Bioreactor (IMAGE)

Penn State

Bioreactor

Caption

Integral to the ability of biofilm reactors to produce vitamin K are specially designed internal plastic composite supports that microorganisms adhere to and on which they build intertwined colonies -- called biofilms -- that can withstand aeration and agitation needed to spur the microorganisms to secrete more vitamin K. These photos show the supports before fermentation (top), and after, covered by biofilms.

Credit

Ehsan Mahdinia/Penn State

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