1. Department of Materials and Life Science, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto-City, Kumamoto 860-8555, Japan
2. Department of Bioengineering, Yatsushiro National College of Technology, 2627 Hirayama-shinmachi, Yatsushiro, Kumamoto 866-8501, Japan
3. Department of Applied Chemistry and Biochemistry, Faculty of Engineering, Kumamoto University, 2-39-1 Kurokami, Kumamoto-City, Kumamoto 860-8555, Japan