Litmus Milk Medium for Bacterial Metabolism Studies

Classic Differential Medium for Milk Metabolism Analysis
This time-honored litmus milk medium detects multiple bacterial metabolic activities including lactose fermentation, casein digestion, and reduction reactions through distinct color transitions.

Key Diagnostic Reactions:

• Acid production: Pink color development

• Alkalinization: Deep blue/purple shift

• Coagulation: Solidified clot formation

• Peptonization: Brown translucent fluid

Technical Specifications:
▶ Formula (per liter):
Skim Milk Powder 100.0g | Litmus 1.67g
▶ pH: 6.0-6.8 (25°C)
▶ Preparation:
101.67g/L → boil 1min → sterilize at 115°C/20min

Critical Applications:

• Differentiation of Clostridium species

• Identification of lactic acid bacteria

• Microbial physiology teaching labs