1. Online First publication

   EDITORIAL Pages: 493 - 493

2. Potential commercial applications of microbial surfactants

   • I. M. Banat
   • R. S. Makkar
   • S. S. Cameotra

   MINI-REVIEW Pages: 495 - 508

3. Three biotechnical processes using Ashbya gossypii, Candida famata, or Bacillus subtilis compete with chemical riboflavin production

   • K. -P. Stahmann
   • J. L. Revuelta
   • H. Seulberger

   MINI-REVIEW Pages: 509 - 516

4. Response of the thermophile Thermus sp. RQ-1 to hyperbaric air in batch and fed-batch cultivation

   • I. Belo
   • R. Pinheiro
   • M. Mota

   ORIGINAL PAPER Pages: 517 - 524

5. Biosynthesis of citric acid by Yarrowia lipolytica repeat-batch culture on ethanol

   • T. E. Arzumanov
   • N. V. Shishkanova
   • T. V. Finogenova

   ORIGINAL PAPER Pages: 525 - 529

6. Optimization of culture medium for the continuous cultivation of the microalga Haematococcus pluvialis

   • J. Fábregas
   • A. Domínguez
   • A. Otero

   ORIGINAL PAPER Pages: 530 - 535

7. On-line monitoring of growth of Escherichia coli in batch cultures by bioluminescence

   • F. Marincs

   ORIGINAL PAPER Pages: 536 - 541

8. Suspended rice particles for cultivation of Monascus purpureus in a tower-type bioreactor

   • W.-T. Wu
   • P.-M. Wang
   • Y.-H. Chien

   SHORT CONTRIBUTION Pages: 542 - 544

9. Exploitation of butyrate kinase and phosphotransbutyrylase from Clostridium acetobutylicum for the in vitro biosynthesis of poly(hydroxyalkanoic acid)

   • S.-J. Liu
   • A. Steinbüchel

   ORIGINAL PAPER Pages: 545 - 552

10. A simple and rapid method to gain high amounts of manganese peroxidase with immobilized mycelium of the agaric white-rot fungus Clitocybula dusenii

    • D. Ziegenhagen
    • M. Hofrichter

    ORIGINAL PAPER Pages: 553 - 557

11. Development of DNA delivery system using Pseudomonas exotoxin A and a DNA binding region of human DNA topoisomerase I

    • T.-Y. Chen
    • C.-T. Hsu
    • J. Hwang

    ORIGINAL PAPER Pages: 558 - 567

12. Overexpression of the OLE1 gene enhances ethanol fermentation by Saccharomyces cerevisiae

    • S. Kajiwara
    • T. Aritomi
    • O. Kobayashi

    ORIGINAL PAPER Pages: 568 - 574

13. Proteolytic stability of recombinant human serum albumin secreted in the yeast Saccharomyces cerevisiae

    • H. A. Kang
    • E.-S. Choi
    • S. K. Rhee

    ORIGINAL PAPER Pages: 575 - 582

14. Genes encoding cytochrome P450 and monooxygenase enzymes define one end of the aflatoxin pathway gene cluster in Aspergillus parasiticus

    • J. Yu
    • P.-K. Chang
    • T. E. Cleveland

    ORIGINAL PAPER Pages: 583 - 590

15. Isolation of a Δ⁷-cholesterol desaturase from Tetrahymena thermophila

    • G. Valcarce
    • J. Florin-Christensen
    • C. Nudel

    ORIGINAL PAPER Pages: 591 - 595

16. Purification and characterization of isoamyl acetate-hydrolyzing esterase encoded by the IAH1 gene of Saccharomyces cerevisiae from a recombinant Escherichia coli

    • K. Fukuda
    • Y. Kiyokawa
    • A. Kimura

    ORIGINAL PAPER Pages: 596 - 600

17. Biotransformation of methyl ent-17-hydroxy-16β-kauran-19-oate by Rhizopus stolonifer

    • H. S. Vieira
    • J. A. Takahashi
    • M. A. D. Boaventura

    ORIGINAL PAPER Pages: 601 - 604

18. Molecular and physiological aspects of aflatoxin and sterigmatocystin biosynthesis by Aspergillus tamarii and A. ochraceoroseus

    • M. A. Klich
    • E. J. Mullaney
    • J. W. Cary

    ORIGINAL PAPER Pages: 605 - 609

19. Study on the production of 6-pentyl-α-pyrone using two methods of fermentation

    • A. Kalyani
    • S. G. Prapulla
    • N. G. Karanth

    SHORT CONTRIBUTION Pages: 610 - 612

20. Biochemical mediator demand – a novel rapid alternative for measuring biochemical oxygen demand

    • N. Pasco
    • K. Baronian
    • J. Hay

    ORIGINAL PAPER Pages: 613 - 618

21. Biological degradation of selected hydrocarbons in an old PAH/creosote contaminated soil from a gas work site

    • M. Eriksson
    • G. Dalhammar
    • A.-K. Borg-Karlson

    ORIGINAL PAPER Pages: 619 - 626

22. Erratum: Appl Microbiol Biotechnol (1999) 52:489–494

    Pages: 627 - 628