1. Dept. of Food Science, National Univ. of Fisheries, Shimonoseki 759-6595, Japan
2. Toyama National Inst. of Maritime Tech., Shin-minato, Toyama 933-0239, Japan
3. Dept. of Chemistry, Mie Univ., Tsu 514-0008, Japan
4. Koriyama Women s Univ., Koriyama 963-8503, Japan
5. ITE/IBA Research Inst., Ichinomiya 491-0806, Japan