Oxoid™ Raka Ray Agar Base 500g

Oxoid™ Raka-Ray Agar Base is a selective medium used for the isolation of lactic acid bacteria, particularly from beer and brewing processes. This medium is ideal for detecting spoilage organisms such as Lactobacillus and Pediococcus, which can negatively impact beer flavor and quality. It is widely recommended for use in brewing industry standards and helps isolate these microorganisms for quality control testing.

Key Features:

• Form: Dehydrated powder
• Weight: 500g
• Application: Selective isolation of lactic acid bacteria from beer, brewing processes, and other relevant samples
• Composition: Contains yeast extract, tryptone, liver concentrate, sugars (maltose, fructose, glucose), and selective agents to favor the growth of lactic acid bacteria
• Preparation: Suspend 77.1g of powder in 1 liter of distilled water, mix thoroughly, and autoclave at 121°C for 15 minutes. Once cooled, add specific additives such as phenylethanol
• Yield: Approximately 6.5 liters of prepared medium
• Storage: Store the dehydrated medium at 10–30°C, away from moisture and light
• Compliance: Suitable for use in microbiological protocols for isolating lactic acid bacteria, especially in brewing applications

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