白果粉加工工艺优化

Optimization of the process for the Ginkgo biloba powder

利用响应面分析法研究进口温度、料液浓度、风机频率对白果粉喷雾干燥效果的影响。在单因素实验的基础上,选取进料量为300 mL/h,采用Box-Benhnken实验,以进口温度、料液浓度、风机频率为影响因素,以含水量和得率为响应值建立二次回归方程。结果表明,喷雾干燥的含水量最优工艺参数:进口温度170℃、风机频率50 Hz、料液浓度8%,在此条件下得到白果粉含水量4.38%;白果粉得率最佳工艺条件中为进口温度170℃,风机频率50 Hz,料液浓度6%,得到白果粉得率为55.88%。。

The influence of inlet temperature,liquid concentration, fan frequency on spray drying of the Ginkgo powder with the response surface methodology was studied.On the basis of single factor experiment, the feed rate of 300 mL/h was determined, inlet temperature,liquid concentration and fan frequency were optimized by Box-Benhnken test and the yield of the Ginkgo powder was used as the response value.It was showed that the optimal process parameters of spray drying of water content was inlet temperature of 170 %, fan fi＇equency of 50 Hz and feed concentration of 8% , the water content was 4.38% in this condition;the optimal process paramaters of the Ginkgo powder was inlet temperature of 170 ℃ ,for frequency of 50 Hz and feed concentration of 6% ,then the yield of Ginkgo powder was 55.88%.