可溶性大豆多糖的提取工艺及其应用研究

THE EXTRACTION AND UTILIZATION OF SOLUBLE SOYBEAN POLYSACCHARIDE

豆渣是大豆加工中的主要副产物。本文主要阐述了从脱脂豆片提取蛋白质的豆渣中提取可溶性大豆多糖的工艺及其在乳和防米饭粘连上的应用效果。首先研究了可溶性大豆多糖的提取条件,通过正交实验,得到了其最佳提取条件:盐酸添加量2%(v/w);提取温度:120℃;提取时间:2h。在米饭和牛奶中的应用研究结果表明,可溶性大豆多糖能降低米饭的粘度,并且可以改善酸性条件下牛奶蛋白的稳定性。

Okara is the main byproduct of soybean processing. This paper mainly expounds the extracting process and utilization of soluble soybean polysaccharide （SSPS） from okara on milk and rice. And the okara was obtained from defatted soybean flake after the extraction of protein. Through the orthogonal experiment, the optimal extracting conditions of SSPS were obtained as follows： the addition amount of HCl was 2%（v/w）; extracting temperature was 120℃ the extracting duration was 2h . The experiments of applying the soluble soybean polysaccharide on the rice and milk indicate that it can reduce the viscosity of the cooked rice and improve the stability of milk protein under acidic conditions.