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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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Ethylene permeability of wheat gluten film as a function of temperature and relative humidity Inra
Mujica Paz, H.; Guillard, V.; Reynes, M.; Gontard, N..
The ethylene permeability of a wheat gluten filmwas studied as a function of relative humidity (RH) (from 0 to 100%) and temperature (from 3 to 45◦C), using response–surface methodology. Ethylene permeability values ranged in a wide scale from 1 to 3098 amolm−1 s−1 Pa−1. The exponential effect of relative humidity on ethylene p ermeability was related to the boosting effect of increasing film water content on ethylene solubility and diffusivity in the hydrated film. The temperature dependency of the ethylene permeability data showed a strong disruption near the glass transition temperature value (25 ◦C at 75% RH). The glass transition phenomenon and its effect on chain mobility could explain the interesting synergic effect of both temperature and relative...
Tipo: Journal Article Palavras-chave: FILM COMESTIBLE; BIOEMBALLAGE ACTIF WHEAT GLUTEN FILMS; EDIBLE FILMS; GAS PERMEABILITY; SELECTIVITY.
Ano: 2005 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD200795e7ef74&uri=/notices/prodinra1/2007/04/
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Monomeric phenols of cashew apple (Anacardium occidentale L.) Inra
Michodjehoun-Mestres, L.; Souquet, J.M.; Fulcrand, H.; Bouchut, C.; Reynes, M.; Brillouet, J.M..
Monomeric phenols were extracted by acetone/water (60:40) from the skin and flesh of four cashew apple genotypes from Brazil and Benin (West Africa), purified by absorption chromatography and subjected to HPLC-DAD/ESI-MS analysis. Skins were found much richer than fleshes in simple phenolics. Flavonol glycosides were dominant with myricetin and quercetin hexosides (2 of each), pentosides (3 of each), and rhamnosides as majorcompounds. Anthocyanidin glycosides were detected in skins from the two scarlet and orange pigmented genotypes as peonidin, petunidin and cyanidin 3-O-hexosides, and were absent from fleshes
Tipo: Journal Article Palavras-chave: NOIX DE CAJOU; ANTHOCYANE; PEAU; CHAIR; FAUX-FRUIT ANACARDIUM OCCIDENTALE; ANACARDIACEAE; CASHEW APPLE; PSEUDO FRUIT; MONOMERIC PHENOL; SKIN; FLESH; FLAVONOL GLYCOSIDE; ANTHOCYANIDIN GLYCOSIDE; HPLC-DAD/ESI-MS.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD200972d95ed2&uri=/notices/prodinra1/2010/08/
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