Two-stage cultivation of Digitalis lanata cells: semicontinuous production of deacetyllanatoside C in 20-litre airlift bioreactors.
A two-stage cultivation method was employed to develop a semicontinuous biotransformation process for the production of deacetyllanatoside C, a cardenolide of the important digoxin series. Digitoxin was used as the substrate for biotransformation. The process was optimized in 1-l shake flasks and then established on the 20-l scale using two airlift bioreactors, one for cell growth (working volume 12 litres) and another for deacetyllanatoside C production (working volume 18 litres). Growth and production phases were synchronized and the process finally ran semicontinuously in 7-d cycles. Six consecutive production runs were performed yielding a total of 43.8 g deacetyllanatoside C.
Kreis
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W
Pharmazeutisches Institut, Universität Tübingen, F.R.G..
Reinhard
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E
D001711:Biotransformation; D002460:Cell Line; D003892:Deslanoside / Q000096:biosynthesis*; D004070:Digitalis / Q000166:cytology* / Q000378:metabolism; D004074:Digitoxin / Q000378:metabolism; D006900:Hydroxylation; D010946:Plants, Medicinal; D010947:Plants, Toxic
D004074:Digitoxin; D003892:Deslanoside