Efficient use of bicarbonate for mass production and carbon isotopic labelling of the green alga Ulva ohnoi under natural conditions

Mass aquaculture production of the green seaweed Ulva is advancing under the stimulus of many interesting applications. Increasing the efficiency of carbon use in Ulva mass cultures is important to improve its production and diversify biomass applications. Given the high capacity of Ulva species to...

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Bibliographic Details
Published in:Journal of applied phycology 2021-12, Vol.33 (6), p.3987-3999
Main Authors: Cañavate, José-Pedro, Anguís-Climent, Victoria, Fernández-Díaz, Catalina
Format: Article
Language:English
Subjects:
Algae
Aquaculture
Aquatic plants
Bicarbonates
Biochemical composition
Biomass
Biomedical and Life Sciences
Carbon
Cultures
Ecology
Estimates
Freshwater & Marine Ecology
Growth rate
Isotope labelling
Labeling
Life Sciences
Mass
Mass production
Nutritive value
Phosphorus
Plant Physiology
Plant Sciences
Radioactive labelling
Seaweeds
Sodium
Sodium bicarbonate
Ulva ohnoi
Uptake
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Summary:Mass aquaculture production of the green seaweed Ulva is advancing under the stimulus of many interesting applications. Increasing the efficiency of carbon use in Ulva mass cultures is important to improve its production and diversify biomass applications. Given the high capacity of Ulva species to use bicarbonate as a C source, mass cultures of Ulva ohnoi carried out under natural conditions and controlled pH were stoichiometrically supplied with sodium bicarbonate on demand. The specific growth rate (average 0.108 ± 0.008 day −1 ) and the biochemical composition of U. ohnoi remained stable over three consecutive production cycles, in which C conversion from added bicarbonate into net produced biomass ranged between 88.5 ± 4.2 and 95.9 ± 0.9%. C conversion was significantly higher ( p  
ISSN:0921-8971
1573-5176
DOI:10.1007/s10811-021-02567-0