02538 Millipore

Raka-Ray Agar

for microbiology

Synonym: Lactic Acid Bacteria Selective Agar Base

  •  NACRES NA.85



Related Categories All Solid Media/Agars, Lactobacillus, Media by Application, Media by Microorganism, Media for Brewery, Winery and Fermentations,
Quality Level   100
grade   for microbiology
form   powder
shelf life   limited shelf life, expiry date on the label
composition   N-acetyl glucosamine, 0.5 g/L
  agar, 17.0 g/L
  betaine hydrochloride, 2.0 g/L
  casein enzymic hydrolysate, 20.0 g/L
  diammonium hydrogen-citrate, 2.0 g/L
  fructose, 5.0 g/L
  glucose, 5.0 g/L
  liver concentrate, 1.0 g/L
  magnesium sulphate, 2.0 g/L
  maltose, 10.0 g/L
  manganese sulfate, 0.66 g/L
  monopotassium phosphate, 2.0 g/L
  potassium aspartate, 2.5 g/L
  potassium glutamate, 2.5 g/L
  yeast extract, 5.0 g/L
final pH   5.4±0.2 (25 °C)
Featured Industry   Agriculture
Food and Beverages
suitability   Pediococcus spp.
  selective for Lactobacillus spp.



A medium for selective isolation of lactic acid bacteria from beer and brewing processes

Preparation Note

2 vial/l Lactic Acid Supplement, modified (Cat. No. 14121)
7 ml/l Cycloheximide solution (Cat. No. 18079)

Safety & Documentation

Safety Information

GHS07  GHS07
Signal word 
Hazard statements 
Precautionary statements 
Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 


Certificate of Analysis (COA)

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Protocols & Articles


Culture Media and Tests for Beverage Testing

Spoilage organism testing is a crucial step within the beverage industry to enable the safe release of drinks to the market. Requirements can vary from industry to industry, depending on different sp...
Keywords: Culture media, Fermentation, Magnetic resonance spectroscopy

Culture Method for Quality Control of Beer

Traditional methods are based morphology, staining methods, enzyme reactions (metabolism) and diverse media. One of the first steps is the filtration of the beer followed by an incubation of the filt...
Jvo Siegrist
Microbiology Focus Edition 1.4
Keywords: Fermentation, Filtration, Magnetic resonance spectroscopy, Metabolism, Microbiology

Microbiological Media and Detection

Molecular biology-based methods, like PCR, can be used for lactobacilli detection. However, they are often quite expensive. Sigma-Aldrich provides a revolutionary molecular biology method that is rap...
Chloe McClanahan
BioFiles Edition 6.2
Keywords: Amplification, Anaerobic, Antimicrobials, Magnetic resonance spectroscopy, Molecular biology, Nucleic acid hybridization, Polymerase chain reaction, Reductions

Microbiology Introduction

An initial aim of all microbiologists is the reproducible growth of their microbial cultures, no matter whether the microorganisms are of natural origin or have been genetically engineered by man. Re...
Keywords: Absorption, Aerobic, Anaerobic, Antibiotics, Antimicrobials, Buffers, Culture media, Diffusion, Environmental, Filtration, Genetic, Growth factors, Metabolism, Phase transitions, Precipitation, Reductions, Respiration, Sample preparations, Vitamins

Microbiology Theory: Media Preparation

Microorganisms need nutrients, a source of energy and certain environmental conditions in order to grow and reproduce. In the natural environment, microbes have adapted to the habitats most suitable ...
Keywords: Culture media, Digestions, Environmental, Filtration, Growth factors, Indicators, Microbiology, Phase transitions, Precipitation, Vitamins

Probiotics and Human Health

At the beginning of the 20th century, probiotics were thought to have a beneficial effect to the host by improving the intestinal microbial balance. Through his studies and observations, the Russian ...
Chloe McClanahan
BioFiles Edition 6.2
Keywords: AGE, Absorption, Adhesion, Amplification, Anaerobic, Antimicrobials, Cancer, Carcinogens, Cell proliferation, Chromatography, Coagulation, Detoxification, Diagnostic, Diseases, Enzyme activity, Fermentation, Gas chromatography, Gastrointestinal, High performance liquid chromatography, Inflammation, Magnetic resonance spectroscopy, Metabolism, Metabolites, Molecular biology, Nucleic acid hybridization, PAGE, Pharmaceutical, Phosphorylations, Polymerase chain reaction, Prebiotics, Probiotics, Reductions, Respiratory, Sequencing, Thin layer chromatography, Titrations

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