1. Sts. Cyril and Methodius University, Skopje, Institute of Animal Science, Dept. of Food Technology, 1000 Skopje, Republic of Macedonia.
2. Corresponding author. E-mail: mirjanam@unet.com.mk. Phone/fax: 389 (02) 362 358.
3. Research Institute in Agriculture, Center for Small Grains, 34 000 Kragujevac, FR Yugoslavia.
4. Sts. Cyril and Methodius University, Skopje, Institute for Crop and Vegetable, 1000 Skopje, Republic of Macedonia.