大豆分离蛋白-瓜尔胶生物材料混合体系疏水性的研究

以大豆分离蛋白为原料,添加瓜尔胶多糖,通过共混改性制备生物材料溶液,探讨了混合体系在不同pH、不同蛋白、盐和瓜尔胶浓度条件下表面疏水值的变化。结果表明:瓜尔胶多糖加入到单组分大豆分离蛋白体系后,会使体系表面疏水值降低;未加盐时pH=8.0条件下,体系可溶性蛋白的表面疏水值最大,加入盐后pH=10.0时混合体系表面疏水值明显大于纯水条件;且pH=10.0条件下,当盐浓度小于0.1mol/L时,体系表面疏水值随盐浓度的增大而增大,反之减小。此研究为大豆分离蛋白-瓜尔胶生物材料的成膜机理解释奠定了理论基础。

Study on hydrophobicity of biomaterial mixture from soy protein isolate-guar gum system

The changes of surface hydrophobicity of biomaterial mixture from soy protein isolate-guar gum under the different pH,protein,salt and guar gum concentrations was studied.The results showed:when guar gum was added into one-component soy protein isolate system,surface hydrophobicity value decreased.Soluble protein surface hydrophobicity value was the highest at pH lever of 8.0 without salt.If salt was added at pH lever of 10.0,the value was higher than that under the condition of pure water,the surface hydro...