204
K. Schügerl
Fig. 1. Measurements during the cultivation of recombinant E. coli K-12 MF cells in a 60-l
working volume air lift tower loop reactor without gene expression using SE9 antifoam agent
(AFA) [50, 51]. a Variation in the mean bubble velocity. Bubble velocity measured in situ by
an ultrasound Doppler technique. AFA added to the medium. b Variation in the specific
interfacial area (m –1 ) measured in situ by an ultrasound technique
a
b
K. Schügerl
Fig. 1. Measurements during the cultivation of recombinant E. coli K-12 MF cells in a 60-l
working volume air lift tower loop reactor without gene expression using SE9 antifoam agent
(AFA) [50, 51]. a Variation in the mean bubble velocity. Bubble velocity measured in situ by
an ultrasound Doppler technique. AFA added to the medium. b Variation in the specific
interfacial area (m –1 ) measured in situ by an ultrasound technique
a
b