MHA00MRS2

De Man, Rogosa and Sharpe Broth

For final product testing or in-process testing, for lactic acid bacteria, input: beverage(s)

• Synonym(s): MRS broth
• UNSPSC Code: 41106225
• eCl@ss: 32160801
• NACRES: NA.74

Properties

• Quality Level: 100
• form: liquid
• shelf life: 12 mo.
• feature: ready-to-use
• packaging: pack of 50 tests
• color: clear red-brown
• input: sample type beverage(s); sample type sport drink; sample type cider; sample type soft drink; sample type beer; sample type wine; sample type cosmetics; sample type food(s); sample type bottled water
• pH: 6.5±0.2 (25.0 °C)
• application(s): clinical; cosmetics; environmental; food and beverages; industrial qc; microbiology; water monitoring
• compatibility: for use with MF-method; for use with Microfil^®; for use with MicropreSure^®; for use with Milliflex^®
• shipped in: wet ice
• storage temp.: 2-8°C
• suitability: Lactobacillus brevis; Lactobacillus fermenti; lactic acid bacteria

Description

General description

MRS Broth is used for the enrichment, cultivation and isolation of all species of Lactobacillus. The MRS media formulation was developed by de Man, Rogosa and Sharpe {23} to replace the tomato juice medium and the meat extract tomato juice medium. It is a medium supporting good growth of lactobacilli in general, even those strains which have shown poor growth in existing media, like strains of L. brevis and L. fermenti. The MRS culture media contain polysorbate (Tween 80), acetate, magnesium and manganese which are known to act as special growth factors for Lactobacilli as well as a rich nutrient base. As these media show a very low degree of selectivity Pediococcus and Leuconostoc species as well as other secondary bacteria may grow on them. Most of the accompanying microflora can be inhibited by thallium acetate, sorbic acid, acetic acid, sodium nitrite, cycloheximide and polymyxin. Lactobacillus species appear as small, white, creamy colonies. Saccharomyces species appear as large, white, creamy colonies.{24}

Application

MRS Broth is used for final product testing or in-process testing of beverages for the contamination by lactobacilli, L. brevis and L. fermenti in Beer, Bottled Water, Cider, Soft Drink and Sport Drink. This media finds application in Clinical, Cosmetics and Food and Beverage industry.

Culture Medium

MRS

Analysis Note

Lactobacillus species appear as small, white, creamy colonies. Saccharomyces species appear as large, white, creamy colonies

QC organisms
L. casei (ATCC 393)

Legal Information

MICROFIL is a registered trademark of Merck KGaA, Darmstadt, Germany

MICROPRESURE is a registered trademark of Merck KGaA, Darmstadt, Germany

MILLIFLEX is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class Code: 12 - Non Combustible Liquids
• WGK: WGK 2
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable