Question

Which of the following is true for single cell protein?

(a) Algae cannot be used in single cell protein

(b) It is produced through fermentation

(c) It does not contain carbohydrates and vitamins

(d) Its utilization increases environmental pollution

This question was addressed to me during an online interview.

I would like to ask this question from Large in division An Overview of Biological Basics & Enzymes of Bioprocess Engineering

Answer 1

Right option is (b) It is produced through fermentation

Best explanation: Single-cell proteins develop when microbes ferment waste materials (including wood, straw, cannery, and food-processing wastes, residues from alcohol production, hydrocarbons, or human and animal excreta). The problem with extracting single-cell proteins from the wastes is the dilution and cost. They are found in very low concentrations, usually less than 5%. Engineers have developed ways to increase the concentrations including centrifugation, flotation, precipitation, coagulation, and filtration, or the use of semi-permeable membranes.