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Environmental conditions influence on the physicochemical properties of wild and cultivated Palmaria palmata in the Canadian Atlantic shore

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Abstract

Seaweeds are a promising biomass resource that contain proteins with high potential for sustainable exploration. Palmaria palmata, one of the main red seaweeds of the Canadian coast, has a high protein content and much interest as an ingredient. Understanding the associations between environmental conditions and P. palmata color and chemical composition is of paramount importance to predict optimum harvesting conditions and thus increase its value. This study investigated the influence of environmental conditions on the composition and color of wild and cultivated P. palmata. Important changes in these parameters were found for P. palmata harvested in the subarctic Canadian transition zone, depending on the harvesting site/month. A marked increase in carbohydrates and decrease in ashes content (up to 2-fold) were observed from June to October, while photosynthetically active radiation (PAR) values have decreased. These associations suggest that wild P. palmata is shade acclimated to the Gulf of Saint Lawrence region. Maximum protein content was found for samples in June and was especially higher for samples from Grande-Rivière. Samples were intensely colored in June, possibly related to the higher protein content found in this month. Although several intricate factors seem to influence color development in this species, data from this study assist harvesting sites and period to maximise dark red color and avoid pigmentation degradation and paleness. In sum, these results may help indicate the best site/period to take commercial advantage of this species and orient future research on the multifactored relationships between environmental factors and macroalgae chemical composition and color.

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Data availability

Data available in a publicly accessible repository that does not issue DOIs Publicly available datasets were analyzed in this study. This data can be found here: [OGSL 2017 Observatoire Global du Saint-Laurence. Prévisions océaniques. https://ogsl.ca/ocean/ Accessed 15 April 2017, as described in the Methods section].

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Acknowledgments

Our thanks to the Merinov team, Marie Lionard, Isabelle Gendron-Lemieux, Lisandre Solomon and Francine Aucoin for field sample collection. The authors wish to thank Diane Gagnon (Department of Food Sciences, Laval University, QC, Canada) for her technical expertise. The authors would also like to thank the Institute of Nutrition and Functional Foods (INAF, QC, Canada), and the Fonds de Recherche Nature and Technologies (FRQNT, QC, Canada), for their financial support.

Funding

This research was funded by the Fonds de Recherche du Québec Nature et Technologies (Quebec Fund for Research in Nature and Technology), Program: “Projets de recherche en équipe”, grant number 119723.

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Authors and Affiliations

  1. Institut sur la nutrition et les aliments fonctionnels (INAF), Département des sciences des aliments, Université Laval/Québec, Québec, Canada

    M. M. M. Vasconcelos, G. V. Marson, S. L. Turgeon, E. Tamigneaux & L. Beaulieu

  2. Universidade Federal do Piauí /UFPI, Campus Universitário Ministro Petrônio Portella - Bairro Ininga, CEP, Teresina, Piauí, 64049-550, Brazil

    M. M. M. Vasconcelos

  3. École des pêches et de l’aquaculture du Québec (ÉPAQ), Cégep de la Gaspésie et des Iles, Quebec Fisheries and Aquaculture Innovation Centre, Merinov, 6 rue du Parc, Grande-Rivière, Québec, G0C 1V0, Canada

    E. Tamigneaux

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Contributions

Conceptualization, M.M.M.V., E.T., S.L.T. and L.B.; methodology, M.M.M.V. and G.V.M.; validation, G.V.M., S.L.T., E.T., L.B.; formal analysis, M.M.M.V. and G.V.M.; investigation, M.M.M.V. and G.V.M.; resources, L.B.; writ-ing—original draft preparation, M.M.M.V. and G.V.M.; writing—review and editing, G.V.M., S.L.T., E.T. and L.B.; visualization, M.M.M.V. and G.V.M.; supervision, L.B.; project administration, L.B.; funding acquisition, L.B. All authors have read and agreed to the published version of the manuscript.

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Correspondence to L. Beaulieu.

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Vasconcelos, M.M.M., Marson, G.V., Turgeon, S.L. et al. Environmental conditions influence on the physicochemical properties of wild and cultivated Palmaria palmata in the Canadian Atlantic shore. J Appl Phycol 34, 2565–2578 (2022). https://doi.org/10.1007/s10811-022-02783-2

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