1. Prof. Dr. Nobuhiro Mori, Laboratory of Microbial Biotechnology, Faculty of Agriculture, Tottori University, 680-8553 Tottori, Japan, E-mail; morinobu@muses.tottori-u.ac.jp

2. Prof. Dr. Jiro Arima, Laboratory Protein Chemistry, Department of Applied Resources Chemistry, Faculty of Agriculture, Tottori University, 680-8553 Tottori, Japan, E-mail; arima@muses.tottori-u.ac.jp

3. Prof. Dr. Elfadil E. Babiker, Department of Food Science and Technology, Faculty of Agriculture, University of Khartoum, Shambat, Sudan, E-mail; elfadilbabiker@yahoo.com

4. Prof. Dr. Elsiddig Ahmed Elmustafa Elsheikh, Department of Soil & Environment Sciences, Faculty of Agriculture, Shambat, Sudan, E-mail; shayatti@uofk.edu