BACILLUS | Geobacillus stearothermophilus (Formerly Bacillus stearothermophilus)

Geobacillus stearothermophilus (formerly Bacillus stearothermophilus) is a thermophilic, aerobic bacterium, which produces heat-resistant spores. It forms biofilms attaching to stainless steel surfaces in dairy plants. Although the bacterium has no public health significance, its presence in canned foods, milk powders, and ingredients is of interest. It is the typical species responsible for the thermophilic flat sour spoilage of low-acid canned foods. Adequate handling of canned foods at temperatures below the minimum required for growth can avoid food spoilage. Geobacillus stearothermophilus produces a wide range of thermostable enzymes with industrial applications.