TY - JOUR
T1 - Impact of cultivation of Mastocarpus stellatus in IMTA on the seaweeds chemistry and hybrid carrageenan properties
AU - Azevedo, Gabriela
AU - Domingues, Bernardo
AU - Abreu, Helena
AU - Sousa-Pinto, Isabel
AU - Feio, António Gabriel Malagueta
AU - Hilliou, Loic
N1 - Conference code: 3rd
PY - 2015/2/13
Y1 - 2015/2/13
N2 - 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.
AB - 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.
KW - Hybrid carrageenan
KW - Hydrogel
KW - IMTA
KW - Mastocarpus stellatus
KW - Productivity
UR - http://www.scopus.com/inward/record.url?scp=84910605543&partnerID=8YFLogxK
U2 - 10.1016/j.carbpol.2014.04.069
DO - 10.1016/j.carbpol.2014.04.069
M3 - Article
C2 - 25458283
AN - SCOPUS:84910605543
SN - 0144-8617
VL - 116
SP - 140
EP - 148
JO - Carbohydrate Polymers
JF - Carbohydrate Polymers
T2 - 3rd EPNOE International Polysaccharide Conference
Y2 - 21 October 2013 through 24 October 2013
ER -