1. Modelling of the chromatographic separation of xylose-mannose in ion-exchange resin columns

   • A. M. Wilhelm
   • G. Casamatta
   • A. Gaset

   Originals Pages: 147 - 151

2. Optimum design for a series of continuous stirred tank reactors containing immobilized biocatalyst beads obeying intrinsic Michaelis-Menten kinetics

   • C. D. de Gooijer
   • H. J. H. Hens
   • J. Tramper

   Originals Pages: 153 - 158

3. Immobilization of penicillin acylase on acrylic carriers

   • J. Bryjak
   • A. Trochimczuk
   • A. Noworyta

   Originals Pages: 159 - 162

4. Scale-up of hydrophobic interaction chromatography for purification of antitumor antibiotic SN-07

   • S. Ishida
   • J. Saeki
   • S. Katoh

   Originals Pages: 163 - 167

5. Recovery of 6-α-methylprednisolone from biotransformation medium by tangential flow filtration

   • M. Mateus
   • J. M. S. Cabral

   Originals Pages: 169 - 174

6. Phenol degradation in a three-phase biofilm fluidized sand bed reactor

   • M. Etzensperger
   • S. Thoma
   • I. J. Dunn

   Originals Pages: 175 - 181

7. An experimental study of acid production rate controlled operations of a continuous fermentor

   • P. Agrawal

   Originals Pages: 183 - 190

8. Product reports from Japan

   Report Pages: 191 - 191

9. Announcements

   Announcement Pages: 192 - 192