1. Department of Applied Chemistry, College of Engineering, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan Research Laboratory of Resources Utilization, Tokyo Institute of Technology, Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan Department of Applied Bioscience, Faculty of Engineering, Okayama University, Tsushima-naka, Okayama 700-0082, Japan