TREATMENT OF AQUEOUS EXTRACTANT FROM FISH MEAT

摘要

PURPOSE:To enhance permeation flux in comparison with the case for applying the other filtration system and to stabilize it by subjecting the aqueous extractant from fish meat to precision filtration treatment under the conditions of 35-80 deg.C liquid temp. and 4.0-6.0pH in a cross-flow system. CONSTITUTION:The aqueous extractant from fish meat is subjected to precision filtration treatment at 0.3-1.0kg/cm<2> pressure under the conditions of 35-80 deg.C and 4.0-6.0pH in a cross-flow system by using a membrane having 0.1-10mu pore diameter. As a precision filtration membrane, both a dip filter such as a circular dish type and a cartridge type and a membrane filter of a screen type are used. In the cross-flow system, the liquid to be treated flows along the surface of the membrane and filtrate flows to the direction rectangular to the flow of liquid to be treated and therefore part of deposits can be removed with liquid.