Application of response surface methodology to study the influence of hydrothermal processing on phytochemical constituents of the Irish edible brown seaweed Himanthalia elongata
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Sabrina Cox
Abstract
We used response surface methodology to investigate the effect of time and temperature of hydrothermal processing (blanching) on the phytochemical content, texture and colour of a semi-dried brown seaweed (Himanthalia elongata). A central composite design was employed with a hydrothermal processing time of 10–30 min and temperature of 60–90°C. Predicted models were found to be significant for total phenolic content, 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity, total flavonoids, total condensed tannins, texture and colour. The predicted values for each of the responses were in good agreement with experimental values. Processing time had the most significant effect on phytochemical constituents of H. elongata. An acceptable edible texture and colour of seaweed was also achieved during the blanching procedure. Thus, central composite design and response surface methodology can be used to model phytochemical content, texture and colour of H. elongata while minimising the number of experiments required. Multiple response optimisation demonstrated that the phytochemical content of H. elongata may be maximised by blanching for 20.4 min at 80.5°C.
©2011 by Walter de Gruyter Berlin Boston
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Articles in the same Issue
- Research Article
- Iron released from ilmenite mineral sustains a phytoplankton community in microcosms
- Physiological responses of Hizikia fusiformis to copper and cadmium exposure
- Nitrate uptake and duration of internal nitrogen reserves in the kelp Eisenia arborea
- Characterization and expression patterns of two 70-kDa heat shock protein genes in the intertidal red alga Porphyra yezoensis
- A new method for removing microflora from macroalgal surfaces: an important step for natural product discovery
- Application of response surface methodology to study the influence of hydrothermal processing on phytochemical constituents of the Irish edible brown seaweed Himanthalia elongata
- A multigene phylogenetic assessment of the Dilsea/Neodilsea species complex (Dumontiaceae, Gigartinales) supports transfer of Neodilsea natashae to the genus Dilsea
- First record of the Indo-Pacific seaweed Codium arabicum Kütz. (Bryopsidales, Chlorophyta) in the Mediterranean Sea
- Decadal-scale changes in the shallow subtidal benthos of an Irish marine reserve
