Psychrotrophic bacteria (from other Greek: ψυχρός - cold, τροφή - “food”, also optional psychrophiles, psychroactive organisms) - bacteria that can grow at different temperatures, but multiply at temperatures below +5. Unlike psychrophilic bacteria , which require low temperatures for development (and usually live deep underwater or in ice caves), psychrotrophic bacteria live close to the Earth’s surface and have adapted to annual temperature changes. In the warm season, they show rapid growth (optimum from 22 to 30 ° C), but they can grow in cold conditions, when other organisms are inactive.
In the group of facultative psychrophiles, pathogens of human diseases were found (for example, the causative agent of plague , yersiniosis , purulent-inflammatory processes).
Psychrotrophic organisms adversely affect the taste and quality of milk, while in the process of life in chilled milk, it almost does not produce reductase , thereby depreciating reductase samples [1] .
Notes
- ↑ N.D. Kuhtyn. Psychotrophic or psychrophilic microflora of a dairy farm microbiocenosis? . // Veterinary pathology , No. 2 (29) 2009.
Literature
- psychroactive organisms . // "Microbiology: a dictionary of terms", Firsov NN, M .: Drofa, 2006.