1. Mechanistic action of pediocin and nisin: recent progress and unresolved questions

   • T. J. Montville
   • Y. Chen

   MINI-REVIEW Pages: 511 - 519

2. Synthesis of biosurfactants in extreme conditions

   • S. S. Cameotra
   • R. S. Makkar

   MINI-REVIEW Pages: 520 - 529

3. Production and structure elucidation of di- and oligosaccharide lipids (biosurfactants) from Tsukamurella sp. nov.

   • E. Vollbrecht
   • R. Heckmann
   • S. Lang

   ORIGINAL PAPER Pages: 530 - 537

4. Limonene bioconversion to high concentrations of a single and stable product, perillic acid, by a solvent-resistant Pseudomonas putida strain

   • G. Speelmans
   • A. Bijlsma
   • G. Eggink

   ORIGINAL PAPER Pages: 538 - 544

5. Evaluation of cell recycling in continuous fermentation of enzymatic hydrolysates of spruce with Saccharomyces cerevisiae and on-line monitoring of glucose and ethanol

   • E. Palmqvist
   • M. Galbe
   • B. Hahn-Hägerdal

   ORIGINAL PAPER Pages: 545 - 551

6. d-Xylose isomerases from a newly isolated strain, Paenibacillus sp., and from Alcaligenes ruhlandii : isolation, characterization and immobilisation to solid supports

   • A. N. Moneke
   • S. K. C. Obi
   • H. Bisswanger

   ORIGINAL PAPER Pages: 552 - 557

7. Repression of the expression of genes encoding xylanolytic enzymes in Aspergillusoryzae by introduction of multiple copies of the xynF1 promoter

   • N. Kitamoto
   • S. Yoshino
   • N. Tsukagoshi

   ORIGINAL PAPER Pages: 558 - 563

8. Electroporation of, plasmid isolation from and plasmid conservation in Clostridium acetobutylicum DSM 792

   • S. Nakotte
   • S. Schaffer
   • P. Dürre

   SHORT CONTRIBUTION Pages: 564 - 567

9. Isolation and characterization of Enterobacter cloacae capable of metabolizing asparagine

   • M. S. Nawaz
   • D. Zhang
   • C. E. Cerniglia

   ORIGINAL PAPER Pages: 568 - 572

10. Bioconversion of sunflower oil, rapeseed oil and ricinoleic acid by Candida tropicalis M25

    • D. Fabritius
    • H.-J. Schäfer
    • A. Steinbüchel

    ORIGINAL PAPER Pages: 573 - 578

11. Carbon catabolite repression of invertase during batch cultivations of Saccharomyces cerevisiae: the role of glucose, fructose, and mannose

    • J. Dynesen
    • H. P. Smits
    • J. Nielsen

    ORIGINAL PAPER Pages: 579 - 582

12. The influence of carbon source on the level and composition of ceramides of the Candida lipolytica yeast

    • J. Rupčić
    • M. Mesarić
    • V. Marić

    ORIGINAL PAPER Pages: 583 - 588

13. The sequencing batch reactor as a powerful tool for the study of slowly growing anaerobic ammonium-oxidizing microorganisms

    • M. Strous
    • J. J. Heijnen
    • M. S. M. Jetten

    ORIGINAL PAPER Pages: 589 - 596

14. Determination of erythema-effective solar radiation in Japan and Germany with a spore monolayer film optimized for the detection of UVB and UVA – results of a field campaign

    • Y. Furusawa
    • L. E. Quintern
    • M. Saito

    ORIGINAL PAPER Pages: 597 - 603

15. Production of polyhydroxybutyrate by Ralstonia eutropha from protein hydrolysates

    • E. J. Bormann
    • M. Leißner
    • K. Metzner

    SHORT CONTRIBUTION Pages: 604 - 607

16. The production of xylitol from d-xylose by fermentation with Hansenula polymorpha

    • S. Sánchez
    • V. Bravo
    • F. Camacho

    SHORT CONTRIBUTION Pages: 608 - 611

17. Organic halogen removal from chlorinated humic ground water and lake water by nitrifying fluidized-bed biomass characterised by electron microscopy and molecular methods

    • E. Kostyál
    • M. Borsányi
    • M. S. Salkinoja-Salonen

    ORIGINAL PAPER Pages: 612 - 622

18. Effects of Triton X-100 and Quillaya Saponin on the ex situ bioremediation of a chronically polychlorobiphenyl-contaminated soil

    • F. Fava
    • D. Di Gioia

    ORIGINAL PAPER Pages: 623 - 630