杏粉喷雾干燥工艺的研究

[目的]试验以浓缩杏浆为原料,经稀释、二次均质、喷雾干燥工序生产杏粉.[方法]采用单因素实验和正交实验研究进风温度、出风温度、雾化器转速、浆料可溶性固形物含量对杏粉的色泽、含水率、得率的影响.[结果]最终确定了杏粉最佳喷雾干燥工艺参数为:进风温度155℃,出风温度75℃,蠕动泵转速为29r/min,浆料可溶性固形物含量为11;时,所得杏粉的L值为69.35、b值为31.28、水分含量3.5;、集粉率56;.[结论]杏粉果香浓郁、色泽最佳.

Study of the Technology of Spray Drying for Apricot Powder

【Objective】In this study,concentrated apricot pulp was used as raw materials,and through dilution,the second homogenization treatment,apricot beverage powder was successfully produced by sprayed drying procedure.【Method】Single-factor experiment and orthogonal experiment were applied to study the effect of inlet and outlet temperatures,atomizer rotating speed,pulp soluble solids content on apricot powder color,moisture content,and the yield.【Result】 Ultimately the best apricot powder spray process parameters were determined: the inlet temperature should be at 155℃,the outlet temperature 75℃,peristaltic pump speed 29 r/min,pulp soluble solids content was 11%;the apricot power L value was 69.35;b value 31.28;moisture content was 3.5%;collection rate of the powder was 56%.【Conclusion】The product is fruity and the color is appealing.