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Title:
PURIFICATION OF NON-PROTEIN NITROGEN COMPONENT AND PURIFIED MATERIAL
Document Type and Number:
Japanese Patent JP3276465
Kind Code:
B2
Abstract:

PURPOSE: To provide the subject purification method capable of efficiently producing highly purified non-protein nitrogen components (NPN) in a short time.
CONSTITUTION: An NPN-containing raw material is subjected to electrodialysis desalting treatment using an ion-exchange membrane exhibiting a low NPN- blocking ratio to obtain a desalted NPN mother liquor and a concentrated recovery salt solution (A). The resultant desalted NPN mother liquor is treated with an ion-exchange resin so as to adsorb NPN on the resin. The adsorbed NPN is then eluted and an NPN fraction (B) is obtained. After (A) and (B) are mixed and neutralized, an electrodialysis desalting treatment is applied thereto by using an ion-exchange membrane exhibiting a high NPN-blocking ratio. Thus, the objective NPN is purified.


Inventors:
Hideo Otomo
Kenichi Kakimoto
Koji Takano
Toshihiro Ohtsu
Yu Kuwata
Application Number:
JP16834293A
Publication Date:
April 22, 2002
Filing Date:
June 16, 1993
Export Citation:
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Assignee:
Meiji Dairy Co., Ltd.
International Classes:
A23C9/142; A23C9/144; A23C9/146; A23C21/00; A23L1/305; (IPC1-7): A23C9/144; A23C9/142; A23C9/146; A23C21/00; A23L1/305
Domestic Patent References:
JP4356159A
JP6054637A
JP59184197A
Attorney, Agent or Firm:
Chikao Toda