Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/29655

TitleImpact of cultivation of Mastocarpus stellatus in IMTA on the seaweeds chemistry and hybrid carrageenan properties
Author(s)Azevedo, Gabriela
Domingues, Bernardo
Abreu, Helena
Pinto, Isabel Sousa
Feio, Gabriel
Hilliou, L.
KeywordsIMT
Mastocarpus stellatus
Productivity
Hybrid carrageenan
Hydrogel
Carrageenan
Seaweed
Aquaculture
Biology
Chemistry
Viscosity
IMTA
Issue date2015
PublisherElsevier
JournalCarbohydrate polymers
Abstract(s)The biomass yield potential of Mastocarpus stellatus, a commercially attractive carrageenophyte for foods and pharmaceutics, was investigated by cultivating the seaweeds in the nutrient-rich outflow of a commercial fish farm. Results from two consecutive 4 weeks experiments indicate that the cultivation of this seaweed produces a mean biomass of 21 to 40.6 g DW m−2 day−1 depending on the time of the experiment. DRIFT and CP–MAS NMR analyses of seaweeds indicate that cultivation during May affected quantitatively the seaweeds chemistry, and thus the chemical and gelling properties of native extracts of kappa/iota-hybrid carrageenan (KI). Overall, algal growth leads to the production of more sulphated KI, the percentage increase varying between 27% and 44% for the two experiments. However, alkali treatment of seaweeds before extraction reduces the variations in gelling properties of KI induced by the algal growth. This study demonstrates the capacity of growing M. stellatus in an integrated multi-trophic aquaculture system for the sustainable production of high value polysaccharides.
TypeArticle
DescriptionProva tipográfica. "Available online 26 April 2014"
URIhttp://hdl.handle.net/1822/29655
DOI10.1016/j.carbpol.2014.04.069
ISSN0144-8617
Publisher versionhttp://www.sciencedirect.com/science/article/pii/S0144861714004263
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:IPC - Artigos em revistas científicas internacionais com arbitragem

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