1. Graduate School of Materials Science; Nara Institute of Science and Technology; 8916-5 Takayama Ikoma Nara 630-0192 Japan
2. Sanwa Starch Co., Ltd., 594 Unate; Kashihara Nara 634-8585 Japan
3. Department of Chemical and Biological Engineering; Ube National College of Technology; Tokiwadai Ube Yamaguchi 755-8555 Japan