EN
Suspension cells of Panax ginseng C.A. Meyer were cultivated in 3-L balloon-type bubble bioreactors and the bioreactor with the angle of 90º at the bottom side was optimized. The gaseous composition in plant cell and tissue cultures is regarded as an important factor affecting the plant growth. Gas hold-up was remarkably higher in the bioreactor with an angle of 90º than the other ones. Aeration rates impacted on the growth ratio, the specific O2 uptake rate (SOUR) of ginseng cells were investigated. 0.4 vvm was selected as the optimal aeration rate with a dry weight of 6.45 g L-1. The specific O2 uptake rate in the culture time was detected and reached the top value at the maximum growth ratio.