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Anthocyanin pigments in strawberry IPB - Escola Superior Agrária
Lopes-da-Silva, M.F.; Escribano-Bailón, M.T.; Perez-Alonso, J.J.; Rivas-Gonzalo, J.C.; Santos-Buelga, Celestino.
The anthocyanin composition was analysed in strawberry fruits from five different cultivars (cv. Eris, Oso Grande, Carisma, Tudnew and Camarosa). Twenty-five defined anthocyanin pigments were detected, most of them containing Pelargonidin (Pg) as aglycone; some cyanidin (Cy) derivatives were also found. Glucose and rutinose were the usual substituting sugars, although arabinose and rhamnose were also tentatively identified; some minor anthocyanins showed acylation with aliphatic acids. A relevant aspect was the detection of anthocyanin-derived pigments, namely 5-carboxypyranopelargonidin-3-glucoside and four condensed pigments containing C–C linked anthocyanin (Pg) and flavanol (catechin and afzelechin) residues. Total anthocyanin content ranged between...
Tipo: Article Palavras-chave: Anthocyanins; Strawberry; Pelargonidin; Cyanidin-derived pigments; Anthocyanin-derived pigments.
Ano: 2007 URL: http://hdl.handle.net/10198/4556
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Identification of anthocyanin pigments in strawberry (cv Camarosa) by LC using DAD and ESI-MS detection IPB - Escola Superior Agrária
Lopes-da-Silva, M.F.; Pascual-Teresa, Sónia de; Rivas-Gonzalo, J.C.; Santos-Buelga, Celestino.
New high performance liquid chromatography (HPLC) conditions were developed for the separation of strawberry anthocyanins that provided a good resolution of peaks at a low flow rate compatible with the requirements of the mass spectrometry (MS) detector. A strawberry extract was fractionated by column chromatography and simple fractions containing basically anthocyanins were obtained, making their analysis by HPLC possible using on-line photodiode array detection and MS. Information on the identity of the major and some secondary anthocyanins in strawberry was obtained froth their retention characteristics, UV-visible spectra and mass spectra. The presence in strawberry of the previously reported cyanidin 3-glucoside, pelargonidin 3-glucoside, pelargonidin...
Tipo: Article Palavras-chave: Strawberry; Anthocyanins; Liquid chromatography-mass spectrometry; Cyanidin; Pelargonidin.
Ano: 2002 URL: http://hdl.handle.net/10198/5971
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Stability of pelargonidin 3-glucoside in model solutions in the presence and absence of flavanols IPB - Escola Superior Agrária
Lopes-da-Silva, M.F.; Escribano-Bailón, M.T.; Santos-Buelga, Celestino.
The stability of pelargonidin 3-g1ucoside (Pg3g1uc), the main anthocyanin in strawberry, has been studied in model citrate solutions (PH 3.5, 25°C) in the absence and presence flavanols (catechin and procyanidin B3) and/or oxygen. Changes in the solutions were monitorized by HPLC-DAD/MS and UV-visible spectra.
Tipo: Article Palavras-chave: Pelargonidin; Catechin; Procyanidin B3; Anthocyanin stability; Xanthylium pigments; Strawberry.
Ano: 2007 URL: http://hdl.handle.net/10198/5970
Registros recuperados: 3
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