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    • 3. 发明授权
    • Upflow ion exchange treatment of natural edible juices containing high
acidity and suspended solids
    • 含有高酸度和悬浮固体的天然食用果汁的上升离子交换处理
    • US4522836A
    • 1985-06-11
    • US496346
    • 1983-05-19
    • Fred J. DechowDonald H. MitchellRichard M. PearceC. Byron SmithSand T. Brown
    • Fred J. DechowDonald H. MitchellRichard M. PearceC. Byron SmithSand T. Brown
    • A23L2/78A23L2/36
    • A23L2/78
    • A naturally acidic, edible fruit or vegetable juice containing a significant concentration of suspended matter, such as pulp, is effectively subjected to ion exchange without substantial loss in pulp content by passing the juice through a supported laterally confined particulate bed of a weak base anionic resin in an upwardly flowing direction through the bed at a liquid velocity which is sufficient to cause the bed to undergo a vertical expansion of at least about 20-25% by volume and preferably 50% but not so great as to cause significant entrainment of resin particles in the treated juice. The volume of the resin relative to the throughput of juice is large enough to extract a substantial amount of the natural acidity of the juice. Preferably, the juice is passed through the bed at a rate sufficient to impart to the expanded bed a slowing rolling motion at least in the region adjacent its upper surface. The acid content of the treated product is much reduced from the original value while the sweetness thereof undergoes little or no impairment so as to produce ratios of Brix numbers to acid content of at least about 30 and generally 50 or higher. The treated product can be blended with an untreated juice to obtain a marketable blend having values within commercial limits.
    • 含有显着浓度的悬浮物质如纸浆的天然酸性,可食用的水果或蔬菜汁通过将果汁通过弱碱性阴离子树脂的支撑的侧向约束颗粒床而被有效地进行离子交换而不会显着损失纸浆含量 在向上流动的方向通过床以液体速度,其足以使床经历至少约20-25体积%,优选50%但不太大的垂直膨胀,以引起树脂颗粒的显着夹带 处理过的果汁。 树脂相对于果汁的产量的体积足够大以提取大量的果汁的天然酸度。 优选地,汁液以足以赋予膨胀床的速度通过床,至少在邻近其上表面的区域中减缓滚动运动。 处理产物的酸含量从原始值大大降低,而其甜度几乎没有受损或没有损害,从而产生白利糖度数与酸含量之比至少约为30,通常为50或更高。 经处理的产品可以与未处理的果汁混合以获得具有商业界限值的市售混合物。