Overview
Beef Extract Powder Medium is a dehydrated culture medium formulated from beef extract, peptones, and salts. It serves as a nutrient-rich base for cultivating bacteria in clinical, industrial, and research laboratories. The powder form ensures long shelf life and easy reconstitution with water. First developed in the late 19th century, this medium remains a standard due to its versatility and cost-effectiveness. It is particularly valued for its ability to support the growth of non-fastidious microorganisms, making it a fundamental tool in microbiology.
Physical and Chemical Properties
The medium appears as a homogeneous light-yellow powder with a mild, characteristic odor. Its composition includes water-soluble extracts of beef muscle tissue, providing nitrogen, carbon, and essential trace elements. When dissolved, it forms a slightly turbid solution with a pH of 7.2–7.4 after sterilization. The powder is hygroscopic and requires protection from humidity to prevent clumping or degradation. Its nutrient profile is standardized to ensure batch-to-batch consistency for reproducible microbial growth.
Main Applications
Beef Extract Powder Medium is widely used in diagnostic labs for isolating pathogens from clinical samples. It also serves as a base for antibiotic susceptibility testing and vaccine production. In the food industry, it aids in detecting microbial contamination. Pharmaceutical manufacturers employ it for sterility testing of products. Research institutions utilize it for general bacterial cultivation and studies on microbial physiology.
Safety and Storage
While non-hazardous, the powder may generate dust during handling, requiring goggles and masks. Spills should be cleaned promptly to prevent slips. Store unopened containers at room temperature away from direct sunlight. Once opened, transfer contents to an airtight container with desiccant packs. Discard if discoloration or off-odors develop, as these indicate moisture damage or contamination.
B2B Procurement Guide
Industrial buyers should prioritize suppliers with ISO 13485 or ISO 9001 certification to ensure quality consistency. Request certificates of analysis for each batch, confirming sterility and performance testing. For large-scale use, consider bulk purchasing (25 kg drums) to reduce costs, but verify storage capacity. Some manufacturers offer customized formulations with added selective agents for specific applications. Lead times may vary; maintain buffer stock for critical operations.
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