Description
Specifications Table
| Product Name | Saline Lysine Decarboxylase Medium | M1778-500 gm Himedia |
|---|---|
| Quantity/Pack Size | 500 gm |
| Form | Powder |
| Grade | Microbiological |
| Application | Detection of lysine decarboxylase activity in bacteria |
Product Description
High-Quality Lysine Decarboxylase Medium for Reliable Bacteriological Testing
When it comes to identifying lysine decarboxylase-positive bacteria, accuracy and consistency are non-negotiable. The Saline Lysine Decarboxylase Medium from Himedia (M1778) is a specialized microbiological medium designed to support the detection of lysine decarboxylase activity, a key biochemical marker in bacterial classification.
This medium is widely used in clinical, research, and educational microbiology labs to differentiate bacterial species based on their ability to decarboxylate lysine. Whether you’re a student working on a project, a researcher validating bacterial strains, or an educator demonstrating biochemical tests, this medium ensures dependable results every time.
At eqipped, we understand the importance of using premium-grade media in your experiments. That’s why we source this product directly from Himedia, a trusted name in microbiological supplies, to guarantee purity, performance, and reproducibility.
Upgrade your lab with the best lysine decarboxylase medium available. Buy online today for seamless delivery.
How Saline Lysine Decarboxylase Medium Works
The medium contains lysine as the substrate, along with a pH indicator (usually bromocresol purple) that changes color in response to the decarboxylation of lysine. Bacteria that produce lysine decarboxylase enzyme will convert lysine to cadaverine, resulting in an alkaline pH shift. This change turns the medium from its original color (typically purple) to yellow, confirming a positive reaction.
This simple yet effective mechanism makes the lysine decarboxylase test medium an essential tool for:
- Differentiating Enterobacteriaceae and other Gram-negative bacteria
- Confirming the identity of bacterial isolates in clinical samples
- Teaching students about bacterial metabolism and identification techniques
Unlike generic broths, this medium is specifically formulated to minimize false positives and ensure clear, interpretable results. The saline base helps maintain optimal osmotic conditions for bacterial growth and enzyme activity.
Why This Medium Stands Out
Not all lysine decarboxylase media are created equal. The Himedia Saline Lysine Decarboxylase Medium is preferred by professionals for several reasons.
First, its standardized composition ensures batch-to-batch consistency, which is critical for repeatable experiments. The powder form allows for easy preparation—simply reconstitute with distilled water, autoclave, and it’s ready to use. This convenience saves time in busy labs where efficiency matters.
Second, the medium’s sensitivity is unmatched. Even low levels of lysine decarboxylase activity can be detected, making it ideal for identifying weakly positive strains. This is particularly useful in diagnostic labs where missing a positive case isn’t an option.
Finally, the medium’s long shelf life and stability mean you can stock up without worrying about degradation. Whether you’re running a few tests or hundreds, you can trust that each tube or plate will perform as expected.
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Applications in Real-World Microbiology
The versatility of Saline Lysine Decarboxylase Medium makes it a staple in various microbiological workflows. Here’s how it’s commonly used:
In clinical microbiology labs, it aids in the identification of pathogens like Salmonella, Shigella, and Klebsiella, where lysine decarboxylase production is a key differential trait. For researchers, it’s invaluable in studying bacterial metabolism, especially in projects involving amino acid decarboxylation pathways.
Educational institutions rely on this medium to teach students the principles of biochemical testing. Its straightforward protocol and clear results make it an excellent teaching tool for courses in microbiology, biochemistry, and medical lab technology.
Food and water testing labs also use lysine decarboxylase tests to monitor for bacterial contamination in samples, ensuring safety and compliance with regulatory standards.
Preparation and Usage Tips
To get the best results with your lysine decarboxylase medium, follow these best practices:
Reconstitute the powder as per the manufacturer’s instructions, typically by dissolving 500 gm in 1 liter of distilled water. Autoclave at 121°C for 15 minutes to sterilize. Allow the medium to cool before dispensing into sterile tubes or plates.
Inoculate the medium with a pure culture of the test organism and incubate at 35-37°C for 18-24 hours. Observe for a color change from purple to yellow, which indicates a positive lysine decarboxylase reaction. For control, include an uninoculated tube to verify the medium’s sterility and initial pH.
Always use aseptic techniques to prevent contamination, which can lead to false results. Store the prepared medium at 2-8°C if not used immediately, and discard any unused portion after the expiry date.
Safety and Handling
While Saline Lysine Decarboxylase Medium is generally non-hazardous, it’s important to handle it with care in a laboratory setting. Wear appropriate personal protective equipment (PPE), such as gloves and lab coats, when preparing or handling the medium. Avoid inhalation of the powder and ensure good ventilation in the workspace.
After use, dispose of the medium and any contaminated materials according to your lab’s biosafety protocols. If accidental exposure occurs, rinse the affected area with plenty of water and seek medical advice if irritation persists.
FAQs
What is Saline Lysine Decarboxylase Medium used for?
This medium is used to detect the presence of the enzyme lysine decarboxylase in bacteria. It helps differentiate bacterial species based on their ability to decarboxylate lysine, producing cadaverine and raising the pH, which is indicated by a color change in the medium.
How do I interpret the results of a lysine decarboxylase test?
A positive result is indicated by a color change from purple to yellow, meaning the bacteria produce lysine decarboxylase. No color change suggests a negative result, meaning the bacteria lack this enzyme.
Can I use this medium for other decarboxylase tests?
No, this medium is specifically formulated for lysine decarboxylase detection. For other amino acids like ornithine or arginine, you would need mediums designed for those specific tests.
How should I store the unused medium?
Store the powdered medium in a cool, dry place, tightly sealed to prevent moisture absorption. Once reconstituted, store the prepared medium at 2-8°C and use it within the recommended timeframe.
Where can I buy lysine decarboxylase medium in India?
You can buy Saline Lysine Decarboxylase Medium online from eqipped, a trusted supplier of lab consumables in India. We offer fast shipping, competitive pricing, and high-quality products for all your microbiological needs.





