Biotechnological Production of Docosahexaenoic Acid Using Aurantiochytrium limacinum: Carbon Sources Comparison And Growth Characterization

Aurantiochytrium limacinum, a marine heterotrophic protist/microalga has shown interesting yields of docosahexaenoic acid (DHA) when cultured with different carbon sources: glucose, pure and crude glycerol. A complete study in a lab-scale fermenter allowed for the characterization and comparison of...

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Bibliographic Details
Published in:Marine drugs 2015-12, Vol.13 (12), p.7275-7284
Main Authors: Abad, Sergi, Turon, Xavier
Format: Article
Language:English
Subjects:
biodiesel
Biomass
bioprocess
Bioreactors
Biotechnology - methods
Carbon - chemistry
Carbon - metabolism
Culture Techniques
DHA
Docosahexaenoic Acids - biosynthesis
fatty acids
Glucose - chemistry
Glucose - metabolism
glycerol
Glycerol - chemistry
Glycerol - metabolism
microalgae
nutraceutics
omega-3 fatty acids
PUFA
Stramenopiles - metabolism
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Summary:Aurantiochytrium limacinum, a marine heterotrophic protist/microalga has shown interesting yields of docosahexaenoic acid (DHA) when cultured with different carbon sources: glucose, pure and crude glycerol. A complete study in a lab-scale fermenter allowed for the characterization and comparison of the growth kinetic parameters corresponding to each carbon source. Artificial Marine Medium (AMM) with glucose, pure and crude glycerol offered similar biomass yields. The net growth rates (0.10-0.12 h(-1)), biomass (0.7-0.8 g cells/g Substrate) and product (0.14-0.15 g DHA/g cells) yields, as well as DHA productivity were similar using the three carbon sources. Viable potential applications to valorize crude glycerol are envisioned to avoid an environmental problem due to the excess of byproduct.
ISSN:1660-3397
1660-3397
DOI:10.3390/md13127064