the 15 subjects received the test food (5.2g of C-COP) at breakfast every day for 4 weeks.They visited the doctor and were measured for blood pressure 3 times on each arm or the first day of the study,and at 2 and 4 weeks after the start. They were instructed to live as usual during the study period and not to change their diet or exercise intensity.Blood samples were collected on the first day of the study and at 4 weeks for biochemical examination (SRL,ToKyo)