干燥温度对玉米湿法加工的影响

Effect of drying temperature on corn wet milling

用湿法提取玉米淀粉的实验室方法,对不同温度干燥后玉米的浸泡特性、淀粉得率及纯度进行了研究。结果表明,当干燥温度达到80℃以上时,水分的扩散系数增加11%,饱和水分下降12%;干燥温度达到80℃时,淀粉得率下降2%;温度达到90℃时,下降7%,同时淀粉中蛋白质的含量也增加。

A laboratory wet-milling process was used to determine steeping characteristic, starch yield and the purity of corn dried under different drying temperature, The result indicates that the diffusion coefficient for water increased by 11%; saturation moisture decreased by 12% when drying temperature arrived at 80℃; the starch yield decrease by 2% at drying temperature 80℃, starch yield decreased by 7% at drying temperature of 90℃ but the percentage of nrotein in starch increased.