Question

Which of the following has an application in soak and manual cleaning?

(a) Chlorine

(b) Peracetic acid

(c) QACs

(d) Amphoterics

The question was posed to me in semester exam.

I would like to ask this question from Microbiology in chapter Yeast Management & Microbiology of Fermentation Technology

Answer 1

Right answer is (c) QACs

To elaborate: Quarternary Ammonium Compounds are used in soak and manual cleaning. However, they are rarely used in CiP systems and are weak against Gram-negative bacteria. They are typically used at a concentration of 200 mg/l.