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Microbial Growth - Coggle Diagram
Microbial Growth
Requirements for Growth
chemical requirements for growth: C, N, S, P, O sources, trace elements, and organic growth factors.
Physical requirements for growth: temp, pH, osmotic pressure.
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Buffers are chemicals (phosphate salts or peptones) added to lab media to resist changes in pH and enhance growth
staphylococcus aureus is halophilic (salt loving) grows well in 7.5% salt and at high osmotic pressure
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Bacillus cereus, a L Gram +, strepto bacillus form spores which are not killed by heating, but germinate as the food cools down.
C is the structural bkgrnd of organic comp. A heterotroph gets C from org. comp. autotroph gets C from CO2.
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Define and Reproduction
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on solid media, colonies are formed
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