Blue economy in the North: Scandinavian algal biotechnology to the rescue

Funk, Christiane; Jensen, Poul Erik; Skjermo, Jorunn

doi:10.1111/ppl.13534

Cited by 5 publications

(5 citation statements)

References 15 publications

(5 reference statements)

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“…The present work supports the possibility of using polar diatoms as an efficient cold and low light-adapted bioresource for xanthophyll pigments, especially usable in Nordic countries to develop new economics based on marine resources [ 21 , 23 ]. Beyond indoor growth, which would require further investigations to reduce energetic costs related to temperature regulation, the present work also highlights the possibility of growing polar diatoms outdoors during winter at temperate latitudes or part of the year (depending on the latitude) in northern areas.…”

Section: Discussionsupporting

confidence: 70%

“…Aside from a 10 times higher Fx content (mg g −1 ) [ 3 ], the main advantages of using diatoms is their higher growth rate, their ability to grow both outdoors and indoors under controlled conditions, and the ease with which they can be genetically manipulated, in particular for the genetic engineering of xanthophyll production [ 15 , 16 , 17 , 18 ]. While temperate strains of diatoms have been widely investigated, especially those easily growing model strains with a sequenced genome such as Phaeodactylum tricornutum [ 19 ], recent years showed a growing interest in using polar strains, which are better adapted to the growth conditions of Nordic countries [ 20 , 21 , 22 , 23 ]. Additionally, the adaptation of polar strains to their extreme environment, in particular to low temperatures and irradiances, has been accompanied by their cell enrichment in specific molecules and metabolites such as the xanthophylls and polyunsaturated fatty acids [ 24 ], conferring a unique biochemical diversity and a broad bioactivity [ 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

“…It is foreseen that these characteristics could satisfy, for instance, the outdoor environmental constraints for the production of valuable algal biomass in northern regions [ 20 , 21 , 22 , 28 , 29 , 30 ], as well as during winter at more temperate latitudes. Therefore, polar diatoms are being studied as an important cold and low light-adapted biotechnological resource, especially usable in Nordic countries, to develop new economics based on marine resources [ 21 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

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Potential for the Production of Carotenoids of Interest in the Polar Diatom Fragilariopsis cylindrus

et al. 2022

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Carotenoid xanthophyll pigments are receiving growing interest in various industrial fields due to their broad and diverse bioactive and health beneficial properties. Fucoxanthin (Fx) and the inter-convertible couple diadinoxanthin–diatoxanthin (Ddx+Dtx) are acknowledged as some of the most promising xanthophylls; they are mainly synthesized by diatoms (Bacillariophyta). While temperate strains of diatoms have been widely investigated, recent years showed a growing interest in using polar strains, which are better adapted to the natural growth conditions of Nordic countries. The aim of the present study was to explore the potential of the polar diatom Fragilariopsis cylindrus in producing Fx and Ddx+Dtx by means of the manipulation of the growth light climate (daylength, light intensity and spectrum) and temperature. We further compared its best capacity to the strongest xanthophyll production levels reported for temperate counterparts grown under comparable conditions. In our hands, the best growing conditions for F. cylindrus were a semi-continuous growth at 7 °C and under a 12 h light:12 h dark photoperiod of monochromatic blue light (445 nm) at a PUR of 11.7 μmol photons m−2 s−1. This allowed the highest Fx productivity of 43.80 µg L−1 day−1 and the highest Fx yield of 7.53 µg Wh−1, more than two times higher than under ‘white’ light. For Ddx+Dtx, the highest productivity (4.55 µg L−1 day−1) was reached under the same conditions of ‘white light’ and at 0 °C. Our results show that F. cylindrus, and potentially other polar diatom strains, are very well suited for Fx and Ddx+Dtx production under conditions of low temperature and light intensity, reaching similar productivity levels as model temperate counterparts such as Phaeodactylum tricornutum. The present work supports the possibility of using polar diatoms as an efficient cold and low light-adapted bioresource for xanthophyll pigments, especially usable in Nordic countries.

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Section: Discussionsupporting

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Potential for the Production of Carotenoids of Interest in the Polar Diatom Fragilariopsis cylindrus

et al. 2022

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“…Although microalgae hold great promise as a feedstock for biofuels, biofertilizers, food, and feed, the high cost associated with manufacturing compounds derived from algal biomass remains a challenge for economic competitiveness. The cultivation of microalgae necessitates artificial lighting and precise temperature control, which introduces expenses that impede the widespread utilization of microalgal biomass (Funk et al, 2021).…”

Section: Microalgae Biorefineries Towards Sustainable Productionmentioning

confidence: 99%

Spirulina and Its Potential in Bioproduct Production: a Review

Lopes

Righi

Costa

2023

EMSD

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The use of the microalgal biomass in biorefineries can produce different products, such as biofuel, food, feed, and bioactive compounds. In addition, the microalgae used in waste treatment can have its biomass exploited, such as Spirulina sp., which shows satisfactory results in the studies performed. Thus, the present study aimed to describe the production of Spirulina bioproducts in biorefineries, demonstrating its benefits and its potential for sustainable development. The study utilized an integrative literature review methodology, and the research question was "What bioproducts can be developed from a Spirulina biorefinery and how can they contribute to sustainability?". The articles were initially screened based on their title and abstract, and only those that fit the research question were selected for full reading. The reviewed studies suggest that the processing of microalgae within biorefineries has significant potential for synergy, sustainable processes can be developed that maximize the use of microalgae biomass and minimize waste and emissions. Spirulina can be used to treat wastewater from food processing plants, where microalgae could absorb nutrients and organic matter while producing biomass that could be harvested and converted into other bioproducts. However, challenges such as high operating costs, variability in biomass and effluent composition, and the need for scalable technologies must be addressed to fully realize the benefits of microalgae in biorefineries. Further research and investment in this area are necessary to develop cost-effective, scalable, and sustainable microalgae biorefineries, involving interdisciplinary collaborations between different fields and partnerships between academia, industry, and government.

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“…Therefore, renewable energies are presented as an alternative for developing countries, since it can be a way to boost their economy and increase energy availability and accessibility [94]. Countries with abundant renewable resources such as solar, wind and ocean energies (waves, tides) can become leaders in the production and sale or export of renewable energy, and even possibly in the field of technologies associated with renewable energy [95]. Investments in renewable energy infrastructure and more energy-efficient technologies can be driven by the energy demand of growing industries and population [96].…”

Section: Proposals For Future Actionsmentioning

confidence: 99%

Renewable Energies and Blue Economy: New Trends in Global Research

et al. 2023

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In recent years, increasing attention has been paid to the blue economy and its economic and environmental benefits. Renewable energies are an alternative to fossil fuels and can contribute to reducing the carbon footprint of maritime sectors and of the general economy. This article aims to analyze the scientific production in the Web of Science (WoS) database and to propose some measures for future actions. The results indicate new trends in scientific articles related to climate change, aquaculture, blue growth and marine spatial planning, and private administration offering proposals that can be useful for economic progress based on the oceans of the nations that have bet on this model of sustainable development and the need for promoting the green and digital conversion of firms, namely those acting in sea-related activities.

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Blue economy in the North: Scandinavian algal biotechnology to the rescue

Cited by 5 publications

References 15 publications

Potential for the Production of Carotenoids of Interest in the Polar Diatom Fragilariopsis cylindrus

Potential for the Production of Carotenoids of Interest in the Polar Diatom Fragilariopsis cylindrus

Spirulina and Its Potential in Bioproduct Production: a Review

Renewable Energies and Blue Economy: New Trends in Global Research

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