What is Bacillus Thermosphacta?

Brochothrix thermosphacta is a Gram-positive, rod-shaped, nonmotile, non-spore-forming, facultative anaerobic, and psychrotrophic organism frequently involved in the spoilage of prepacked and vacuum-packaged meat or meat products (23).

How do you prevent Brochothrix Thermosphacta?

Application of bacteriocins in meat and meat products, including poultry products, is reported widely, including (1) sanitization of beef carcasses to reduce the populations of Brochothrix thermosphacta, Carnobacterium divergens, or Listeria innocua and inhibit spoilage bacteria with shelf-life extension of vacuum- …

How does Brochothrix Thermosphacta cause food spoilage?

This spoilage is partly due to its ability to tolerate high concentrations of salt and to grow at both low water activity (aw) and low temperature in the presence of little oxygen (>0.2%).

Where does lactic acid bacteria come from?

Lactic acid bacteria (LAB) are widespread microorganisms which can be found in any environment rich mainly in carbohydrates, such as plants, fermented foods and the mucosal surfaces of humans, terrestrial and marine animals.

What’s the best temperature for brochothrix to grow?

The successful spoilage of chilled products is due mainly to its psychotropic nature. It has a growth range from 0°C to 30°C, with an optimum of 20–25°C. Refrigeration temperatures will selectively favor its growth. Its pH growth range (pH 5–9) is well adequate within most meat products.

Why does brochothrix thermosphacta spoil fresh meat?

Brochothrix thermosphacta has drawn considerable attention because it frequently causes early, nonproteolytic spoilage of fresh and cured meats. This spoilage is partly due to its ability to tolerate high concentrations of salt and to grow at both low water activity (a w) and low temperature in the presence of little oxygen (>0.2%).

When does brochothrix thermosphacta produce lactic acid?

Brochothrix thermosphacta is innocuous when O 2 is absent from the packaging atmosphere. It behaves in a manner similar to homofermentative lactic acid bacteria under these conditions, producing mainly lactic acid.

What’s the best temperature for thermosphacta to grow?

As a facultative anaerobe, B. thermosphacta is well suited for growing under modified atmosphere environments. The successful spoilage of chilled products is due mainly to its psychotropic nature. It has a growth range from 0°C to 30°C, with an optimum of 20–25°C. Refrigeration temperatures will selectively favor its growth.