Question

Which of the following is not an advantage of storing yeast as a slurry?

(a) The risk of infection is controlled

(b) Transportation via pumping

(c) Attemperation is simple

(d) It is a cheap technique

The question was posed to me during an online interview.

My question is based upon Yeast Handling in Brewery topic in section Yeast Management & Microbiology of Fermentation Technology

Answer 1

Right option is (d) It is a cheap technique

The explanation: The installation of yeast storage tanks and the plant is an expensive undertaking and not cheaper. There are many advantages to store yeast as a slurry. Since the yeast is contained within a vessel, the risk of contamination or infection is less. The yeast is stored in liquid form and hence the transportation can be facilitated via pumping. The most important advantage is that the attemperation is simple than that of storing as a pressed cake.