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Molecules 2013, 18(6), 6298-6310; doi:10.3390/molecules18066298

Fucoxanthin from Undaria pinnatifida: Photostability and Coextractive Effects

Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Via Marzolo 5, Padova 35131, Italy
CNR-ISTM, Corso Stati Uniti 4, Padova 35100, Italy
ARPA-FVG Regional Agency for Environmental of Friuli Venezia Giulia Region, Via delle Acque 28, Pordenone 33170, Italy
Author to whom correspondence should be addressed.
Received: 11 April 2013 / Revised: 17 May 2013 / Accepted: 24 May 2013 / Published: 29 May 2013
(This article belongs to the Section Natural Products)
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Fucoxanthin is one of the most abundant carotenoids and possesses a number of beneficial medicinal qualities which include its anti-oxidant, anti-obesity and anti-cancer properties. In this study, the photostability of fucoxanthin in extracts with different chemical profiles was studied. The extracts were obtained from Undaria pinnatifida, a seaweed rich in this carotenoid, using conventional liquid solvent extraction procedures and the QuEChERS method. All the extracts contained all-trans-fucoxanthin as the major compound. Conventional procedures produced a fucoxanthin purity of lower than 50%, whereas after liquid-liquid partition, PSA cleanup, and PSA and GCB cleanup (QuEChERS method) fucoxanthin purity increased to 70%, 86%, and 94%, respectively. Although in the acetone extract the initial content of fucoxanthin was the highest, results demonstrate that coextractives play an important role in enhancing the rate of photodegradation. After light exposure, the conventional extracts lost around 90% of the initial fucoxanthin content. On the other hand, the extracts obtained by the QuEChERS method showed significantly higher light stability than the conventional extracts. These results suggest that the QuEChERS method could be used and further improved to obtain more purified and stable extracts for fucoxanthin from U. pinnatifida.
Keywords: fucoxanthin; Undaria; photostability; coextractives; QuEChERS fucoxanthin; Undaria; photostability; coextractives; QuEChERS

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Piovan, A.; Seraglia, R.; Bresin, B.; Caniato, R.; Filippini, R. Fucoxanthin from Undaria pinnatifida: Photostability and Coextractive Effects. Molecules 2013, 18, 6298-6310.

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