Growth of hairy root cultures of strawberry (Fragaria ¥ ananassa Duch.) in three different types of bioreactors

Hairy roots of strawberry were cultivated in three different types of bioreactors: an air-sparged bioreactor (control), a droplet bioreactor and a mist bioreactor. The highest biomass yields (3.7 g dry wt/l) were achieved in the air-sparged and in the mist bioreactor. In the droplet bioreactor the cultivation medium was insufficiently atomized into droplets and nutrient uptake and growth were slower due to uneven wetting of hairy roots.