TUDIES ON PRODUCTION OF POLY (4-HYDROXYBUTYRIC ACID) BY RECOMBINANT STRAIN OF ESCHERICfflA COLI / 微生物学通报
Microbiology
;
(12)1992.
Article
in Chinese
| WPRIM
| ID: wpr-582329
ABSTRACT
A recombinant E. coli XL1-Blue (pKSSE5.3) habouring PHA sythase gene (phaC) of Ralstonia eu-tropha H16 and 4-hydroxybutyric acid CoA transferase gene (orfZ) of Clostridium kluyveri was used to produce poly (4-hydroxybutyric acid), P (4HB), homopoiyester in M9 salts medium with glucose and 4-hydroxybutyric acid as carbon sources. Optimization of medium type and cultivation conditions and fed-batch culture were carried out. The results showed that the final cell dry weight, P (4HB) concentration and P (4HB) content were 13 g/L, 5g/L, and 36%, respectively in a 27L stirred and aerated fermentor after 68 hours of fed-batch culture. A large amount of P (4HB) was isolated by extraction of lyophilized cells with chloroform and make it possible to further examine the material properties and applications of P (4HB) homopoiyester from recombinant E. coli.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
Microbiology
Year:
1992
Type:
Article
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