1. Faculty of Natural Resources, Department of Pulp and Paper Technology, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
2. Faculty of New Technologies Engineering, Department of Cellulose and Paper Technology, Shahid Beheshti University, Tehran, Iran
3. Center of Research and Development of Cellulosic Products, Kimia Choob Golestan Inc. Company, Gorgan, Iran
4. Environmental Health Research Center, Golstan University of Medical Sciences, Gorgan, Iran
5. Department of Food Science and Technology, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran, Tel. ; Fax: