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Merck

A9799

Agar

High gel strength, suitable for plant cell culture

Sinónimos:

Agar goma, Agar-agar

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

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SMILES string

O1[C@@H]([C@@H]([C@@H]([C@H](C1OC2[C@H]3OCC2OC([C@H]3O)C)O)OC)O)CO

InChI key

GYYDPBCUIJTIBM-DYOGSRDZSA-N

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

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

Quality Level

200

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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.

Clase de almacenamiento

11 - Combustible Solids

wgk

WGK 1

ppe

Eyeshields, Gloves, type N95 (US)

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Certificados de análisis (COA)

Lot/Batch Number
SLCJ0793
SLCD7140
SLCD6068
SLBX5017
SLBW0976

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Frontiers in plant science, 11, 563-563 (2020-06-26)
Magnesium (Mg) is essential for many biological processes in plant cells, and its deficiency causes yield reduction in crop systems. Low Mg status reportedly affects photosynthesis, sucrose partitioning and biomass allocation. However, earlier physiological responses to Mg deficiency are scarcely
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Agar gel strength: A correlation study between chemical composition and rheological properties
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Sensors (Basel, Switzerland), 18(7) (2018-07-18)
The superharmonic imaging of tissue has the potential for high spatial and contrast resolutions, compared to the fundamental and second harmonic imaging. For this technique, the spectral bandwidth of an ultrasound transducer is divided for transmission of ultrasound and reception
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