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Characterisation of highly polymerised prodelphinidins from skin and flesh of four cashew apple (Anacardium occidentale L.) genotypes Inra
Michodjehoun-Mestres, L.; Souquet, J.M.; Fulcrand, H.; Meudec, E.; Reynes, M.; Brillouet, J.M..
Tannins were extracted by acetone/water 60:40 from skin and flesh of four cashew apple genotypes from Brazil and Benin (West Africa), and separated from monomeric phenols. Tannins were submitted to acid-catalysed degradation in the presence of phloroglucinol and the products were analysed by HPLC-DAD/ESI-MS. Both skin and flesh tannins contained high percentages of (-)-epigallocatechin and (-)epigallocatechin-O-gallate, followed by minor quantities of (-)-epicatechin and (-)-epicatechin-3-O-gallate; 100% of the compounds were the 23-cis configuration. Skin tannins were half as galloylated (similar to 20%) than flesh tannins (similar to 40%). Their weight-average molecular weight (M-w) was high
Tipo: Journal Article Palavras-chave: CASHEW APPLE; PSEUDO FRUIT; SKIN; FLESH; TANNIN; PRODELPHINIDIN; EPIGALLOCATECHIN; SIZE-EXCLUSION CHROMATOGRAPHY; TANNASE.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010f4002907&uri=/notices/prodinra1/2010/08/
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