Question

For a batch microbial process the specific rate of substrate utilization is $0.25$ $h^{-1}$ and specific product formation rate is $0.20$ $h^{-1}$. The yield of product based on substrate consumed ($Y_{p/s}$) will be:

• A. 0.80
• B. 1.25
• C. 0.05
• D. 0.45

Hint:

Yield = (What you get) (What you used).

Answer 1

The Correct Option is A

Step 1: Concept
The yield coefficient ($Y_{p/s}$) represents the amount of product formed per unit of substrate consumed.

Step 2: Meaning
It can be calculated as the ratio of the specific product formation rate ($q_{p}$) to the specific substrate utilization rate ($q_{s}$).

Step 3: Analysis
Given:
$q_{s} = 0.25$ $h^{-1}$
$q_{p} = 0.20$ $h^{-1}$
$Y_{p/s} = q_{p} / q_{s} = 0.20 / 0.25 = 0.80$.

Step 4: Conclusion
The yield of the product based on substrate consumed is 0.80. Final Answer: (A)