EP 1032699 A1 20000906 - HIGH MOLECULAR WEIGHT GAMMA-POLY(GLUTAMIC ACID)
Title (en)
HIGH MOLECULAR WEIGHT GAMMA-POLY(GLUTAMIC ACID)
Title (de)
GAMMA-POLY(GLUTAMINSÄURE) MIT HOHEM MOLEKULARGEWICHT
Title (fr)
ACIDE GAMMA-POLYGLUTAMIQUE (GAMMA-PGA) A MASSE MOLECULAIRE ELEVEE
Publication
Application
Priority
- US 9824580 W 19981118
- US 6694297 P 19971118
Abstract (en)
[origin: WO9925864A2] High molecular weight gamma -PGA is provided. The gamma -PGA is separated from cells of the gamma -PGA producing cell culture after first adjusting the pH of the cell-culture to a pH of less than about 3. Also, the viscosity of a gamma -PGA solution is increased by removing metal ions with a chelator. In addition, gamma -PGA is fractionated directly from a cell culture, such that the fractionated gamma -PGA has low polydispersity. Purified gamma -PGA is produced having a molecular weight of at least 2.5 x 10<6>.
IPC 1-7
IPC 8 full level
C12P 21/02 (2006.01)
CPC (source: EP)
C12P 21/02 (2013.01)
Citation (search report)
See references of WO 9925864A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9925864 A2 19990527; WO 9925864 A3 19991223; CA 2310631 A1 19990527; EP 1032699 A1 20000906
DOCDB simple family (application)
US 9824580 W 19981118; CA 2310631 A 19981118; EP 98960252 A 19981118