<;P>;PROBLEM TO BE SOLVED: To provide a highly effective composition for removing abnormal proteins and to provide compositions, agents and foods contributing to prophylaxis and treatment, etc., of diseases caused by abnormal protein decomposition. <;P>;SOLUTION: The highly effective composition for removing abnormal proteins includes a soybean saponin group B as a main component. <;P>;COPYRIGHT: (C)2010,JPO&INPIT