Bacillus stearothermophilus

Information about Bacillus stearothermophilus

Geobacillus stearothermophilus
Scientific classification
Kingdom:Bacteria
Division:Firmicutes
Class:Bacilli
Order:Bacillales
Family:Bacillaceae
Genus:Bacillus
Species:stearothermophilus
Binomial name
Bacillus stearothermophilus
Bacillus stearothermophilus (or Geobacillus stearothermophilus)[1] is a rod-shaped, Gram-positive bacterium and a member of the division Firmicutes. The bacteria is a thermophile and is widely distributed in soil, hot springs, ocean sediment, and is a cause of spoilage in food products. It is commonly used as a challenge organism for steam sterilization validation studies and periodic check of sterilization cycles. The biological indicator contains spores of the organism on filter paper inside a vial. After autoclaving/sterilizing the cap is closed, an ampule of growth medium inside of the vial is crushed and the whole vial is incubated. A color change indicates the results of sterility, no growth of the spores or non-sterility, growth of the spores.

An example of this type of biological indicator using this bacillus is Getinge's Biosign Steam-24.

References

1. ^ [1]
Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. Scientific classification also can be called scientific taxonomy, but should be distinguished from folk taxonomy, which lacks scientific basis.
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Bacteria

Phyla

Actinobacteria
Aquificae
Chlamydiae
Bacteroidetes/Chlorobi
Chloroflexi
Chrysiogenetes
Cyanobacteria
Deferribacteres
Deinococcus-Thermus
Dictyoglomi
Fibrobacteres/Acidobacteria
Firmicutes
Fusobacteria
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Firmicutes

Classes

Bacilli
Clostridia
Mollicutes
The Firmicutes are a division of bacteria, most of which have Gram-positive cell wall structure.
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Bacilli

Orders

Bacillales
Lactobacillales

Bacilli specifically refers to a taxonomic class of bacteria. It includes two orders, Bacillales and Lactobacillales, which contain several well-known pathogens like Bacillus anthracis
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Bacillales

Families

Alicyclobacillaceae
Bacillaceae
Caryophanaceae
Listeriaceae
Paenibacillaceae
Planococcaceae
Sporolactobacillaceae
Staphylococcaceae
Thermoactinomycetaceae
Turicibacteraceae
The Bacillales
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Bacillaceae
Garrity et al. 2001

Genera

Alkalibacillus
Amphibacillus
Anoxybacillus
Bacillus
Caldalkalibacillus
Cerasibacillus
Exiguobacterium
Filobacillus
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Bacillus
Cohn 1872

Species

Bacillus anthracis
Bacillus cereus
Bacillus coagulans
Bacillus globigii
Bacillus licheniformis
Bacillus megaterium
Bacillus natto

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binomial nomenclature is the formal system of naming species. The system is also called binominal nomenclature (particularly in zoological circles), binary nomenclature (particularly in botanical circles), or the binomial classification system.
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Gram-positive bacteria are those that retain a crystal violet dye during the Gram stain process.[1] Gram-positive bacteria appear blue or violet under a microscope, while Gram-negative bacteria appear red or pink.
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Bacteria

Phyla

Actinobacteria
Aquificae
Chlamydiae
Bacteroidetes/Chlorobi
Chloroflexi
Chrysiogenetes
Cyanobacteria
Deferribacteres
Deinococcus-Thermus
Dictyoglomi
Fibrobacteres/Acidobacteria
Firmicutes
Fusobacteria
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Firmicutes

Classes

Bacilli
Clostridia
Mollicutes
The Firmicutes are a division of bacteria, most of which have Gram-positive cell wall structure.
..... Click the link for more information.
thermophile is an organism – a type of extremophile – which thrives at relatively high temperatures, above 45 °C. Many thermophiles are archaea.

Thermophiles are found in various geothermally heated regions of the Earth such as hot springs like those in
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