Nutritional characteristics of the potential aquaculture feed species Boekelovia hooglandii

Ruffell, Sarah E.; Packull-McCormick, Sara; McConkey, Brendan J.; Müller, Kirsten M.

doi:10.1016/j.aquaculture.2017.03.028

Cited by 8 publications

(3 citation statements)

References 33 publications

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“…Klaveness [ 29 ] reported the filamentous colonial alga Hydrurus foetidus as a potential producer of LC-PUFA and Wacker et al [ 30 ] tested the impact of different light intensities on the FA composition of the Chromulina sp. In addition to these records, Ruffell et al [ 31 ] characterized the simultaneous production of FX and PUFA by the marine chrysophyte Boekelovia hooglandii for its potential in aquaculture.…”

Section: Resultsmentioning

confidence: 99%

Hibberdia magna (Chrysophyceae): a promising freshwater fucoxanthin and polyunsaturated fatty acid producer

et al. 2023

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Background Algae are prominent producers of carotenoids and polyunsaturated fatty acids which are greatly prized in the food and pharmaceutic industry. Fucoxanthin represents a notable high-value carotenoid produced exclusively by algae. Its benefits range far beyond just antioxidant activity and include cancer prevention, anti-diabetes, anti-obesity, and many other positive effects. Accordingly, large-scale microalgae cultivation to produce fucoxanthin and polyunsaturated fatty acids is still under intensive development in the commercial and academic sectors. Industrially exploitable strains are predominantly derived from marine species while comparable freshwater fucoxanthin producers have yet to be explored. Results In this study, we searched for freshwater fucoxanthin producers among photoautotrophic flagellates including members of the class Chrysophyceae. The initial screening turned our attention to the chrysophyte alga Hibberdia magna. We performed a comprehensive cultivation experiments using a temperature × light cross-gradient to assess the impact of these conditions on the target compounds productivity. Here we present the observations that H. magna simultaneously produces fucoxanthin (max. 1.2% dry biomass) and polyunsaturated fatty acids (max. ~ 9.9% dry biomass) and is accessible to routine cultivation in lab-scale conditions. The highest biomass yields were 3.73 g L−1 accompanied by maximal volumetric productivity of 0.54 g L−1 d−1 which are comparable values to marine microalgae fucoxanthin producers in phototrophic mode. H. magna demonstrated different optimal conditions for biomass, fucoxanthin, and fatty acid accumulation. While maximal fucoxanthin productivities were obtained in dim light and moderate temperatures (23 °C× 80 µmol m−2 s−1), the highest PUFA and overall biomass productivities were found in low temperature and high light (17–20 °C × 320–480 µmol m−2 s−1). Thus, a smart biotechnology setup should be designed to fully utilize H. magna biotechnological potential. Conclusions Our research brings pioneer insight into the biotechnology potential of freshwater autotrophic flagellates and highlights their ability to produce high-value compounds. Freshwater fucoxanthin-producing species are of special importance as the use of sea-water-based media may increase cultivation costs and prohibits inland microalgae production.

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Section: Resultsmentioning

confidence: 99%

Hibberdia magna (Chrysophyceae): a promising freshwater fucoxanthin and polyunsaturated fatty acid producer

et al. 2023

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“…Klaveness [29] reported the lamentous colonial alga Hydrurus foetidus as a potential producer of LC-PUFA and Wacker et al [30] tested the impact of different light intensities on the FA composition of the Chromulina sp. In addition to these records, Ruffell et al [31] characterized the simultaneous production of FX and PUFA by the marine chrysophyte Boekelovia hooglandii for its potential in aquaculture.…”

Section: Resultsmentioning

confidence: 99%

Hibberdia magna (Chrysophyceae): Novel promising freshwater Fucoxanthin and Polyunsaturated fatty acid producer

