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L'ISMEA (Istituto di Servizi per il Mercato Agricolo Alimentare) è un ente pubblico economico istituito con l'accorpamento dell'Istituto per Studi, Ricerche e Informazioni sul Mercato Agricolo (già ISMEA) e della Cassa per la Formazione della Proprietà Contadina, con decreto legislativo 29 ottobre 1999 n. 419, concernente il 'riordinamento del sistema degli enti pubblici nazionali'.  

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Journal Article

期刊文章

Methods of analysis of proanthocyanidins in red wines  [2002]

Di Stefano, R. (Consiglio per la Ricerca e la Sperimentazione in Agricoltura (CRA) - Istituto Sperimentale per l'Enologia, Asti (Italy)); Gentilini, N. (Consiglio per la Ricerca e la Sperimentazione in Agricoltura (CRA) - Istituto Sperimentale per l'Enologia, Asti (Italy));

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The methods of Ribéreau-Gayon and Stonestreet (1966) and Di Stefano et al. (1989) to determine red wine proanthocyanidins were compared. The proanthocyanidin concentrations obtained by the application of these methods are quite different, depending on the varietal origin and age of wine. Because the composition of wine affects the results obtained with the Ribéreau-Gayon and Stonestreet methods, a modification was proposed to eliminate the interferents influence. This modification provides a) the elimination of interferents by absorption of proanthocyanidins on C sub(18) RP cartridge, b) the elution by methanol of absorbed polyphenols and c) the application of Ribéreau-Gayon and Stonestreet method to the eluate. The data obtained by the two methods in question were also compared with the data of polyphenols by Folin Ciocalteu reagent, as well as by absorbance at 280 nm. The two methods of proanthocyanidins determination, applied after elimination of interferents, allow to make similar deductions about the tannic composition of wine
来自期刊
Rivista di Viticoltura e di Enologia (Italy)
ISSN : 0370-7865

书目信息

语言:
English
类型:
Summary
自何时收录于AGRIS:
2007
卷:
55
期:
4
起始页:
63
结束页:
74
所有题名:
"Methods of analysis of proanthocyanidins in red wines"@eng
"Méthodes de détermination des tanins dans les vins rouges"@fre
其它:
"Summaries (En, Fr, It)"
"2 tables"
"1 graph"
"13 ref."
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书目信息

语言:
English
类型:
Summary
自何时收录于AGRIS:
2007
卷:
55
期:
4
起始页:
63
结束页:
74
所有题名:
"Methods of analysis of proanthocyanidins in red wines"@eng
"Méthodes de détermination des tanins dans les vins rouges"@fre
其它:
"Summaries (En, Fr, It)"
"2 tables"
"1 graph"
"13 ref."