1. School of Bioresources and Technology; King Mongkut's University of Technology Thonburi; 49 Soi Thian Thale 25, Bang KhunThian Chai Thale Rd., Tha Kham, Bang KhunThian Bangkok 10150 Thailand
2. Division of Applied Biological Science; Faculty of Applied Biological Science, Gifu Univ.; 1-1 Yanagido Gifu 501-1193 Japan