Since 1989, he has been working on immobilisation, co-immobilisation, encapsulation and bioreactor system design in the fields of food production and fermentation processes. He is an author of around 200 articles published in journals, books and proceedings. He has also served as co-editor of two important books on cell immobilisation: Fundamentals of Cell Immobilisation Biotechnology (Kluwer Academic Publisher, 2004) and Applications of Cell Immobilisation Biotechnology (Springer, 2005).