Potential of tropical macroalgae from French Polynesia for biotechnological applications
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23RD INTERNATIONAL SEAWEED SYMPOSIUM, JEJU
Potential of tropical macroalgae from French Polynesia for biotechnological applications Mayalen Zubia 1 & Olivier P. Thomas 2 & Stéphanie Soulet 1 & Marina Demoy-Schneider 1 & Denis Saulnier 3 & Solène Connan 4 & Elliot C. Murphy 2 & Florent Tintillier 1 & Valérie Stiger-Pouvreau 4 & Sylvain Petek 1,4 Received: 23 May 2019 / Revised and accepted: 6 September 2019 # Springer Nature B.V. 2019
Abstract Extracts from 26 marine macroalgal species (11 Phaeophyceae, 7 Chlorophyta, and 8 Rhodophyta) sampled from the lagoons of Tahiti, Moorea, and Tubuai (French Polynesia) were tested for several biological activities. The red macroalga Amansia rhodantha exhibited the strongest antioxidant activities using four complementary methodologies (total phenolic content, 2,2diphenyl-1-picrylhydrazyl, ferric reducing antioxidant power assay, and oxygen radical absorbance capacity assay). Therefore, the major metabolites of A. rhodantha were isolated and their structures identified. Some brown algae, especially species of the family Dictyotaceae like Padina boryana and Dictyota hamifera, showed cytotoxic activities against murine melanoma cells. Caulerpa chemnitzia extract demonstrated also a strong α-glucosidase inhibition (83.8% at 10 μg mL−1) and Asparagopsis taxiformis extract a high acetylcholinesterase inhibition (71.3% at 100 μg mL−1). Lastly, several Polynesian seaweeds demonstrated quorum-sensing inhibition for Vibrio harveyi. These results suggested that some seaweeds from French Polynesia have a great biotechnological potential for future applications in aquaculture, health, or cosmetic industries. Keywords Seaweeds . Coral reefs . Screening . Bioactive compounds . Amansia rhodantha
Introduction The use of macroalgae has undergone a substantial increase in many industrial sectors (John et al. 2011; Bedoux et al. 2014; Sharma et al. 2014; Hafting et al. 2015; Wells et al. 2017). Today, macroalgae represent a promising source of natural products with high added value for the cosmetic (e.g., Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10811-019-01920-8) contains supplementary material, which is available to authorized users. * Mayalen Zubia [email protected] 1
University of French Polynesia, UMR EIO 241, Labex CORAIL, BP6570, 98702 Faa’a, Tahiti, French Polynesia
2
Marine Biodiscovery, School of Chemistry and Ryan Institute, National University of Ireland Galway (NUI Galway), University Road, Galway H91 TK33, Ireland
3
Ifremer, UMR EIO 241, Labex CORAIL, Centre du Pacifique, Taravao, Tahiti, French Polynesia
4
CNRS, IRD, Ifremer, LEMAR, Universit Brest, 29280 Plouzane, France
mycosporine-like amino acids and phlorotannins as photoprotective agents; Sinha et al. 2007; Le Lann et al. 2016), nutraceutical (e.g., antitumor activity of fucoidan and phlorotannins; Zubia et al. 2009a, 2009b; Sanjeewa et al. 2017), agriculture (e.g., oligosaccharides used to stimulate natural defenses of plants in fertilizers; Khan et al. 2009
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