Bacteria growth Flashcards
1
Q
Food
A
2
Q
Acidity
A
Different microbes grow optimally in different ph levels, given the right ph, bacteria can grow quicker than normal (e.g. acidophiles grow best at pH < 5, neutrophiles grow optimally at pH between 5 and 9, and alkaliphiles grow fastest above pH 9 - these are 3 subgroups of bacteria).
3
Q
Temperature
A
Bacteria that causes food poisoning grows best at 5 degrees Celsius to 60 degrees Celsius.
4
Q
Time
A
Bacteria growth is exponential, so the more time it has been give to grow, the more it will grow by.
5
Q
Oxygen
A
Bacteria can only grow in the presence of oxygen, without it, bacteria cannot propagate.
6
Q
Moisture
A
Moisture is essential in bacteria growth, food with a higher moisture content are more susceptible to contamination.
