NDLI: Optimisation of fucoxanthin extraction from Irish seaweeds by response surface methodology

Content Provider	Springer Nature Link
Author	Shann, Emer Abu Ghannam, Nissreen
Copyright Year	2016
Abstract	Fucoxanthin is a xanthophyll pigment which occurs in marine brown algae (Phaeophyceae). The anti-diabetic, anti-obesity, anti-cancer, and antioxidant properties of fucoxanthin have been widely reported. Macroalgae, particularly brown seaweeds, grow prolifically around Irish coasts, representing a valuable resource of nutraceuticals such as fucoxanthin for functional food applications. The aim of this study was to maximise the solvent extraction yield from three anatomically discrete regions of the seaweed thallus: blade, stipe, and holdfast. Response surface methodology was applied to determine optimum parameters for extraction of fucoxanthin from the seaweed, Fucus vesiculosus, as a model species. A central composite design was applied with four extraction variables: time (30–70 min), temperature (30–70 °C), solvent pH (5.0–9.0), and percentage acetone (30–70 %). Fucoxanthin content of extracts was quantified by high-performance liquid chromatography. Percentage acetone was found to have the most significant (P = 0.0002) effect on fucoxanthin yield, followed by pH (P = 0.028) and temperature (P = 0.049). Multiple response optimisation determined that fucoxanthin yield from F. vesiculosus may be maximised by incubating at 30.0 °C for 36.5 min, pH 5.7, with 62.2 % acetone. Optimised responses were applied to a further nine brown seaweeds; Alaria esculenta, Ascophyllum nodosum, Fucus serratus, Himanthalia elongata, Laminaria digitata, Laminaria hyperborea, Pelvetia canaliculata, Saccharina latissima, and Saccorhiza polyschides. In all species, the blades contained significantly more fucoxanthin than stipes, while holdfasts contained the least. Alaria esculenta blade had the greatest yield (0.870 mg g$^{−1}$ dry mass), followed by F. vesiculosus blade (0.699 mg g$^{−1}$) and L. digitata blade (0.650 mg g$^{−1}$).
Starting Page	1027
Ending Page	1036
Page Count	10
File Format	PDF
ISSN	09218971
Journal	Journal of Applied Phycology
Volume Number	29
Issue Number	2
e-ISSN	15735176
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-11-02
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Fucoxanthin Nutraceutical Irish brown seaweeds Yield optimisation by response surface methodology High-value algal bioactives Antioxidant Plant Sciences Freshwater & Marine Ecology Plant Physiology Ecology
Content Type	Text
Resource Type	Article
Subject	Plant Science Aquatic Science

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