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

Marine Drugs

Sergi Abad²  Xavier Turon¹ 

[1] Bioengineering Department, IQS, Ramon Llull University, Via Augusta 390, Barcelona 08017, Spain

关键词: glycerol;    biodiesel;    DHA;    fatty acids;    PUFA;    omega-3 fatty acids;    microalgae;    bioprocess;    nutraceutics;   

DOI  :  10.3390/md13127064

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.