PROBLEM TO BE SOLVED: To solve the problem of a method for removing solid matters including heavy metals by adding tannin or a food additive containing tannin to a fish sauce, wherein liberated heavy metals can not be removed because the target of removal is heavy metals bound with protein only, and problems of a method for removal by eluding heavy metals in an acid treatment solution, wherein the taste is changed and therefore, the sauce can not be used in the state as a seasoning because it is necessary to treat the heavy metals in the solution at a low pH of 3-3.5 to increase the efficiency in removing the heavy metals and protein in the fish sauce is solubilized and eluded when treated in the solution at such a low pH.SOLUTION: Heavy metals are removed from the fish sauce without affecting the oxidation-reduction potential of the fish sauce and without impairing useful components such as flavor components in the fish sauce by adding a food additive filtration auxiliary agent to the fish sauce, separating the solid and liquid, and feeding the fish sauce into a column filled with a heavy metal adsorbent.COPYRIGHT: (C)2012,JPO&INPIT【課題】魚醤油にタンニン又はタンニンを含む食品添加物を添加し、重金属を含む固形物を除去する方法は、タンパク質に結合した重金属のみを除去対象としており、遊離した重金属は除去できない。また、重金属を酸処理液中に溶出させる方法では、重金属類の除去効率を高めるためにpH3~3.5という低pHで処理することが必要となり、低pHで処理すると魚醤油中の蛋白質が可溶化して溶出し、味が変化するためそのまま調味料として使用できない。【解決手段】魚醤油に食品添加物のろ過助剤を添加、固液分離すること及び、重金属吸着剤を充填したカラムに魚醤油を通液させることで、魚醤油の酸化還元電位に影響されず、魚醤油のうまみ成分等の有用成分が損なわれることなく、魚醤油から重金属を除去する【選択図】 なし
