1. Department of Pharmaceutical Engineering, Faculty of Engineering Toyama Prefectural University 5180 Kurokawa Imizu Toyama 939‐0398 Japan
2. Biotechnology Research Center Toyama Prefectural University 5180 Kurokawa Imizu Toyama 939‐0398 Japan
3. Graduate School of Advanced Science and Engineering Hiroshima University 1‐4‐1 Kagamiyama Higashi‐Hiroshima Hiroshima 739‐8527 Japan