【摘要】 以油莎豆为原料,采用浸泡工艺提取油莎豆淀粉,并对油莎豆淀粉的溶解度、膨胀度、透明度、沉降体积、老化值、冻融稳定性、蓝值、黏度、颗粒形貌等性质进行了研究,结果表明油莎豆淀粉具有典型的二段膨胀过程,属限制型膨胀淀粉。冻融稳定性和老化性优于玉米淀粉;蓝值显著高于马铃薯淀粉;沉降体积小,形成凝胶能力强;透明度、溶解度、膨胀度较低,淀粉起糊黏1度为75℃,在90℃时达到峰值黏度为1300mpa·s,油莎豆淀粉颗粒呈卵形或球形,表面光滑,粒径范围2～15μm。更多还原

【Abstract】 In this study,Cyperus esculeutus as raw material,using soaking process extract Cyperus starch,and the solubility,expansion,transparency,sedimentation volume,aging value,freeze-thaw stability,blue value,viscosity,particle morphology and other properties of Cyperus starch were studied. Results showed that the Cyperus starch has typical secondary expansion process,belong to limited expansion starch. The freeze-thaw stability and aging value was better than corn starch;blue value was significantly higher than that of potato starch;sedimentation volume was small,gel formation ability was strong;transparency,solubility and swelling were low,and the starch pasting viscosity was 75 ℃,at 90 ℃,the peak viscosity was1300 mpa·s. Cyperus starch granules were oval or spherical,smooth surface,particle size range of 2～15 μm.更多还原