Merck
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文件

1.07004

Millipore

GranuCult® Oxford Agar (Base)

pkg of 500 g, according to FDA (BAM), ISO 11290, for Listeria spp.

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别名:
Listeria selective agar

Agency

ISO 11290

质量水平

管理合规性

according to FDA (BAM)

形式

medium granules (dehydrated (DCM))

包装

pkg of 500 g

制造商/商品名称

GranuCult®

技术

microbiological culture: suitable

pH值(酸碱度)

6.9-7.1 (35 °C, 58.5 g/L in H2O, after autoclaving)

溶解性

58.5 g/L

堆积密度

810 kg/m3

应用

food and beverages
microbiology

储存温度

15-25°C

适用性

Listeria spp. (spp.)

一般描述

GranuCult® Oxford Agar (Base) formulation is based on Columbia Agar with the addition of lithium chloride, acriflavin, colistin sulfate, cefotetan, cycloheximide, and fosfomycin. These ingredients suppress the growth of the common bacteria (e.g., Gram-negative bacteria and a greater part of Gram-positive bacteria). Lithium chloride is one of the ingredients of Oxford Agar base, while the other substances are derived from the Oxford Listeria Selective Supplement (1.07006). Listeria monocytogenes hydrolyses esculin to esculetin and forms a black complex with iron (III) ions, thereby producing brown-green colored colonies with a black halo.

应用

GranuCult® Oxford Agar (Base) is a selective agar for the isolation and detection of Listeria monocytogenes in milk and milk products and other food products.

分析说明

Base tested with Oxford-Listeria-selektiv-supplement art. no. 1.07006.
Appearance (clearness): clear
Appearance (color): blueish-brown to greenish-brown
pH-value (25 °C): 6.8 - 7.2
Growth promotion test in accordance with the current version of DIN EN ISO 11133.
Inoculum on reference medium (Listeria monocytogenes ATCC 35152 (WDCM 00109)):
Inoculum on reference medium (Listeria monocytogenes ATCC 13932 (WDCM 00021)):
Inoculum on reference medium (Listeria innocua ATCC 33090 (WDCM 00017)):
Colony count (Listeria monocytogenes ATCC 35152 (WDCM 00109)):
Colony count (Listeria monocytogenes ATCC 13932 (WDCM 00021)):
Colony count (Listeria innocua ATCC 33090 (WDCM 00017)):
Recovery on test medium (Listeria monocytogenes ATCC 35152 (WDCM 00109)): ≥ 50
Recovery on test medium (Listeria monocytogenes ATCC 13932 (WDCM 00021)): ≥ 50
Recovery on test medium (Listeria innocua ATCC 33090 (WDCM 00017)): ≥ 50
Growth Escherichia coliATCC 25922 (WDCM 00013): total inhibition
Growth(Escherichia coli ATCC 8739 (WDCM 00012)): total inhibition
Growth (Staphylococcus aureus ATCC 25923 (WDCM 00034)): partial inhibition
Growth (Candida albicans ATCC 10231 (WDCM 00054)): partial inhibition
Black zone (Listeria monocytogenes ATCC 35152 (WDCM 00109)): black zone
Black zone (Listeria monocytogenes ATCC 13932 (WDCM 00021)): black zone
Black zone (Listeria innocua ATCC 33090 (WDCM 00017)): black zone
Incubation: up to 48 hours at 35 ± 1 °C, aerobic
A recovery rate of 50 % is equivalent to a productivity value of 0.5.
The indicated colony counts result from the sum of a triple determination.
Reference media: Tryptic Soy Agar

附注

We offer two media types: the superior granulated GranuCult® and the cost-efficient powdered NutriSelect® culture media, depending on your needs.
The designations basic, plus, or prime are added to indicate the quality control level, from basic quality control to standard QC plus to prime for full regulatory compliance.

法律信息

GRANUCULT is a registered trademark of Merck KGaA, Darmstadt, Germany
NutriSelect is a registered trademark of Merck KGaA, Darmstadt, Germany

象形图

Exclamation mark

警示用语:

Warning

危险声明

危险分类

Eye Irrit. 2 - Skin Irrit. 2

储存分类代码

11 - Combustible Solids

WGK

WGK 3


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