An auxin-like supermolecule to simultaneously enhance growth and cumulative eicosapentaenoic acid production in Phaeodactylum tricornutum. (February 2022)

• Record Type: Journal Article
• Authors: Wang, Zhenyao; Mou, Jinhua; Qin, Zihao; He, Yuhe; Sun, Zheng; Wang, Xiang; Lin, Carol Sze Ki
• Is Part Of: Bioresource technology. Volume 345(2022)
• Publication Date: 2022-02
• Subjects: Eicosapentaenoic acid -- Microalgal biomass -- Microalgal growth -- Phaeodactylum tricornutum -- Supermolecule; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2021.126564
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: An auxin-like supermolucule was synthesised in laboratory. Cell numbers of Phaeodactylum tricornutum were significantly improved. Biomass of P. tricornutum cells was remarkably enhanced. Eicosapentaenoic acid content of P. tricornutum was higher than similar reports. Abstract: Phaeodactylum tricornutum, a model alga, is well known for its ability to accumulate intracellular omega-3 eicosapentaenoic acid (EPA). However, P. tricornutum cells need to have a higher EPA content if they are to be used for industrial applications. In this study, an auxin-like supermolecule (SM) was synthesised and used for the cultivation of P. tricornutum . Results show that the addition of 1 ppm of SM significantly increased the P. tricornutum cell density and boosted the P. tricornutum biomass. The experimental group treated with 5 ppm of SM, had an EPA content of 31.7%, which was a 2.09-fold increase over the EPA content in the untreated group. Overall, our results demonstrated that SM can significantly improve the microalgal growth and EPA accumulation in P. tricornutum, providing a feasible strategy to achieve efficient and cost-effective EPA production.