?,6-,7?,8-,9+,10-,11?,12+,13+,14?/m1/s1
InChI key
GYYDPBCUIJTIBM-DYOGSRDZSA-N
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
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.
Analysis Note
A purified agar in which the original naturally occurring pigments, salts and miscellaneous matter have been reduced to a minimum.
Storage Class
11 - Combustible Solids
wgk
WGK 1
ppe
Eyeshields, Gloves, type N95 (US)
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