Cooked Meat Medium 10mL Tube, 10/Pk

Cooked Meat Medium (also known as Robertson's Cooked Meat Medium) is a premier enrichment and maintenance medium used for the cultivation of aerobic, microaerophilic, and anaerobic microorganisms. Each tube contains 10mL of nutrient broth along with a substantial layer of sterilized beef heart tissue particles. This unique formulation is particularly renowned for its ability to initiate growth from very small inocula and to support the recovery of anaerobes—such as Clostridium and Bacteroides—without the immediate need for anaerobic jars.

The medium functions through a dual mechanism. Nutritionally, the meat particles provide a rich source of amino acids and other growth factors. Chemically, the glutathione and unsaturated fatty acids within the meat tissues act as reducing agents, effectively lowering the redox potential in the lower portion of the tube to create a self-contained anaerobic environment. This allows strict anaerobes to thrive at the bottom while aerobes grow at the top, making it an excellent "backup" broth for culturing mixed wound infections.

Additionally, Cooked Meat Medium is widely used for the preservation of stock cultures; many organisms remain viable in this medium for months or even years at room temperature. It also serves a diagnostic purpose for Clostridium species, differentiating them based on their proteolytic (digesting meat/blackening) or saccharolytic (gas production without digestion) activity.

• Versatile Enrichment: Supports aerobes, microaerophiles, and strict anaerobes.

• Self-Contained Anaerobiosis: Meat particles create a reduced environment at the tube bottom.

• Long-Term Storage: Excellent for maintaining viable stock cultures for extended periods.

• Diagnostic Utility: Differentiates Clostridia via proteolytic (blackening) or saccharolytic reactions.

• High Recovery: Initiates growth from minimal inocula in clinical specimens.

• Format: Sterile, ready-to-use 10mL tubes with meat particles.

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