Psychrotrophs
Psychrotrophs
Psychrotrophs (pronunciation: /ˈsaɪ.kroʊ.trɒfs/) are a group of microorganisms that are capable of surviving or even thriving in a cold environment. These organisms are typically found in regions that have an average temperature of 20 degrees Celsius or lower.
Etymology
The term "Psychrotrophs" is derived from the Greek words "psyche" which means "soul" or "spirit", and "troph" which means "nourishment". This term was coined to describe these organisms' ability to survive in cold environments, which was seen as a testament to their "spirit" or "soul".
Characteristics
Psychrotrophs are a type of psychrophile, but unlike true psychrophiles, they can tolerate a wider range of temperatures. They are capable of growth at 0 degrees Celsius but grow optimally at temperatures between 15 and 20 degrees Celsius.
Importance
Psychrotrophs are important in the field of microbiology because they can cause spoilage in refrigerated foods. They are also significant in the study of life in extreme environments, as they can provide insights into how life might exist on other planets with cold climates.
Related Terms
- Psychrophile: A microorganism that thrives at relatively low temperatures.
- Mesophile: A microorganism that grows best in moderate temperature.
- Thermophile: A microorganism that thrives at relatively high temperatures.
External links
- Medical encyclopedia article on Psychrotrophs
- Wikipedia's article - Psychrotrophs
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