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Disques ONPG, pour détect° de présence de Beta-galactosidase

Pour microbiologie. Disques impregnés avec o-nitrophényl-Beta-D-galactopyranose

Référence : 3826625

Unité de vente : 50

80.00 €HT

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ONPG Disks are used to detect the presence of β-galactosidase, an enzyme found in lactose-fermenting organisms. Lactose utilization depends upon two enzymes: β-galactoside permease, which catalyzes transport of lactose into the cell, and β-galactosidase, which breaks down lactose into galactose and glucose. β-Galactosidase is not lactose specific and can act on simple galactosides including the ONPG (o-nitrophenyl-β-D-galactopyranose) substrate. ONPG hydrolysis results in the release of galactose, and the yellow chromogenic compound, o-nitrophenol. The test substrate, ONPG, does not depend on an induced or constitutive permease enzyme to enter the cell, therefore reactions are rapid and occur within a 24-hour period even for late lactose fermenters.

Packaging : Sterile filter paper discs (50 pcs, diameter 6 mm) impregnated with o-nitrophenyl-β-D-galactopyranose.

Synonym: β-Galactosidase Test Disks, 2-Nitrophenyl-β-D-galactopyranoside Disks

Poids 1,8 Kg
Volume 0,0156 m³   (15600 cm³)
Largeur 0,25 m   (25 cm)
Longueur 0,25 m   (25 cm)
Hauteur 0,25 m   (25 cm)
Les dimensions, le poids et le volume sont bruts (emballage inclus)
Portail collaboratif Réalisé par Ovidentia, Ovidentia est une marque déposée par Cantico. Gestion