The Liofilchem® Malt Extract Broth Modified is a basal liquid medium designed for the isolation, cultivation, and enumeration of yeasts and molds. With its nutrient-rich formulation, it supports robust fungal growth, making it ideal for environmental, pharmaceutical, and food microbiology applications.
Key Features
- Optimized for Yeasts and Molds:
- Provides essential nutrients and optimal pH for fungal growth while minimizing bacterial contamination.
- Comprehensive Nutritional Profile:
- Malt extract, peptone, and papaic digest of liver deliver the necessary carbon, proteins, and nutrients.
- Ease of Use:
- Simple preparation with dehydrated powder and straightforward incubation procedure.
- Wide Application:
- Suitable for environmental monitoring, quality control, and microbial enumeration.
Specifications
Formula
Component | Amount (g/L) |
---|
Malt Extract | 17.0 |
Peptone | 1.5 |
Papaic Digest of Liver | 1.5 |
Final pH (at 25°C) | 5.4 ± 0.2 |
Physical Properties
Parameter | Details |
---|
Dehydrated Medium | Free-flowing, homogeneous, beige |
Prepared Medium | Clear, very light amber |
Environmental and Storage
Condition | Details |
---|
Storage Temperature | 10-30°C |
Shelf Life | 4 years |
Packaging Options
Reference | Content | Packaging |
---|
610348 | 500 g | Plastic Bottle |
620348 | 100 g | Plastic Bottle |
Applications
- Food and Beverage:
- Ensures product safety by monitoring yeast and mold contamination.
- Pharmaceuticals:
- Verifies fungal growth in raw materials and finished products.
- Environmental Monitoring:
- Tracks fungal presence in air and surface samples.
- Microbial Enumeration:
- Suitable for fungal count in a variety of samples.
Usage Guidelines
Preparation
- Suspend 20 g of powder in 1 liter of distilled or deionized water.
- Heat to boiling while stirring to ensure complete dissolution.
- Dispense into tubes or containers and autoclave at 121°C for 15 minutes.
Technique
- Inoculate the medium with the test sample.
- Incubate at 30 ± 2°C for 48-72 hours.
- Observe for turbidity, indicating microbial growth.
Interpretation of Results
- Turbidity in the broth confirms the growth of yeasts or molds.
Microbial Performance
Microorganism | ATCC® | Growth |
---|
Candida albicans | 10231 | Good |
Aspergillus niger | 16404 | Good |
Saccharomyces cerevisiae | 9763 | Good |
Advantages
- Reliable Detection:
- Supports consistent fungal growth for accurate results.
- Nutrient-Rich:
- Provides essential carbon and proteins to a wide variety of fungi.
- Optimal pH:
- Encourages fungal growth while restricting bacterial proliferation.
- Convenient Storage:
- Long shelf life ensures stability and availability.
Warnings and Precautions
- Use only by trained laboratory personnel.
- Store in a dry, dark environment to prevent contamination or deterioration.
- Dispose of waste in compliance with local and national regulations.
References
- Reddish (1919). Abstr. Bacteriol. 3:6.
- Thom and Church (1926). The Aspergilli.
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