蝙蝠蛾拟青霉发酵全液喷雾干燥工艺优化研究

Process optimization of spray drying of fermented mesh from Paecilomyces hepiali

本研究以蝙蝠蛾拟青霉发酵全液为原料,以喷雾干粉的综合品质和出粉速率为筛选指标,通过单因素实验比较了发酵液全液总固形物含量、进料速率、进风温度和通风量对喷雾干燥效果的影响。进一步通过正交实验优化得到了蝙蝠蛾拟青霉发酵全液喷雾干燥的最佳工艺参数为:发酵全液总固形物含量38.72 g/L,进料速度600 m L/h,进风温度180℃,进风量30 m^3/h,此时蝙蝠蛾拟青霉发酵全液喷雾干燥出粉速率达到17.89 g/h,出粉率为76.3%,所得喷雾干粉为粉末状,淡黄色,气味香甜,无结块,分散性能良好。

The aim of this study was to develop a reliable spray drying technology of preparing for high-value dried power based on the raw materials of fermented mesh of P.hepiali.The method of spray drying was employed to study the effect of total solid content of fermented mesh, feed flow, inlet air temperature, ventilation rate on spray drying by single factor test with standards of the overall quality and the output rate of dried power. The optimal preparation parameters was obtained by othogonal experiment,were total solid content 38.72 g/L, feed flow 600 mL/h, inlet air temperature 180 ℃, ventilation rate 30 m3/h. On this condition,the spay drying rate of powder collecting was 17.89 g/h,the dried power yield was 76.3% .In addition, the high quality dried powder with the state of primrose yellow, sweet smelling, no lumps and good dispersion performance was obtained.