红枣粉喷雾干燥加工工艺优化

Optimization of the Process for the Jujube Powder by Spray Drying

摘要: 本研究通过向枣浆中加入大豆蛋白和果胶酶来优化红枣粉的喷雾干燥加工工艺,在单因素实验的基础上,利用响应面分析法优化料液浓度、进风温度、雾化器转速,以红枣粉集粉率和水分含量为响应值,最终得出喷雾干燥红枣粉的最优工艺参数:进料浓度18%,雾化器转速440 r/s,进风温度170 ℃,在此条件下经验证实验所得红枣粉出粉率为57.81%±0.75%,含水量4.76%±0.08%。此方法提高了红枣粉集粉率,改善了红枣粉的品质,为红枣制粉深入研究提供参考。

Abstract: In this study, the process of spray drying of jujube powder was optimized by adding soybean protein and pectinase to jujube pulp. Based on the single-factor experiments, the response surface analysis was used to optimize the feed concentration, the inlet air temperature and the atomizer speed with the jujube powder collection rate and moisture content as the response value. The results showed that the optimum technological parameters of spray-dried jujube powder were as follows:Feed concentration 18%, atomizer speed 440 r/s, inlet air temperature 170℃, the yield of jujube powder was 57.81%±0.75%, moisture content was 4.76%±0.08%. This method increased the rate of jujube powder, improved the quality of jujube powder, which provided a reference for in-depth study of jujube powder.