Question

Which of the following is source of single cell protein?

• A. $Bacillusthuringiensis$
• B. $Methylophilusmethylotrophus$
• C. $Saccharomycescerevisiae$
• D. $Azospirillum$

Answer 1

The correct option is B $Methylophilusmethylotrophus$

$Bacillusthuringiensis$ :
$Bacillusthuringiensis$ is used as a biological pesticide globally.

$Azospirillum$ :
$Azospirillum$ helps in nitrogen fixation.

$Azospirillum$ helps in nitrogen fixation.
Saccharomyces cerevisiae can be used as SCP. 30 to $50\%$ of its dry weight is made up of protein but bacteria has 50 to $80\%$ of its dry weight as protein.

$Methylophilusmethylotrophus$
$Methylophilusmethylotrophus$ is a bacterial species that is used as SCP. Since it has a high rate of growth (generation time- 2 hours), the production of protein per day is 25 tonnes $(25\times {10}^{3}kg)$ which is much higher than the regular food sources of protein. It has 50 to $80\%$ of its dry weight as protein.