Vitamin B_{12} is produced directly during th | vedclass

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(D) It has been demonstrated that $Propionibacterium$ species have the highest potential to accumulate vitamin $B_{12}$ intracellularly.$Propionibacte

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Propionibacteria

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(D) It has been demonstrated that $Propionibacterium$ species have the highest potential to accumulate vitamin $B_{12}$ intracellularly.$Propionibacterium$ $shermanii$ and $Propionibacterium$ $freudenreichii$ are the most widely used species for this purpose.$Propionibacteria$ produce vitamin $B_{12}$ intracellularly and excrete mainly propionic acid and acetic acid extracellularly.All $Propionibacterium$ strains employed for vitamin $B_{12}$ production are microaerophilic and produce high yields of vitamin $B_{12}$ only under very low oxygen concentrations.

Vitamin $B_{12}$ is produced directly during the course of fermentation by

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