Improvement of docosahexaenoic acid production on glycerol by Schizochytrium sp. S31 with constantly high oxygen transfer coefficient
| Autor: | Qinghang Wu, Nisi Gao, Ming Chang, Xingguo Wang, Guifang Chang, Guiwei Tian |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Glycerol
Environmental Engineering Docosahexaenoic Acids chemistry.chemical_element Bioengineering Schizochytrium Biology Oxygen chemistry.chemical_compound Bioreactors Food science Waste Management and Disposal Mass transfer coefficient Schizochytrium sp Renewable Energy Sustainability and the Environment General Medicine biology.organism_classification chemistry Biochemistry Docosahexaenoic acid Yield (chemistry) Fermentation Stramenopiles |
| Zdroj: | Bioresource Technology. 142:400-406 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2013.04.107 |
| Popis: | Volumetric mass transfer coefficient (kLa) is a key fermentation parameter for the production of docosahexaenoic acid (DHA) from glycerol by Schizochytrium sp. S31. In order to elucidate the effects of kLa on the fermentations, both baffled and unbaffled flask cultures and fed-batch cultures were developed in present work. The results showed that high kLa could effectively increase the DHA concentration, DHA productivity and conversion yield (Yx/s, g/g). When kLa was set at 1802 ± 105 h(-1) in the fed-batch culture, DHA concentration was achieved at 28.93 g/L, DHA productivity at 301 mg/L/h and Yx/s at 0.44 ± 0.02 g/g, all of which were significantly higher than those in the previous similar studies. |
| Databáze: | OpenAIRE |
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