This invention the kidney symptom delay effect is high, you discovered the soybean albumin material for the kidney symptom patient, you designated that the food of the kidney symptom patient use which uses this is offered as topic. Obtaining the knowledge that inside the acid precipitation characteristic protein of the soybean, the cutoff soybean albumin which raises the purity of the acid precipitation characteristic protein other than the 7S globulin and the 11S globulin, namely in it is albumen decrease action in the urine which is strong the non 7S 11S acid precipitation characteristic soybean albumin , making this invention complete it reached the point of.本発明は腎症遅延効果の高い、腎症患者向けの大豆蛋白素材を見出し、これを使用した腎症患者用途の食品を提供することを課題とした。 大豆の酸沈殿性蛋白質のうち、7Sグロブリンや11Sグロブリン以外の酸沈殿性蛋白質の純度を高めた分画大豆蛋白、すなわち「非7S・11S-酸沈殿性大豆蛋白」に強い尿中アルブミン低下作用があるという知見を得て本発明を完成させるに到った。
