Different Chondrus crispus aquaculture methods and carrageenan extraction

Tanoeiro, João Rui; Fortunato, Duarte; Cotas, João; Morais, Tiago; Afonso, Clélia; Pereira, Leonel

http://hdl.handle.net/10400.8/8778

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Abstract(s)

With the notable scarcity of Chondrus crispus on the Portuguese coast, and interest in exploiting compounds such as carrageenan, this study focuses on investigating different aquaculture methods and recording the yield of carrageenan from specimens grown by different methods. We compare the growth of Chondrus crispus in aquaculture using Free Floating, Cages, Attempted Fixation on Rock, and Fixed Line similar to Long Line. The best method was Free Floating where Nursery 0 had a 24-day Specific Growth Rate (SGR) of 2.08 ± 0.47%/day. The worst method in terms of growth was Nursery 2 (Attempted Fixation on Rock) where the SGR at 28 days was 0.33 ± 0.69%/day, and no fixation was observed. In terms of carrageenan extraction, all culture methods gave rise to biomass that had a lower extraction yield than wild specimens, at 50.95 ± 4.10%. However, the Free-Floating method from Nursery 1 showed an acceptable carrageenan content (31.43 ± 7.00%). Therefore, we demonstrate that the concept of C. crispus cultivation may be key to promoting the sustainability and stability of this species.

Description

This work was financed by national funds through the FCT—Foundation for Science and Technology, I.P., within the scope of projects UIDB/04292/2020 and UIDP/04292/2020), and project LA/P/0069/2020 granted to the Associate Laboratory ARNET. João Cotas thanks the European Regional Development Fund, through the Interreg Atlantic Area Program, under the project NASPA (EAPA_451/2016). This work also was co-financed by the project MENU—Marine Macroalgae: Alternative recipes for a daily nutritional diet (FA_05_2017_011) which co-financed this research, funded by the Blue Fund under Public Notice No. 5—Blue Biotechnology.

Keywords

Chondrus crispus SGR Carrageenan Aquaculture Macroalgae

URI

http://hdl.handle.net/10400.8/8778

Citation

Tanoeiro, J.R.; Fortunato, D.; Cotas, J.; Morais, T.; Afonso, C.; Pereira, L. Different Chondrus crispus Aquaculture Methods and Carrageenan Extraction. Appl. Sci. 2023, 13, 5466. https://doi.org/ 10.3390/app13095466