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Chemical composition and 13C NMR spectroscopic charcaterisation of ulvans from Ulva (Ulvales, Chlorophyta) Inra
Lahaye, M.; Alvarez-Cabal Cimadevilla, E.; Kuhlenkamp, R.; Quemener, B.; Lognoné, V.; Dion, P..
The chemical composition and structures of several ulvan extracts isolated from various Ulva species were studied. They were all composed mainly of rhamnose, glucuronic acid, xylose, glucose and sulphate with smaller amounts of iduronic acid and traces of galactose. Proteins were also present, most likely as contaminants. Precise quantification of the uronic acid content by chemical-enzymatic hydrolysis coupled to HPAEC-PAD analysis and by colorimetry was not achieved, most likely due to the incomplete hydrolysis of glucuronan segments, inadequate HPAEC-pulsed-amperometric response factor for iduronic acid and to a possible differential colorimetric response of the two uronic acids. 13C NMR spectroscopic investigation of different ulvans demonstrated that...
Tipo: Journal Article Palavras-chave: ULVANE; COMPOSITION CHIMIQUE; CARACTERISATION PHYSICOCHIMIQUE; SPECTROMETRIE RMN ULVAN; ULVA; HPAEC-PAD; NMR SPECTROSCOPY; IDURONIC ACID.
Ano: 1999 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB0000012413081248&uri=/notices/prodinra1/2010/11/
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Etude préliminaire sur la production comparée de Palmaria palmata en laboratoire et dans la nature ArchiMer
Andriamampandry, A.; Delepine, R.; Dion, P..
Tipo: Text
Ano: 1979 URL: http://archimer.ifremer.fr/doc/00306/41691/40900.pdf
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Recherches sur les réactions écophysiologiques d'agarophytes des côtes françaises ArchiMer
Andriamampandry, A.; Asensi, A.; Delepine, R.; Dion, P..
Tipo: Text
Ano: 1979 URL: http://archimer.ifremer.fr/doc/00306/41692/40901.pdf
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