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Titre du document / Document title

Identification of the origin of commercial enological tannins by the analysis of monosaccharides and polyalcohols

Auteur(s) / Author(s)

LUZ SANZ M. (1) ; MARTINEZ-CASTRO Isabel (1) ; MORENO-ARRIBAS M. Victoria (2) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Instituto de Química Orgánica General, Consejo Superior de Investigaciones Centíficas (CSIC), juan de la Cierva 3, 28006 Madrid, ESPAGNE
(2) Instituto de Fermentaciones Industriales, Consejo Superior de Investigaciones Cientificas (CSIC), Juan de la Cierva 3, 28006 Madrid, ESPAGNE

Résumé / Abstract

The monosaccharide and polyalcohol composition of 28-samples of different commercial tannins, including oak wood, grape seed and skin, plant gall, chestnut, quebracho and gambier, has been evaluated by gas chromatography-mass spectrometry after derivatization into their trimethylsilyl ethers. Quercitol was found to be characteristic of oak tannins, whereas gall plant tannins could be differentiated by their content of pinitol. Myo-inositol and arabitol were detected in tannins from quebracho. These polyalcohols, together with muco-inositol and chiro-inositol, were found in tannins from chestnut while bornesitol was found to be characteristic of tannins from gambier. Monosaccharide composition also helped to distinguish among tannin origins: arabinose, xylose, fructose and glucose were quantified in oak, quebracho and chestnut tannins, whereas only fructose and glucose were detected in plant gall and grape tannins. These results imply that the qualitative study of monosaccharides and polyalcohols could help to determine and control the authenticity of enological tannins.

Revue / Journal Title

Food chemistry    ISSN  0308-8146   CODEN FOCHDJ 

Source / Source

2008, vol. 111, no3, pp. 778-783 [6 page(s) (article)] (1/4 p.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Kidlington, ROYAUME-UNI  (1976) (Revue)

Mots-clés anglais / English Keywords

Alcoholic beverage

;

Flavonoid

;

Wine

;

Analysis

;

Polyphenol

;

Tannin

;

Origin

;

Identification

;

Mots-clés français / French Keywords

Boisson alcoolisée

;

Flavonoïde

;

Vin

;

Analyse

;

Polyphénol

;

Tanin

;

Origine

;

Identification

;

Mots-clés espagnols / Spanish Keywords

Bebida alcohólica

;

Flavonoide

;

Vino

;

Análisis

;

Polifenol

;

Tanino

;

Origen

;

Identificación

;

Localisation / Location

INIST-CNRS, Cote INIST : 17810, 35400019605329.0370

Nº notice refdoc (ud4) : 20520307



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