01683naa a2200265 a 450000100080000000500110000800800410001910000220006024501290008226000090021130000140022052008480023465000230108265000270110565300210113265300190115365300150117265300140118765300150120165300350121665300150125170000180126670000180128477301150130210123002017-01-19       1994    bl uuuu     u00u1 u    #d1 aCAPALBO, D. M. F.  aDevelopment of a bioreactor for semi-solid fermentation purposesbbacterial insecticide fermentation.h[electronic resource]  c1994  ap.606-608  aThe development of Bacillus thuringiensis to obtain bacterial insecticide was well studied in Brazil. In the submerged process it was studied in a 250-liter fermentor, that is semi-pilot size production, and offers the opportunity to scale up to a commercial scale. When comparing with semi-solid processes, it can be concluded that in developing countries this is a lower cost process that uses cheaper sources of carbohydrates and proteins available in those regions. Threfore, it was decided to study parameters and variables to solve the difficulties encountered in this process. Heat and mass transfer, and sterility level are important engineering aspects to be considered. Yield and productivity are fundamental to cost studies and make the semi-solid process more feasible in developing countries, using a properly designed bioreactor.  abiological control  aBacillus Thuringiensis  aBiocontrol agent  aBioinsecticide  aBioreactor  aBt spores  aProduction  aSubmerged fermentation process  aSubstrates1 aMORAES, I. O.1 aMORAES, R. O.  tIn: PROCEEDINGS OF THE INTERNATIONAL CONGRESS ON ENGINEERING AND FOOD,6., 1994, London. London: Blackie, 1994.