Please use this identifier to cite or link to this item: https://hdl.handle.net/1822/76432

TitleA comparison between microalgal autotrophic growth and metabolite accumulation with heterotrophic, mixotrophic and photoheterotrophic cultivation modes
Author(s)Abreu, Ana P.
Morais, Rui C.
Teixeira, J. A.
Nunes, João
KeywordsMicroalgae
Autotrophic
Mixotrophic
Heterotrophic
Photoheterotrophic
Organic carbon
Bioeconomy
Issue date22-Feb-2022
PublisherElsevier
JournalRenewable and Sustainable Energy Reviews
CitationAbreu, Ana P.; Morais, Rui C.; Teixeira, José A.; Nunes, João, A comparison between microalgal autotrophic growth and metabolite accumulation with heterotrophic, mixotrophic and photoheterotrophic cultivation modes. Renewable and Sustainable Energy Reviews, 159(112247), 2022
Abstract(s)Microalgae are sustainable feedstock for healthy food and feed, organic drugs, ecological polymers, green chemicals and dyes, biofuels, biofertilizers, and environmental bioremediation technologies. Despite its enormous promises, microalgae cultivation is expensive and thus large-scale production is centred on low volume/high value markets, such as the specialty food and feed, dietary supplements and pharmaceuticals. Large-scale microalgal cultivation is severely limited by the low biomass productivity achieved in current production systems, due to low photosynthetic efficiency. Furthermore, the management of carbon dioxide (CO2) for microalgal large-scale production is costly and faces technological constraints. The cultivation of microalgae in media supplemented with organic carbon substrates, with or without light, can significantly increase biomass productivities and overcome the technical constraints associated to CO2 supply. This review collects quantitative data to compare microalgal autotrophic growth and metabolite accumulation with heterotrophic, mixotrophic and photoheterotrophic cultivation modes. Critique hypotheses are proposed to explain the increase in biomass productivity once microalgae are supplied with organic carbon molecules. The main cultivation parameters that could affect biomass accumulation are also analysed. Supplementation of microalgae with organic carbon substrates could be a suitable strategy towards a microalgal economy, despite the constraints and challenges that have to be overcome and that are also analysed.
TypeArticle
URIhttps://hdl.handle.net/1822/76432
DOI10.1016/j.rser.2022.112247
ISSN1364-0321
Publisher versionhttps://doi.org/10.1016/j.rser.2022.112247
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

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