Title:
FREEZE-DRYING METHOD
Document Type and Number:
Japanese Patent JP2009023934
Kind Code:
A
Abstract:
To provide a freeze-drying method by which a useful material is not denaturated during freeze-drying, and biological activity is not reduced in the preservation period.
The freeze-drying method for an useful material comprises carrying out the freeze-drying in the presence of a salt (A) of arginine with an organic acid (a) during the process to purify the useful material.
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Inventors:
YAMAGUCHI SHUNICHIRO
Application Number:
JP2007187732A
Publication Date:
February 05, 2009
Filing Date:
July 19, 2007
Export Citation:
Assignee:
SANYO CHEMICAL IND LTD
International Classes:
A01N1/02; C12N9/00
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