1. ; Department of Food Plant Chemistry and Processing, Faculty of Food Science; University of Warmia and Mazury; Olsztyn Poland
2. ; Department of Human Nutrition; St. Francis Xavier University; B2G 2W5 Antigonish Nova Scotia Canada
3. Byelorussian Horticulture Research Institute; Samochwałowicze Byelorussia
4. Lithuanian Institute of Horticulture; Babtai Lithuania