麦芽质量是影响麦汁过滤性能的重要因素,该研究采用小型模拟过滤设备,控制恒温恒压,对不同质量麦芽进行粉碎、糖化、过滤,评价一系列麦汁过滤性能参数及主要影响指标,麦汁过滤性能评价参数包括200m L过滤时间、总过滤量、滤饼重量、20 s过滤性能和总过滤性能,麦芽溶解度和黏度是麦汁总过滤性能的主要影响指标。同时采用贝克曼库尔特LS 13 320型激光衍射粒度分析仪、贝克曼Multisizer 3库尔特计数及颗粒分析仪两种设备对过滤前后的麦汁进行粒度分析,确定了麦汁过滤前、过滤后的粒径分布及粒径分布与麦汁过滤性能的关系。

Malt quality is one of the main factors influencing wort filtration performance. This research adopted the small simulation filtering equipment to conduct wort filtration of malt samples. Meanwhile,a series of wort filtration performance parameters including 200 m L filtration time,total filtration weight and filter cake weight,20 s filtration performance,total filtration performance,and main impact indicators including the solubility and viscosity of malt,had been evaluated in filtering test. Laser diffraction particle size analyzer( Beckman Coulter LS 13 320) and coulter counting and particle analyzer( Beckman Multisizer 3) had been used in granularity analysis of wort before and after filtering. The particle size distribution of wort before and after filtering had been determined.,The relation of particle size distribution and the performance of wort filtration was evaluated.