1. Department of Food Processing, Research Institute of Food Science and Technology (RIFST), P.O. Box 91735-147, Km 12, Asian Highway, Mashhad, Iran, Tel. ; Fax:
2. Food Machinery Design Department, Research Institute of Food Science and Technology (RIFST), P.O. Box 91735-147, Km 12, Asian Highway, Mashhad, Iran, Tel. ; Fax: