Thermophilic bacilli grow best at temperatures between 45 °C and
70 °C, and therefore, it is possible to isolate them from different
environments such as permanently cold habitats, deep ocean-basin
cores, shallow marine hot springs, petroleum reservoirs, deep-sea
hydrothermal vents and the leachate of a waste pile from a canning
factory (Rahman et al., 2004; Bae et al., 2005).