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A9799

Sigma-Aldrich

Agar

High gel strength, suitable for plant cell culture

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Synonym(s):
Agar-agar, Gum agar
Linear Formula:
(C12H18O9)n
CAS Number:
EC Number:
MDL number:
NACRES:
NA.21

biological source

algae (Rhodophyceae)

form

powder

technique(s)

cell culture | plant: suitable

transition temp

transition temp 32-38 °C (1.5%)

gel strength

>1000 g/cm2

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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This Item
A4550A7921A4800
Agar High gel strength, suitable for plant cell culture

Sigma-Aldrich

A9799

Agar

Agar Type A, suitable for plant cell culture

Sigma-Aldrich

A4550

Agar

Agar suitable for plant cell culture, powder

Sigma-Aldrich

A7921

Agar

Agar Type M, suitable for plant cell culture

Sigma-Aldrich

A4800

Agar

form

powder

form

powder

form

powder

form

powder

technique(s)

cell culture | plant: suitable

technique(s)

cell culture | plant: suitable

technique(s)

cell culture | plant: suitable

technique(s)

cell culture | plant: suitable

transition temp

transition temp 32-38 °C (1.5%)

transition temp

transition temp 32-38 °C (1.5%)

transition temp

congealing temperature 30-35 °C

transition temp

transition temp 34-36 °C

gel strength

>1000 g/cm2

gel strength

>650 g/cm2

gel strength

-

gel strength

-

application(s)

agriculture

application(s)

agriculture

application(s)

agriculture

application(s)

agriculture

General description

Agar is a natural polymer extracted from red alga Rhodophyceae, primarily, consisting of alternative D- and L-galactose units. This type of high gel strength agar is used when a firmer gel is required and mostly suitable for plant cell culture.
Agar is a polysaccharide complex obtained through bleaching and hot water extraction of agarocytes from the red alga Rhodophyceae, found in the Pacific and Indian Oceans and the sea of Japan. The genera Gelidium, Acanthopeltis, Ceramium, Pterocladia and Gracilaria predominate in agar production. Agar is composed of about 70% agarose and 30% agaropectin.

Application

Agar has been used:
  • as a component of the fruit fly diet
  • as a component of saline-agar for the approximation of gray matter from brain
  • in in vitro root nodulation assay of Glycine max seeds

Agar has been used:
  • in the preparation of laboratory diet to maintain the culture of D. melanogaster wild-type larva
  • as a high gel strength agar in the seed culture media to grow Arabidopsis thaliana mutant seeds
  • to construct a tissue-mimicking phantom to test the imaging performance of an ultrasound transducer

Biochem/physiol Actions

Agar with a higher percentage of anhydrous units in the backbone of their chemical composition provides superior mechanical stiffness and strength to the pristine hydrogel.

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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T1503
Product Number
-
25G
Pack Size/Quantity

Additional examples:

705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

enter as 1.000309185)

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Jinhyoung Park et al.
IEEE transactions on bio-medical engineering, 67(6), 1797-1805 (2019-10-22)
Interventional ultrasound imaging is a prerequisite for guiding implants and treatment within the hearts and blood vessels. Due to limitations on the catheter's diameter, interventional ultrasonic transducers have side-looking structures although forward-looking imaging may provide more intuitive and real time
Improved nodulation and seed yield of soybean (Glycine max) with a new isoflavone-based inoculant of Bradyrhizobium elkanii
Riviezzi B, et al.
Rhizosphere, 15, 100219-100219 (2020)
Lindsey J Gray et al.
Journal of insect physiology, 104, 60-70 (2017-12-06)
Optimal life-history strategies are those that best allocate finite environmental resources to competing traits. We used the geometric framework for nutrition to evaluate life-history strategies followed by Drosophila melanogaster by measuring the condition-dependent performance of life-history traits, including the morphology
Shannon M Boucousis et al.
NeuroImage, 63(3), 1237-1248 (2012-08-21)
Integrating intracranial EEG (iEEG) with functional MRI (iEEG-fMRI) may help elucidate mechanisms underlying the generation of seizures. However, the introduction of iEEG electrodes in the MR environment has inherent risk and data quality implications that require consideration prior to clinical
Agar gel strength: A correlation study between chemical composition and rheological properties
Bertasa M, et al.,
European Polymer Journal, 123, 109442-109442 (2020)

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