CCW4691

MRS Agar in flasks

Solid culture medium for detection, isolation, and cultivation of lactobacilli and other lactic acid bacteria from food and beverages according to de Man, Rogosa and Sharpe, suitable for microbiology

• Synonym(s): Lactobacillus Agar acc. to De Man, Rogosa and Sharpe, de MAN, ROGOSA and SHARPE Agar
• UNSPSC Code: 41171607
• NACRES: NA.74

Properties

• Quality Level: 200
• form: solid
• shelf life: 12 mo. at 8‑25 °C (limited shelf life, expiry date on the label)
• feature: ready-to-use
• composition: agar, 14.0 g/L ; dipotassium phosphate, 2.00 g/L ; D-(+)-glucose, 20.0 g/L ; magnesium sulfate, 0.20 g/L ; manganese sulfate, 0.05 g/L ; meat extract, 8.00 g/L ; peptone proteose, 10.0 g/L ; polysorbate 80, 1.08 g/L ; sodium acetate, 5.0 g/L ; tri-ammonium citrate, 2.0 g/L ; yeast extract, 4.0 g/L
• packaging: box of 10 bottles
• storage condition: (Tightly closed)
• parameter: 200 mL filling volume
• bottle volume: 250 mL
• color: yellow-brown
• pH: 6.2±0.2 (25 °C)
• application(s): food and beverages; microbiology
• suitability: lactic acid bacteria

Description

General description

MRS Agar is a medium used for the cultivation of lactobacilli. It is a modification of a medium based on the highly nutritious properties of tomato juice. The addition of magnesium, manganese, and acetate, together with polysorbate, provides an improved medium for the growth of lactobacilli, including very fastidious species such as Lactobacillus brevis and Lactobacillus fermentum. The quality of the peptones, in addition to the meat and yeast extracts, combine all the necessary growth factors that make MRS medium one of the best media for the cultivation of lactobacilli. As the selectivity of this medium is low and contaminants tend to grow, subculturing in a (double layer) solid medium and then in broth is recommended to increase selectivity. In many cases, growth is encouraged by incubation in a CO₂-enriched atmosphere.

Application

MRS Agar is a medium is suitable for the detection, isolation, and cultivation of lactobacilli and other lactic acid bacteria from food and beverages.

Components

• 1 box with 10 bottles of 250 mL
• Injectable cap: Plastic screw inner cap

Other Notes

Using syringe needles with a diameter greater than 0.8 mm is not recommended.

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 2
• flash_point_f: Not applicable
• flash_point_c: Not applicable