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引用次数: 2
摘要
喷雾干燥被广泛用于从液体浓缩物中生产粉末。通常需要较低的输入温度,因为许多材料,如蛋白质,对热很敏感。然而,这种需求导致精矿粘度增加。常用的压力旋流雾化器在最大可加工粘度方面受到限制。在这项研究中,所谓的空气-核心-液体-环雾化器被用于乳清蛋白浓缩物(WPC80)的中试规模喷雾干燥,温度为40°C,因此粘度为0.09 Pa s。生产的粉末与工业生产的参考进行了比较。因此,颗粒大小分布和颗粒形态没有明显差异。关键词:喷雾干燥,雾化,ACLR,高粘性饲料,乳清浓缩蛋白。
Spray drying of high viscous food concentrates: Investigations on the applicability of an Air-Core-Liquid-Ring (ACLR) nozzle for liquid atomization.
Spray drying is widely used for powder production from liquid concentrates. Often low input temperatures are desired, as many materials, like proteins, are sensitive to heat. However, this demand leads to increased concentrate viscosities. Commonly used pressure swirl atomizers are limited concerning maximum processible viscosity. In this study, a so called Air-Core-Liquid-Ring Atomizer is used for pilot scale spray drying of whey protein concentrate (WPC80) at 40 °C and hence a viscosity of 0.09 Pa s. The produced powder was compared to an industrially produced reference. As a result, no significant differences in particle size distribution and particle morphology were observed. Keywords: spray drying, atomization, ACLR, high viscous feeds, whey protein concentrate.