Production of fatty acids by engineered Ogataea polymorpha / 生物工程学报
Chinese Journal of Biotechnology
;
(12): 760-771, 2022.
Artigo
em Chinês
| WPRIM
| ID: wpr-927742
ABSTRACT
Fatty acids (FA) are widely used as feed stocks for the production of cosmetics, personal hygiene products, lubricants and biofuels. Ogataea polymorpha is considered as an ideal chassis for bio-manufacturing, due to its outstanding characteristics such as methylotroph, thermal-tolerance and wide substrate spectrum. In this study, we harnessed O. polymorpha for overproduction of fatty acids by engineering its fatty acid metabolism and optimizing the fermentation process. The engineered strain produced 1.86 g/L FAs under the optimized shake-flask conditions (37℃, pH 6.4, a C/N ratio of 120 and an OD600 of seed culture of 6-8). The fed-batch fermentation process was further optimized by using a dissolved oxygen (DO) control strategy. The C/N ratio of initial medium was 17.5, and the glucose medium with a C/N ratio of 120 was fed when the DO was higher than 30%. This operation resulted in a titer of 18.0 g/L FA, indicating the potential of using O. polymorpha as an efficient cell factory for the production of FA.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Meios de Cultura
/
Saccharomycetales
/
Ácidos Graxos
/
Fermentação
/
Engenharia Metabólica
Idioma:
Chinês
Revista:
Chinese Journal of Biotechnology
Ano de publicação:
2022
Tipo de documento:
Artigo
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