Does growing Nannochloropsis sp. in innovative flat plate photobioreactors result in changes to fatty acid and protein composition
作者： Emeka G Nwoba , David A Parlevliet , Damian W Laird , Kamal Alameh , Navid R Moheimani
DOI: 10.1007/S10811-020-02227-9
关键词:
摘要: Solar cultivation of microalgae in photobioreactors is a valuable bioprocess for the sustainable production commercially useful metabolites. However, conventional culture temperature control method solar closed evaporative cooling neither economical nor sustainable. In this study, novel spectrally selective, insulated glazed flat plate (IGP) photobioreactor employing an infrared reflecting system embedded illumination surface was used Nannochloropsis sp. The impact technology on protein, lipid, carbohydrate content and fatty acid profile investigated compared to using passive (PEC) film (IRF) as well open raceway pond (ORP). Among all systems tested, biochemical composition biomass (mg g−1 organic biomass) showed general trend lipid > protein > carbohydrate, with no large variation each across treatments. areal volumetric productivities these constituents were significantly higher than ORP; results consistent productivity data. Of major saturated monounsaturated acids present, only proportion C16:0, which 24% ORP, changed among systems. highest high-value dietary acids, eicosapentaenoic (EPA, C20:5n-3; 15.5%) ϒ-linolenic (C18:3n-6; 8%) found ORP but similar that produced IGP (15.9 3.4%, respectively). photobioreactors, had least diel changes EPA 21% PEC. Photobioreactors constructed selective materials effectively allow management internal reactor significant negative profiles microalgae.
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