Thus, more carbon source was channeled to produce acids, instead of forming cell biomass, in the FBB, an advantage of using immobilized-cell bioreactor.
the immobilized cell fermentation from glucose, however, had a similar carbon recovery to that for the free-cell fermentation because this immobilized-cell fermentation was an earlier batch used to grow more cells required to build up the high cell density in the immobilized-cell bioreactor.
Product yield reduced when there was more cell mass being formed in the fermentation.