Střížek

Přibyl

Lukeš

et al. 2022

Preprint

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Background Algae are prominent producers of carotenoids and polyunsaturated fatty acids which are relevant in the food and pharmaceutic industry. Fucoxanthin represents a notable high-value carotenoid produced exclusively by algae. Its benefits by far exceed antioxidant activity and include anti-diabetes, anti-obesity, and many other positive effects. Therefore, large-scale microalgae cultivation to produce fucoxanthin and polyunsaturated fatty acids is still under intensive development in the industry and academic sectors. Industrially exploitable strains are predominantly derived from marine species while comparable freshwater fucoxanthin producers are missing. Results In this study, we searched for freshwater fucoxanthin producers among photoautotrophic flagellates including members of the class Chrysophyceae. The initial screening turned our attention to chrysophyte alga Hibberdia magna. We performed a comprehensive cultivation experiment using the temperature × light cross-gradient to assess the impact of these conditions on the target compounds productivity. We present the observations that H. magna simultaneously produces fucoxanthin (max. 1.2% dry biomass) and polyunsaturated fatty acids (max. ~10% dry biomass) and is accessible to routine cultivation in lab-scale conditions. The highest biomass yields were 3.73 g L-1 accompanied by maximal volumetric productivity of 0.54 g L-1 d-1 which are comparable values to marine microalgae fucoxanthin producers in phototrophic mode. H. magna demonstrated different optimal conditions for biomass, fucoxanthin, and fatty acids accumulation. While maximal fucoxanthin productivities were obtained in dim light and moderate temperatures (23ᵒC × 80 µmol m-2 s-1), the highest PUFA and overall biomass productivities were found in low temperature and high light (17-20ᵒC × 320-480 µmol m-2s-1). Thus, a smart biotechnology setup should be designed to fully utilize H. magna biotechnological potential. Conclusions Our research brings pioneer insight into the biotechnology potential of freshwater autotrophic flagellates and highlights their ability to produce high-value compounds. Freshwater fucoxanthin-producing species are of special importance as the use of sea-water-based media may increase cultivation costs and it is not feasible for inland microalgae production.

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“…Currently, ≈1,000 t of microalgal biomass are used in world aquaculture, primarily in the feeding of fish fingerlings and juveniles (Priyadarshani & Rath, 2012; Ruffell et al, 2017). This application has demonstrated its influence on the growth rates of cultured organisms, food intake efficiency, better immune responses and effects on the control and treatment of diseases (Adel et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Bioprospection of biocompounds and dietary supplements of microalgae with immunostimulating activity: a comprehensive review

Júnior

Faustino

Cunha

2019

PeerJ

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The objective of this review is to analyze the role of microalgal bioprospecting and the application of microalgae as food supplements and immunostimulants in global and regional aquaculture, highlighting the Brazilian Amazon. This study evaluates the primary advantages of the application of the bioactive compounds of these microorganisms, simultaneously identifying the knowledge gaps that hinder their biotechnological and economic exploitation. The methodology used is comparative and descriptive-analytical, considering the hypothesis of the importance of bioprospecting microalgae, the mechanisms of crop development and its biotechnological and sustainable application. In this context, this review describes the primary applications of microalgae in aquaculture during the last decade (2005–2017). The positive effects of food replacement and/or complementation of microalgae on the diets of organisms, such as their influence on the reproduction rates, growth, and development of fish, mollusks and crustaceans are described and analyzed. In addition, the importance of physiological parameters and their association with the associated gene expression of immune responses in organisms supplemented with microalgae was demonstrated. Complementarily, the existence of technical-scientific gaps in a regional panorama was identified, despite the potential of microalgal cultivation in the Brazilian Amazon. In general, factors preventing the most immediate biotechnological applications in the use of microalgae in the region include the absence of applied research in the area. We conclude that the potential of these microorganisms has been relatively well exploited at the international level but not at the Amazon level. In the latter case, the biotechnological potential still depends on a series of crucial steps that involve the identification of species, the understanding of their functional characteristics and their applicability in the biotechnological area, especially in aquaculture.

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Nutritional characteristics of the potential aquaculture feed species Boekelovia hooglandii

Cited by 8 publications

References 33 publications

Hibberdia magna (Chrysophyceae): a promising freshwater fucoxanthin and polyunsaturated fatty acid producer

Hibberdia magna (Chrysophyceae): a promising freshwater fucoxanthin and polyunsaturated fatty acid producer

Hibberdia magna (Chrysophyceae): Novel promising freshwater Fucoxanthin and Polyunsaturated fatty acid producer

Bioprospection of biocompounds and dietary supplements of microalgae with immunostimulating activity: a comprehensive review

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