响应面法优化冻干河套蜜瓜工艺的研究

Process optimization on freeze drying of Hetao muskmelons by response surface method

摘要: 本文以河套蜜瓜为原料,采用响应面(RSM)的实验设计方法对蜜瓜进行干燥工艺研究。以干燥速率作为影响冻干河套蜜瓜品质的指标,在单因素实验基础上,利用响应面优选出一组真空冷冻干燥河套蜜瓜的最佳工艺参数。结果表明,真空冷冻干燥河套蜜瓜的最佳工艺参数为:物料装载量100 g、升华温度为42℃、解析温度为61℃。在此条件下真空冷冻干燥速率为9.23%/h,与理论预测值较接近。说明通过响应面优化后得出的回归方程具有一定的实践指导意义。

Abstract: The response surface( RSM) method was used to study the drying process of Hetao muskmelons in this research.The drying rate was regarded as the influenced index.The optimum process parameters of vacuum freeze drying were chose by the RSM method and the single factor experiment. The results showed that the optimal process parameters of vacuum freeze drying Hetao muskmelons were 100 g material loading,42 ℃ sublimation temperature and 61 ℃ nanalysis temperature.The vacuum freeze drying rate was 9.23% / h in this condition,which was close to the theoretical prediction value. The conclusion could be drawn that the regression equation of this experiment had a certain practical guiding significance.