what are the best conditions for microbes to grow in?
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Bacteria can live in hotter and colder temperatures than humans, but they do best in a warm, moist, protein-rich environment that is pH neutral or low acid. There are exceptions: some bacteria thrive in extreme heat or cold. some can survive under highly acidic or extremely salty conditions.
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Bacteria grow most rapidly in the range of temperatures between 40 °F and 140 °F, ( 4.4°C- 60°C) doubling in number in as little as 20 minutes. This range of temperatures is often called the "Danger Zone." To learn more about the "Danger Zone" visit the Food Safety and Inspection Service fact sheet titled Danger Zone.
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Abiotic factors to which they adapt include temperature, moisture, growing season, and soil. This is why the same type of biome in different parts of the world has organisms with similar adaptations.
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Preferences include the best pH, temperature range, amount of light, concentration of gases such as oxygen and carbon dioxide, and amount of pressure present.
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Temperature also affects mold growth. Different types of mold have minimum, optimum and maximum temperature ranges for growth. Many fungi grow well at temperatures between 60 and 80 degrees Fahrenheit, which are also ideal temperatures for human comfort.
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Temperature – food poisoning bacteria grow best in the temperature range between 5 °C and 60 °C. This is referred to as the 'temperature danger zone'. This means that we need to keep perishable food either very cold or very hot, in order to avoid food poisoning.
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['A mesophile is an organism that grows best in moderate temperature, neither too hot nor too cold, typically between 20 and 45 °C (68 and 113 °F). ... ', 'All bacteria have their own optimum environmental surroundings and temperatures in which they thrive the most.']
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Mold and bugs are attracted to the same environment, one with warmth and high levels of moisture. Mold needs at least an approximate 70 percent relative humidity to begin growing at temperatures as low as 60 degrees. And some insect species, such as camel crickets, centipedes, and cockroaches, require a lot of water.
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These colorful microorganisms are called extremophiles—these in particular are thermophiles. Bacteria may grow across a wide range of temperatures, from very cold to very hot. A mesophile is an organism that grows best in moderate temperature, neither too hot nor too cold. All human pathogens are mesophiles.
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The ideal temperature to grow is around 70° F (68 to 72) although many growers are able to grow a nice product at higher temperatures. Keep the growing medium moist until harvest.
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Nutrients – most foods contain enough nutrients for bacteria to grow. This is especially the case with potentially high-risk foods such as dairy and egg products, meat and poultry and seafood. Water – bacteria need water for their growth. Without water, growth may slow down or stop.
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In order to grow in nature or in the laboratory, a bacterium must have an energy source, a source of carbon and other required nutrients, and a permissive range of physical conditions such as O2 concentration, temperature, and pH.
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Temperature: Fungi grow best in warm temperatures. Some species of fungi do grow better at warm temperatures (70-90°F), but there are some that thrive in very high temperatures of 130-150°F and some that will thrive in very low temperatures below 32°F (below freezing).
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Psychrophiles grow best in the temperature range of 0–15 °C whereas psychrotrophs thrive between 4°C and 25 °C. Mesophiles grow best at moderate temperatures in the range of 20 °C to about 45 °C. Pathogens are usually mesophiles. Thermophiles and hyperthemophiles are adapted to life at temperatures above 50 °C.
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The biotic factors include organic matter, water and air. Plants and trees grow in the soil, and it holds the moisture for them to absorb. In addition, soil provides a habitat for soil organisms, such as worms and ants, as well as microscopic bacteria.
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Answer: Bacteriological Incubators give explicit temperature which is required for the development of the microorganisms.
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['The organism should be present whenever enteric pathogens are present.', 'The organism should be useful for all types of water.', 'The organism should have a longer survival time than the hardiest enteric pathogen.', 'The organism should not grow in water.']