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本课题对甘薯熟化特性和干燥特性进行了探讨性研究,得到甘薯最佳熟化方法和熟化条件。对熟化甘薯的热风干燥特性和微波干燥特性进行了对比研究,并分别总结出熟化甘薯热风干燥数学模型和微波干燥数学模型,为甘薯干制品的产业化生产提供理论基础。根据实验结果:甘薯最佳熟化条件为:薯块大小为8×8×8mm,薯块与水比例为3∶5,熟化方法为热水漂烫,熟化时间4min。热风干燥最佳条件为:干燥温度75℃,熟化方法为热水漂烫,铺料密度为7.6kg/m2,干燥速率为0.3m/s~0.5m/s。熟化甘薯的干燥模型MR=e-rτN,r=e-4.60282+0.00696t1+1.57675v-0.32548ρ,N=0.72503+0.00483t1-0.09450v+0.03676ρ,F=1102.35(<0.001)。微波-热风联合干燥条件为:微波发射功率0.82~1.23W/g、缓苏时间30~45min、转换水分含量65~70%、热风温度72~78℃。数学模型为:qu=30.582989-24.545659Z1+0.1Z2-0.273994-0.298490Z4-0.387570Z1Z1+0.052828Z2Z1+0.000397Z2Z2+0.093048Z3Z1+0.000148Z3Z2+0.000669Z3Z3+0.271341Z4Z1-0.002251Z4Z2+0.002136Z4Z3+0.000759Z4Z4 sp=278.196172+25.324960Z1+1.011550Z2-1.536566Z3-6.362326Z4+40.572392Z1Z1-0.684381Z2Z1+0.002574Z2Z2+0.206773Z3Z1+0.000653Z3Z2+0.009752Z3Z3-0.941071Z4Z1-0.008279Z4Z2+0.003417Z4Z30.044456Z4Z4。exh=-422.036638+1.355181Z1+0.164606Z2+0.855330Z3+10.8918226Z4-17.029199Z1Z1-0.201820Z2Z1-0.001619Z2Z2-0.225942Z3Z1+0.000011995Z3Z2+0.000496Z3Z3+0.573228Z4Z1+0.000180Z4Z2-0.011833Z4Z3-0.069511Z4Z4。