1. Department of Bioscience and Textile Technology; Interdisciplinary Graduate School of Science and Technology; Shinshu University; 3-15-1 Tokida, Ueda Nagano 386-8567 Japan
2. Faculty of Textile Science and Technology; Shinshu University; 3-15-1 Tokida Ueda Nagano 386-8567 Japan
3. Research Center; Toyobo Co., Ltd.; 2-1-1 Katata Otsu, Shiga 520-0292 Japan