Affiliation: | 1. Department of Agricultural Chemistry, Faculty of Agriculture, Shinshu University, 8304 Minamiminowamura, Nagano 99–45, Japan;2. Department of Agricultural Chemistry, College of Agriculture, University of Osaka Prefecture, Sakai, Osaka 591, Japan;3. Department of Biological Chemistry, Faculty of Science, Okayama University of Science, Ridai-cho, Okayama 700, Japan |