分别采用热风烘烤-微波联用法和冷冻干燥-微波联用法去除核桃仁皮,比较脱皮率和过氧化值,确定脱皮的最佳方法。运用Minitab15.0数据分析软件,采用三因素三水平的响应面法优化热风烘烤-微波联用法工艺条件,建立微波去皮的二次多项数学模型,并以脱皮率为响应值做响应面,得到热风烘烤-微波联用法去除核桃仁皮的优化工艺条件为:烘烤温度130℃,烘烤时间16 min,微波功率769 W,微波时间51 s,核桃仁脱皮率为98.01%,过氧化值为1.65 meq/kg。

The skin of Walnut kernel Was peeled by hot blast baking-microWave combination and freeze drying-microWave combination method respectively.Peeling rate and peroxide value Were compared,and the optimal tech-nique Was obtained.In order to optimize peeling conditions of freeze drying-microWave combination method,the method of response surface analysis With 3 factors and 3 levels combined With Minitab15.0-statistical data analysis softWare Was adpoted to built a quadratic regression equation With peeling yield as the response value,the response surface Was plotted.According to the above results,the optimum peeling conditiong Were obtained as folloWs: baking temperature 130℃,baking time 16min,microWave poWer769 W and microWave time 51 s.Under these conditions,the peeling rat is up to 98.01%,and the peroxide value is 1.65 meq/kg.