Calculate the percentage of relative stability, given 5 day incubation period at 37ºC.a)50%b)60%c)90%d)99%Correct answer is option 'C'. Can you explain this answer?

Question

Calculate the percentage of relative stability, given 5 day incubation period at 37&ordm;C.a)50%b)60%c)90%d)99%Correct answer is option 'C'. Can you explain this answer?

Answer

°C and 30 day incubation period at 4°C.

To calculate the percentage of relative stability, we need to use the formula:

% stability = (1 - (Nt/N0)) x 100

Where Nt is the number of surviving microorganisms after a certain time period, and N0 is the initial number of microorganisms.

For the 5 day incubation period at 37°C, let's say the initial number of microorganisms is 1000, and after 5 days, the number of surviving microorganisms is 100.

% stability = (1 - (100/1000)) x 100
% stability = 90%

For the 30 day incubation period at 4°C, let's say the initial number of microorganisms is also 1000, and after 30 days, the number of surviving microorganisms is 500.

% stability = (1 - (500/1000)) x 100
% stability = 50%

Therefore, the overall percentage of relative stability would be the average of the two percentages:

Overall % stability = (90% + 50%) / 2
Overall % stability = 70%

So, the overall percentage of relative stability for these two conditions is 70%.

Answer

Relative stability at 37ºC is given by, S = 100 (1-(0.630) ^T37) = 100 (1-(0.630)⁵) = 90.08% which is approximately 90%.

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