A new sampling means for on-line analysis of brewing mash

A new sampling means using a rotating filter-tube was investigated for analysis of brewing mash. This means prevented the adhesion of cake onto the filter, which led to an increase of filtration flux from the mashes with high filtration resistance. In a sake-mash, the filtration flux of the rotated filter was approximately 10-fold higher than that with no rotation. Continual measurement of alcohol and specific density of the filtrate was feasible throughout the entire mashing process with no washing. It was also feasible for sampling the mashes of soy sauce and shochu.