Naslov
Phenolic composition and antioxidant acivity of aqueous infusions from Capparis spinosa L. and Crithmum maritimum L. before and the after submission to a two-step in vitro digestion model

Autori
Siracusa, Laura ; Kulišić-Bilušić, Tea ; Politeo, Olivera ; Krause, Ingolf ; Dejanović, Branka ; Ruberto, Giuseppe

Izvornik
Journal of agricultural and food chemistry (0021-8561) 59 (2011), 23; 12453-12459

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
caper; sea fennel; flavonoids; phenolic acids; antioxidant activity; in vitro digestion
(flavonoids; phenolic acids; antioxidant activity; in vitro digestion)

Sažetak
This study investigated the phenolic composition and antioxidant acitivities od aqueous infusions from wild-grown caper and sea fennel before and after thier submission to an in vitro digestion process.HPLC-/UV VIS DAD/ESI-MS analysis of caper infusion identified rutin, kaempferol 3-O-rutinoside and isorhamnetin 3-O-rutinoside as dominant flavonoids in the matrix together with a series of cinnamoylquinic acid derivatives, whereas in the sea fennel aqueous infusions chlorogenic acids (5-caffeoylquinic acid), its isomers and higher derivatives were indentified as almost sole class of phenolics. Both infusions exibited good and dose dependent antioxidant activity before in vitro digestion by the DPPH method, the b-carotene method and cooper-induced oxidation of human LDL. The results showed that the majority of phenolic compounds detected in both infusions are not stable under applied simulated gastrointestinal conditions and the stability of these secondary metabolites depends strongly on the nature of corresponding matrix.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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