Title:
ポリ−γ−グルタミン酸のリン酸誘導体及びその製造方法
Document Type and Number:
Japanese Patent JP6507426
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a γ-polyglutamic acid (γ-PGA) derivative of which water-retentivity and viscosity can be changed regardless of its molecular weight, and a production method thereof.SOLUTION: The invention provides γ-PGA derivatives having introduced phosphoric acid groups represented by Formula (1). Also provided is a method for producing phosphorylated γ-PGA comprising a culture step where a Bacillus microorganism having a γ-PGA producing ability is cultured in a liquid culture medium; a derivative forming step where a phosphoric acid or phosphate salt is added to the liquid culture medium for forming and accumulating phosphoric acid derivatives of γ-PGA; and a recovery step where the phosphoric acid derivative of γ-PGA is collected from the culture.SELECTED DRAWING: Figure 1
Inventors:
Tohru Saai
Osamu Kurita
Yasushi Koshian
Kaori Umeya
Yamaoka Chizuru
Osamu Kurita
Yasushi Koshian
Kaori Umeya
Yamaoka Chizuru
Application Number:
JP2016242415A
Publication Date:
May 08, 2019
Filing Date:
December 14, 2016
Export Citation:
Assignee:
Mie Prefecture
International Classes:
C12P7/44; C07K2/00; C12P13/14
Domestic Patent References:
| JP2002080593A | ||||
| JP2009191164A | ||||
| JP2009073861A |
Foreign References:
| CN105295037A |
Attorney, Agent or Firm:
Yohei Kobayashi