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

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.