Propionibacteriaceae

Propionibacteriaceae

Propionibacterium acnes under a microscope.

The Propionibacteriaceae is a family of bacteria within the order Actinomycetales. This family is known for its role in the production of propionic acid, a key component in the fermentation process of certain dairy products. Members of this family are Gram-positive, non-motile, and anaerobic.

Characteristics

Propionibacteriaceae are characterized by their ability to produce propionic acid as a major metabolic end product. They are typically found in the skin, gastrointestinal tract, and in dairy products. These bacteria are rod-shaped and can exist singly or in short chains.

Genera

The family Propionibacteriaceae includes several genera, with the most notable being:

• Propionibacterium
• Acidipropionibacterium
• Cutibacterium

Each genus has distinct characteristics and ecological niches.

Propionibacterium

The genus Propionibacterium is the most well-known within the family. These bacteria are commonly used in the production of Swiss cheese, where they contribute to the characteristic flavor and the formation of holes in the cheese due to carbon dioxide production.

Cutibacterium

Cutibacterium is a genus that includes species such as Cutibacterium acnes, formerly known as Propionibacterium acnes. This bacterium is a common inhabitant of human skin and is associated with the skin condition acne.

Industrial and Medical Importance

Propionibacteriaceae have significant industrial applications, particularly in the dairy industry. They are used in the production of cheese and other fermented products. In medicine, certain species are studied for their role in skin conditions and potential probiotic benefits.

Related pages

• Actinomycetales
• Gram-positive bacteria
• Anaerobic bacteria
• Acne

Propionibacteriaceae

• 
  Propionibacterium acnes