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Biorefinery of marine macroalgae into high-tech bioproducts: a review

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Abstract

Pollution and climate change induced by fossil fuel usage are calling for the development of a circular bioeconomy based on carbon neutral resources such as marine macroalgae, also named seaweeds. Macroalgal biomass can generate biofuels and valuable bioproducts such as hydrocolloids and other unique biomolecules. Biorefinery of marine macroalgae involves a minimum use of energy and chemicals, and low waste generation, as demonstrated in recent laboratory-scale studies. Here, we review biorefinery of marine macroalgae with focus on non-energy bioproducts and advances in the separation of biomolecules. We found that metabolites with bioactive properties are in high demand for food, cosmetic, medicine and pharmaceutical industries. These metabolites can be obtained together with energy products to improve macroalgae valorization. Emerging extraction methods facilitate the generation of more qualitative bioproducts in higher yields with less energy.

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Funding

This study is part of the Ph.D. thesis carried out by the first author within the Laboratory of Bioresources (Med-Res) at “Gheorghe Asachi” Technical University of Iasi. Ph.D. scholarship was awarded by Romanian Government. This work was also partially financed by: Base Funding—UIDB/50,020/2020 of the Associate Laboratory LSRE-LCM—funded by national funds through FCT/MCTES (PIDDAC). S. Santos acknowledges postdoctoral scholarship (SFRH/BPD/117,387/2016), awarded by the Portuguese Science and Technology Foundation (FCT) and financed by National Funds and by the European Social Fund (ESF) through the Human Capital Operational Programme (POCH).

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Correspondence to Irina Volf.

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The authors have no conflict of interest to declare related to the content of this article.

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Filote, C., Santos, S.C.R., Popa, V.I. et al. Biorefinery of marine macroalgae into high-tech bioproducts: a review. Environ Chem Lett 19, 969–1000 (2021). https://doi.org/10.1007/s10311-020-01124-4

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  • DOI: https://doi.org/10.1007/s10311-020-01124-4

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