PROBLEM TO BE SOLVED: To provide a production method of a processed product of sea tangle extract in which saltiness can be maintained or strengthened even if a part or all of common salt is substituted, and sodium ions are reduced.SOLUTION: A production method of a processed product of sea tangle extract which is a processing method of sea tangle extract in which sodium ions contained in sea tangle extract are removed from sea tangle extract by allowing at least a part of the sodium ions to pass through a cation-exchange membrane 5 by electrodialysis 1, sodium ions contained in the sea tangle extract are moved to a sodium recovery chamber 8 by allowing them to pass through the first cation-exchange membrane 5, and potassium ions contained in replenishment liquid 24 are replenished into a sea tangle extract housing chamber 9 by allowing them to pass through a second cation-exchange membrane 6.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】食塩の一部または全てを代替えしても、塩味を維持または補強することができ、ナトリウムイオンを低減した昆布エキス加工品の製造方法の提供。【解決手段】昆布エキスに含まれるナトリムイオンの少なくとも一部を、電気透析1により、陽イオン交換膜5を通過させることで、昆布エキス内から除去する昆布エキスの加工方法であって、昆布エキスに含まれるナトリウムイオンをナトリウム回収室8へ、第1陽イオン交換膜5を通過させて移動させるとともに、補充液24に含まれるカリウムイオンを昆布エキス収容室9内へ、第2陽イオン交換膜6を通過させて補充することを特徴とする、昆布エキス加工品の製造方法。【選択図】図1
