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Nannochloropsis gaditana grown outdoors in annular photobioreactors: operation strategies

2020Journal article Open access
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dc.contributor.authorNogueira, Natacha
dc.contributor.authorNascimento, Francisco J.A.
dc.contributor.authorCunha, César
dc.contributor.authorCordeiro, Nereida
dc.date.accessioned2021-04-15T20:24:09Z
dc.date.available2021-04-15T20:24:09Z
dc.date.issued2020
dc.description.abstractMicroalgae are a topic of intense research due to their potential applications in bio-based economy. However, sustainable commercial production is still overpriced due to high cultivation costs, harvesting and dewatering processes. In the present study, trials were conducted with the aim to improve daily operation strategies related to microalgae harvesting processes that did not compromise biomass productivity or the biochemical composition of the cultivated microalgae. Two experimental trials were performed in outdoor tubular annular photobioreactors to evaluate the effects of harvesting and medium dilution time (sunrise vs sunset) on Nannochloropsis gaditana biomass productivity, lipid and fatty acid content. Results showed that harvesting time had no significant effect on cell concentration and biomass productivity. Harvesting and medium dilution time did not affect lipid content. However, lipid content in samples collected at sunset was significantly higher than in samples collected at sunrise for both experimental treatments. The fatty acids profiles were mainly composed by polyunsaturated fatty acids, followed by mono-unsaturated fatty acids and saturated fatty acids. Regardless of medium dilution time, harvesting at sunset indicated that lipidic production (higher polyunsaturated fatty acids and lower saturated fatty acids) was favored without affecting the biomass productivity. The current study showed harvesting in the afternoon is a viable option for large production units that use semi-continuous strategy, without compromising biomass cell and lipid productivity.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationNogueira, N., Nascimento, F. J., Cunha, C., & Cordeiro, N. (2020). Nannochloropsis gaditana grown outdoors in annular photobioreactors: operation strategies. Algal Research, 48, 101913.pt_PT
dc.identifier.doi10.1016/j.algal.2020.101913pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/3297
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectNannochloropsis gaditanapt_PT
dc.subjectOutdoor productionpt_PT
dc.subjectHarvest and dilution timept_PT
dc.subjectLipid contentpt_PT
dc.subjectFatty acid profilept_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.titleNannochloropsis gaditana grown outdoors in annular photobioreactors: operation strategiespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage101913pt_PT
oaire.citation.titleAlgal Researchpt_PT
oaire.citation.volume48pt_PT
person.familyNameCunha
person.familyNamecordeiro
person.givenNameCésar
person.givenNamenereida
person.identifier1612636
person.identifier.ciencia-idEC12-B90B-BA98
person.identifier.ciencia-id521A-0F62-EA39
person.identifier.orcid0000-0003-3811-2932
person.identifier.orcid0000-0001-6006-3415
person.identifier.ridO-2253-2019
person.identifier.scopus-author-id7004319456
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication78f9a06c-3911-42c4-9899-45aafac82c73
relation.isAuthorOfPublication3d02b657-c48c-4f56-813a-1284b81960f3
relation.isAuthorOfPublication.latestForDiscovery78f9a06c-3911-42c4-9899-45aafac82c73

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