1. Influence of pH on butyrate uptake and solvent fermentation by a mutant strain of Clostridiumacetobutylicum

   • B. K. Soni
   • M. K. Jain

   Article Pages: 329 - 334

2. Process analysis and economic evaluation for Poly(3-hydroxybutyrate) production by fermentation

   • Jong-il Choi
   • Sang Yup Lee

   Article Pages: 335 - 342

3. Effect of light source on the microbiological desulfurization in a photobioreactor

   • B. W. Kim
   • K. P. Chang
   • H. N. Chang

   Article Pages: 343 - 348

4. Effect of serum concentration on retroviral vector production from the amphotropic ψCRIP murine producer cells

   • Jong Hyun Choi
   • Seung Chul Jun
   • Gyun Min Lee

   Article Pages: 349 - 353

5. Immobilization of urease using Amberlite MB-1

   • A. Anita
   • C. A. Sastry
   • M. A. Hashim

   Article Pages: 355 - 359

6. Studies on transfer processes in mixing vessels: effect of particles on gas-liquid mass transfer using modified Rushton turbine agitators

   • R. V. Roman
   • R. Z. Tudose

   Article Pages: 361 - 365

7. On the controllability of continuous fermentation processes

   • C. Kuhlmann
   • D. Bogle
   • Z. Chalabi

   Article Pages: 367 - 374

8. Kinetic study and mathematical modelling of killer and sensitive S. Cerevisiae strains growing in mixed culture

   • F. Ramon-Portugal
   • M. L. Délia-Dupuy
   • J. P. Riba

   Article Pages: 375 - 381

9. Ethanol production by Kluyveromyces marxianus IMB3 during growth on straw-supplemented whiskey distillery spent wash at 45 °C

   • N. Barron
   • H. Mulholland
   • A. P. McHale

   Article Pages: 383 - 386

10. Prickly pear cladodes and fruits as a potential raw material for the bioindustries

    • M. Hamdi

    Short communication Pages: 387 - 391