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48260

Millipore

D-(+)-galactose

suitable for microbiology, ≥99.0%

Synonyme(s) :

Galactose

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About This Item

Formule empirique (notation de Hill):
C6H12O6
Numéro CAS:
Poids moléculaire :
180.16
Numéro Beilstein :
1724619
Numéro CE :
Numéro MDL:
Code UNSPSC :
41106212
ID de substance PubChem :
Nomenclature NACRES :
NA.85

Niveau de qualité

Pureté

≥99.0% (sum of enantiomers, HPLC)
≥99.0%

Forme

powder

Activité optique

[α]20/D +80±1°, 24 hr, c = 5% in H2O

Résidus de calcination

≤0.1% (as SO4)

Perte

≤0.1% loss on drying

Pf

167-170 °C (dec.)
168-170 °C (lit.)

Solubilité

H2O: 0.1 g/mL, clear, colorless

Traces d'anions

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤50 mg/kg

Traces de cations

As: ≤0.1 mg/kg
Ca: ≤20 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Na: ≤50 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

Application(s)

microbiology

Chaîne SMILES 

OC[C@@H](O)[C@H](O)[C@H](O)[C@@H](O)C=O

InChI

1S/C6H12O6/c7-1-3(9)5(11)6(12)4(10)2-8/h1,3-6,8-12H,2H2/t3-,4+,5+,6-/m0/s1

Clé InChI

GZCGUPFRVQAUEE-KCDKBNATSA-N

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Description générale

Galactose, a member of a group of carbohydrates known as simple sugars (monosaccharides). It is usually found in nature combined with other sugars, as, for example, in lactose (milk sugar). Galactose is also found in complex carbohydrates (see polysaccharide) and in carbohydrate-containing lipids called glycolipids. It is used as a source of carbon and contributes to energy metabolism via its conversion to glucose by the enzymes that constitute the Leloir pathway. It is used in various media for the cultivation of bacteria and fungi. The metabolic steps of D-galactose utilization are catalysed by the GalK (galactokinase), GalT (galactose 1-phosphateuridylyl transferase), and GalE (UDP-galactose-4-epimerase) proteins.

Application

Galactose can be used as a carbohydrate source for diverse organisms for example lactobacilli, coliforms, Salmonella and streptococci. It is a simple monosaccharide that serves as an energy and carbon source for the cultivation of various of bacteria, fungi and yeasts in many industries such as food, pharmaceuticals and cosmetics

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Gloves, type N95 (US)


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Culture media provides a habitat with suitable nutrients, energy sources, and certain environmental conditions for the growth of microorganisms. The components of the culture media range from simple sugars to peptones, salts, antibiotics, and complex indicators.

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