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Registros recuperados: 7
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Analysis of anthocyanins in strawberry varieties IPB - Escola Superior Agrária
Lopes-da-Silva, M.F.; Escribano-Bailón, M.T.; González-Paramás, A.M.; Rivas-Gonzalo, J.C.; Santos-Buelga, Celestino.
Comissão Europeia (Fundo Social Europeu) e Governo Português através do Programa PRODEP (III) - ref.ª 5.3/N/199.006/00-Doutoramento.
Tipo: ConferenceObject Palavras-chave: Strawberry varieties; Anthocyanin composition; Cyanidin derivatives; Pelargonidin derivatives.
Ano: 2002 URL: http://hdl.handle.net/10198/5767
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Anthocyanin composition and related pigments in strawberry IPB - Escola Superior Agrária
Lopes-da-Silva, M.F.; Escribano-Bailón, M.T.; Martin-Lopez, P.; Rivas-Gonzalo, J.C.; Santos-Buelga, Celestino.
The anthocyanin composition of the strawberry has been object of various studies, but it is still not fully characterized. It is well known the presence af pelarganidin 3 - glucoside (Pg 3 -gluc) as major anthocyanin, usually accompanied of smaller proportions of pelargonidin 3- rutinoside (Pg 3 -rut) and cyanidin 3-glucosid e (Cy. 3- gluc).
Tipo: ConferenceObject Palavras-chave: Strawberry cultivars; Anthocyanin composition; Minor pigments; C-C linked anthocyanin and flavanol residues.
Ano: 2004 URL: http://hdl.handle.net/10198/5969
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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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Flavan-3-ol composition of strawberries IPB - Escola Superior Agrária
Lopes-da-Silva, M.F.; Santos-Buelga, Celestino; Rivas-Gonzalo, J.C.; Escribano-Bailón, M.T..
Comissão Europeia (Fundo Social Europeu) e Governo Português através do Programa PRODEP (III) - ref.ª 5.3/N/199.006/00-Doutoramento.
Tipo: ConferenceObject Palavras-chave: Strawberry varieties; Flavan-3-ol composition; HPLC-DAD-MS analysis; Catechin-derived flavanols.
Ano: 2004 URL: http://hdl.handle.net/10198/5766
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Flavanol-anthocyanin condensed pigments in plant extracts IPB - Escola Superior Agrária
González-Paramás, A.M.; Lopes-da-Silva, M.F.; Martin-Lopez, P.; Macz-Pop, G.; Gonzalez-Manzano, S.; Alcalde-Eon, C.; Perez-Alonso, J.J.; Escribano-Bailón, M.T.; Rivas-Gonzalo, J.C.; Santos-Buelga, Celestino.
Pigments resulting from the direct condensation of anthocyanins and flavanols are usually associated with reactions taking place during processing and storage of plant-derived foods and beverages and have been particularly studied in aged red wines. In this paper, small amounts of flavanol-anthocyanin condensed pigments are found in different plant extracts. Structures are suggested for 10 such condensed pigments detected in extracts of strawberry, runner beans, purple corn and grape skins, based on their MS" fragmentation patterns, following analyses by electrospray tandem mass spectrometry. All of them correspond to dimers containing a flavan-3-ol [either (epi)afzelechin, (epi)catechin or (epi)gallocatechin] as the upper unit carbon-carbon linked to a...
Tipo: Article Palavras-chave: Flavanol-anthocyanin; Condensed pigments; Strawberry; Runner bean; Purple corn; Grape skin.
Ano: 2006 URL: http://hdl.handle.net/10198/5857
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Stability of pelargonidin 3-glucoside in model solutions IPB - Escola Superior Agrária
Lopes-da-Silva, M.F.; Escribano-Bailón, M.T.; Rivas-Gonzalo, J.C.; Santos-Buelga, Celestino.
Comissão Europeia (Fundo Social Europeu) e Governo Português através do Programa PRODEP (III) - ref.ª 5.3/N/199.006/00-Doutoramento.
Tipo: ConferenceObject Palavras-chave: Pelargonidin 3-glucoside; Model solutions; Color change; Storage; Anthocyanin breakdown products; Aerobic/anaerobic conditions.
Ano: 2004 URL: http://hdl.handle.net/10198/5765
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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: 7
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