If pH rises, at a certain temperature what happens to the time of bacteria destruction?
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Answer:
if ph rise it depend on tyoe of bacteria either they are more favourable to basic or acidic medium
mostky fav to basic medium so if ph destruction time eill increase
If pH rises, at a certain temperature what happens to the time of bacteria destruction?
The optimum growth pH is the most favorable pH for the growth of an organism.
The lowest pH value that an organism can tolerate is called the minimum growth pH and the highest pH is the maximum growth pH.
These values can cover a wide range, which is important for the preservation of food and to microorganisms’ survival in the stomach.
For example, the optimum growth pH of Salmonella spp. is 7.0–7.5, but the minimum growth pH is closer to 4.2.
Most bacteria are neutrophiles, meaning they grow optimally at a pH within one or two pH units of the neutral pH of 7 (see Figure 8.3.2 ).
Most familiar bacteria, like Escherichia coli, staphylococci, and Salmonella spp.
are neutrophiles and do not fare well in the acidic pH of the stomach. However, there are pathogenic strains of E. coli, S. typhi, and other species of intestinal pathogens that are much more resistant to stomach acid.
In comparison, fungi thrive at slightly acidic pH values of 5.0–6.0.
Microorganisms that grow optimally at pH less than 5.55 are called acidophiles. For example, the sulfur-oxidizing Sulfolobus spp.
isolated from sulfur mud fields and hot springs in Yellowstone National Park are extreme acidophiles.
These archaea survive at pH values of 2.5–3.5. Species of the archaean genus Ferroplasma live in acid mine drainage at pH values of 0–2.9.