[1] Natl Inst Hlth & Nutr, Dept Food Funct & Labeling, Shinjuku Ku, Tokyo 162, Japan
[2] Natl Agr & Food Res Org, Kyushu Okinawa Agr Res Ctr, Kumamoto, Japan
[3] Natl Agr & Food Res Org, Natl Food Res Inst, Tsukuba, Ibaraki, Japan
[4] Taiyo Kagaku Co Ltd, Yokaichi, Mie, Japan
[5] Natl Inst Hlth & Nutr, Dept Nutr Epidemiol, Shinjuku Ku, Tokyo 162, Japan
[6] Fujioil Co Ltd, Minato Ku, Tokyo, Japan