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A8678

Sigma-Aldrich

Agar

suitable for plant cell culture

Synonym(s):

Agar-agar, Gum agar

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About This Item

Linear Formula:
(C12H18O9)n
CAS Number:
9002-18-0
EC Number:
232-658-1
MDL number:
MFCD00081288
UNSPSC Code:
50405901
NACRES:
NA.21

biological source

algae (Rhodophyceae)

form

powder

technique(s)

cell culture | plant: suitable

mp

80-90 °C (1.5% in water)

transition temp

transition temp 27-37 °C (1.5%)

application(s)

agriculture

storage temp.

room temp

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

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General description

Agar or Agar-agar is one of the major components found in the cell wall of red algae. It is a polysaccharide complex, comprising about 70% agarose and 30% agaropectin.

Application

Washed agar has been used:
  • as a supplement (0.9% w/v) to Murashige and Skoog basal medium for plant growth
  • in the preparation of cocultivation medium for Agrobacterium tumefaciens mediated transformation in maize (Zea mays) hybrid Hi-II
  • as a component in the complete medium to regenerate protoplasts of Piriformospora indica
  • as a clean agar medium to culture Synechococcus WH7803 strain

Biochem/physiol Actions

Agar is an ester of sulfuric acid in a linear galactan form, that makes it soluble in hot water and insoluble in cold. Washed agar contain less impurities and low level of nutrients.

Preparation Note

Washed

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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