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Type of information: TECHNICAL ARTICLES

In this section, you can access to the latest technical information related to the PISA project topic.

Eicosapentaenoic acid production from Nannochloropsis oceanica CY2 using deep sea water in outdoor plastic-bag type photobioreactors

In this study, Nannochloropsis oceanica CY2 was grown in deep-sea water (DSW)-based medium in 5-L plastic bag-type photobioreactors (PBRs) for the autotrophic production of Eicosapentaenoic acid (EPA, 20:5n-3). EPA production of N. oceanica CY2 was stimulated when it was grown in 100% DSW amended with 1.5?g?L?1 NaNO3, achieving a EPA content of 3.1% and a biomass concentration of 3.3?g?L?1. An outdoor-simulated microalgae cultivation system was also conducted to validate the feasibility of outdoor cultivation of the CY2 strain in plastic bag-type PBRs. Using an inoculum size of 0.6?g/L, the biomass concentration in the PBR culture was 3.5?g?L?1, while the EPA content and productivity reached a maximal level of 4.12% and 7.49?mg?L?1?d?1, respectively. When the PBRs were operated on semi-batch mode, the EPA productivity could further increase to 9.9?mg?L?1?d?1 with a stable EPA content of 4.1%.

» Author: Chun-Yen Chen, Dillirani Nagarajan, Wai Yan Cheah

» Reference: Bioresource Technology, Volume 253

» Publication Date: 01/04/2018

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