Abstract:Single-factor experiments and an orthogonal experiment were designed to obtain the optimum technological parameters.An effort was made to obtain the advantages of MWSB drying compared to samples hot-air dried,SB dried,vacuum-freeze dried and vacuum-microwave dried.The quality of production was determined by measuring rehydration rate,chlorophyll content,colour difference,energy consumption and sensory evaluation.The results showed the optimum processing parameters were microwave power 300 W,hot air temperature 68~78 ℃,hot air speed 8m/s in the earlier stage(10 min) and microwave power 200 W,hot air temperature 68~78 ℃,hot air speed 6 m/s in the later stage(45 min).The production of MWSB drying has higher rehydration rate,chlorophyll content,colour difference and sensory evaluation.than that hot-air dried,SB dried and vacuum-microwave dried,but a little lower rehydration rate and chlorophyll content than that vacuum-freeze dried.There is a significant reduction in energy consumption by using MWSB drying.
