1. Department of Unit Operations and Food Processing, Institute of Food Industry College, University of Horticulture and Food Industry, P.O. Box 433, H-6701 Szeged, Hungary
2. CSIS Instituto de Fermentaciones Industriales, C. Juan de la Cierva 3, 28006 Madrid, Spain
3. Department of Food Chemistry, Institute of Food Industry College, University of Horticulture and Food Industry, P.O. Box 433, H-6701 Szeged, Hungary