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Advisor(s)
Abstract(s)
Sargassum muticum is an important source of bioactive polysaccharides; hence,
high hydrostatic pressure (HHP) was used to improve their extraction efficiency.
Response surface methodology and a Box-Behnken full factorial design were
employed to assess and optimize the effects of extraction conditions on the yield,
total sugars, total sulfated sugars and antioxidant activity of S. muticum extracts.
The extraction yield ranged between 32 and 40.4% independently of the extraction
conditions or seaweed solid/liquid ratio resulting in average increases of 3.6
to 4.8-fold for total sugars and sulfated sugars, as compared to conventional
extraction. Extracts displayed improved antioxidant activities, yet maximum values
were achieved under different optimum conditions of HHP processing, for
example, 5–5.5 min, 300 MPa and 1 g of dry seaweed for yield. In conclusion, the
optimal HHP technology conditions described in this paper enables to obtain
enriched bioactive polysaccharide S. muticum extracts.
Description
Keywords
Citation
Rodrigues, D., Freitas, A. C., Queirós, R., Rocha-Santos, T. A.P., Saraiva, J. A., Gomes, A. M.P. and Duarte, A. C. (2017). Bioactive Polysaccharides Extracts from Sargassum muticum by High Hydrostatic Pressure. Journal of Food Processing and Preservation, 41(1), 1-12
Publisher
Wiley