OTR influenced by the medium Left:OTR influenced by the viscosity of the medium Right:OTR influenced by the surface of the medium r200 100. Candide 100 0 00 Aspergillus 0 0 Water Water 0 10 20 30 Water +CSL Biomass concentration (kg m-3) +Maize oil +Maize oil Left:Effect of concentration of Aspergillus niger and Candida utilis on the KLa value in a stirred tank reactor(From data of Brierly,ApplMicrob.,7,57,1959)and Yagi-Yoshida,J. Ferm.Technol.,52,905,1974).Right:Effect of com steep liquor(CSL)and maize oil on the oxygen transfer capacity in a 10L stimed tank reactor.Data obtained from sulphite oxidation experiments.Left: OTR influenced by the viscosity of the medium Right: OTR influenced by the surface of the medium OTR influenced by the medium