48260

D-(+)-Galattosio

suitable for microbiology, ≥99.0%

• Sinonimo/i: Galattosio
• Formula empirica (notazione di Hill): C₆H₁₂O₆
• CAS Number: 59-23-4
• Peso molecolare: 180.16
• Beilstein: 1724619
• Numero CE: 200-416-4
• Numero MDL: MFCD00151230
• Codice UNSPSC: 41106212
• ID PubChem: 329757362
• NACRES: NA.85

Proprietà

• Livello qualitativo: 200
• Saggio: ≥99.0% (sum of enantiomers, HPLC); ≥99.0%
• Stato: powder
• Attività ottica: [α]20/D +80±1°, 24 hr, c = 5% in H₂O
• Residuo alla calcinazione: ≤0.1% (as SO₄)
• Perdita: ≤0.1% loss on drying
• Punto di fusione: 167-170 °C (dec.); 168-170 °C (lit.)
• Solubilità: H₂O: 0.1 g/mL, clear, colorless
• Anioni in tracce: chloride (Cl^-): ≤50 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• Cationi in tracce: 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
• applicazioni: microbiology
• Stringa SMILE: 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; GZCGUPFRVQAUEE-KCDKBNATSA-N

Descrizione

Descrizione generale

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.

Applicazioni

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

Informazioni sulla sicurezza

• Codice della classe di stoccaggio: 11 - Combustible Solids
• Classe di pericolosità dell'acqua (WGK): WGK 3
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable
• Dispositivi di protezione individuale: Eyeshields, Gloves, type N95 (US)