沉淀物与碘液反应呈淡紫红色，波长扫描最大光吸收值在480～520nm范围，表明二次沉淀物主要是由糊精组成。
The mixture of sediment reacted with KI-I_2 solution was red-lavender and its largest absorbance wavelength was in the range from 480 to 520 nm . The results showed that the sediments were mainly composed of dextrins .
波长最大值