49940

ONPG Disks

suitable for microbiology

• 동의어(들): β-Galactosidase Test Disks, 2-Nitrophenyl-β-D-galactopyranoside Disks
• UNSPSC 코드: 41171621
• NACRES: NA.85

속성

• Agency: according to GB 4789.4-2016
• 제품 라인: BioChemika
• 유통기한: limited shelf life, expiry date on the label
• 기술: microbe id | specific enzyme detection: suitable
• 응용 분야: environmental; food and beverages; microbiology
• 배송 상태: wet ice
• 저장 온도: 2-8°C
• 적합성: Escherichia coli; bacteria

설명

일반 설명

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.

포장

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

안전성 정보

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable
• 개인 보호 장비: Eyeshields, Gloves, type N95 (US)