What is it about?
It describe the variation in thechemical composition, alginate yield, fucoidan and other extract content, including the anticoagulant, antioxidant activity of the extracts and the quality of alginates, from blades and stipes from Eisenia arborea
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Why is it important?
If the main interest is to produce alginates, we suggest algae harvesting from January to March. Although E. arborea is a perennial species, collection in this period would not affect the reproduction season, which is from July to November
Perspectives
E. arborea shows changes in its chemical composition between seasons and structures in BM. These variations are detected only with high-frequency sampling (at least bimonthly). Blades can be considered for use as forage and human food, because they are rich in energy (carbohydrates) and minerals, with a low fat content. In addition, blades contain molecules with antioxidant activity, which give them added nutritional value. E. arborea stipes are a suitable resource for obtaining alginates that may compete in the market of food and pharmaceutical additives, and also have environmental and industrial applications. If alginates are the main interest to exploit this species, we recommend using both structures of the algae (blades and stipes). If the interest is food and bioactive molecules we suggest using only blades, carrying out the harvest above the meristematic zone, as proposed by Mexican regulations.
Gustavo Hernández-Carmona
Instituto Politecnico Nacional
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This page is a summary of: Monthly variation in the chemical composition and biological activity of Sargassum horridum, Botanica Marina, January 2018, De Gruyter,
DOI: 10.1515/bot-2017-0031.
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