采用扫描电镜、激光粒度分析仪、快速黏度分析仪和X-射线衍射仪分析了甘薯淀粉中加入不同比例玉米淀粉后的性质变化。结果表明:甘薯淀粉中玉米淀粉的加入量与平均粒径、峰黏度和5.6°峰面积存在极显著相关。根据所得的回归方程可以快速测定甘薯淀粉中玉米淀粉含量。

The properties of sweet potato starch adulterated with maize starch were analyzed by scanning electronic microscope,laser particle analyzer,rapid visco-analyzer,and X-ray diffractometer.The results showed that the content of maize starch in sweet potato starch was significantly correlated to average diameter,peak viscosity,and peak area at 5.6°.The maize starch content in sweet potato starch can be rapidly predicted according to the regression equation.