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Title:
MANUFACTURING METHOD OF HYALURONIC ACID AND ITS SALT
Document Type and Number:
Japanese Patent JP2009242522
Kind Code:
A
Abstract:

To manufacture a high purity hyaluronic acid and its salt by a simple method.

A manufacturing method of the high purity hyaluronic acid and its salt includes a purification step of performing an activated carbon adding operation for adding activated carbon into an aqueous liquid containing the hyaluronic acid and the like, a synthetic adsorbent adding operation for adding a (meth)acrylate based synthetic adsorbent and a filtering operation. In the purification step, activated carbon treatment by which a filtering operation is performed to the aqueous liquid containing the hyaluronic acid or its salt after the activated carbon adding operation and synthetic adsorbent treatment by which a filtering operation is performed to the filtrate obtained by the activated carbon treatment after the synthetic adsorbent adding operation are preferably performed in this order.


Inventors:
MORIKAWA MITSUO
NINOMIYA HIROFUMI
SAWADA HIROAKI
TATSUNO KOICHIRO
Application Number:
JP2008089446A
Publication Date:
October 22, 2009
Filing Date:
March 31, 2008
Export Citation:
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Assignee:
MITSUBISHI RAYON CO
International Classes:
C08B37/08
Domestic Patent References:
JPS63270701A1988-11-08
JPS5971301A1984-04-23
JPS5968301A1984-04-18
JP2001072700A2001-03-21
JP2000288388A2000-10-17
JPH04158796A1992-06-01
JPS60232243A1985-11-18
JPS63270701A1988-11-08
JPS5971301A1984-04-23
JPS5968301A1984-04-18
JP2001072700A2001-03-21
JP2000288388A2000-10-17
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Takashi Watanabe
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama



 
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