Question

The equation for Del factor is _____________

(a) ∇ = ln (N0/Nt)

(b) ∇ = ln (Nt/N0)

(c) ∇ = ln (N0)

(d) ∇ = ln (N0Nt)

The question was asked by my school teacher while I was bunking the class.

The above asked question is from Batch Sterilization in chapter Sterilization of Fermentation Technology

Answer 1

Correct answer is (a) ∇ = ln (N0/Nt)

Best explanation: The Del Factor is expressed as, ∇ = ln (N0/Nt), where N0 is the number of viable organisms present initially at the time of sterilization treatment and Nt is the number of viable organisms after the treatment.