1. National Food Research Institute, 2-1-12 Kannondai, Tsukuba, Ibaraki 305-8642, Japan, Department of Applied Chemistry, Faculty of Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube 755-8611, Japan, and Research Institute of Advanced Science & Technology, Osaka Prefecture University, 1-2 Gakuen, Sakai 599-8570, Japan