This invention includes the soybean albumin material, at the same time it is low with viscosity, it designated that the thick flow food of the physical properties which are satisfactory cohesion ones are little is obtained as topic. Below a) - d) by the fact that the soybean albumin material which had physical properties is used, you can obtain the thick flow food. a) in 100g, the soybean albumin material as solid amount, 5g and the calcium lactate as calcium, 30mg is included, the 121 of the aqueous solution which, in the 20 after the heating 10 minutes at the same time the viscosity below 10mPa s, 1,300 g of the same aqueous solution, the settling volume after the centrifugal 5 minutes 1 capacity % below, b) in 12 weight %, the 5 of the aqueous solution of the soybean albumin material the viscosity below 1,000mPa s, 0.22M TCA soluble ratio of c) soybean albumin material under 11%, d) PSI of the soybean albumin material (protein water soluble exponent: Protein Solubility Index) 70 or more. In addition, as for the said soybean albumin material, with pH5.7 - 7.4, at the 110 - the 160 can the aqueous solution or the water dispersed liquid of the soybean albumin raw materials obtain by the fact that it heats processes 15 - 70 seconds.本発明は、大豆たん白素材を含む、低粘度で且つ凝集物が少ない良好な物性の濃厚流動食を得ることを課題とした。以下a)~d)の物性を持った大豆たん白素材を用いることで、濃厚流動食が得られる。a)100g中に、大豆たん白素材を固形分として5g及び、乳酸カルシウムをカルシウムとして30mg含む水溶液の、121℃,10分間の加熱後の20℃における粘度が10mPa・s以下で且つ、同水溶液の1,300×g,5分間の遠心後の沈澱量が1容量%以下、b)大豆たん白素材の12重量%水溶液の、5℃における粘度が1,000mPa・s以下、c)大豆たん白素材の0.22M TCA可溶率が11%未満、d)大豆たん白素材のPSI(蛋白質水溶性指数:Protein Solubility Index)が70以上。また、該大豆たん白素材は、大豆たん白原料の水溶液または水分散液をpH5.7~7.4で、110℃~160℃にて15~70秒間加熱処理することで得ることが出来る。
