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Analytical Methods Vol -2

Analytical Methods Vol -1

Quantification method and organoleptic impact of added carboxymethyl cellulose to dry white wine

Content Provider	Royal Society of Chemistry (RSC)
Author	René, Laura Baudouin, Mélanie Lagrèze, Carole Salagoïty, Marie-Hélène Médina, Bernard Domec, André Guyon, François Gaillard, Laetitia
Copyright Year	2011
Abstract	Following the resolution Oeno 2-2008 of the OIV, “Organisation Internationale de la Vigne et du Vin”, the addition of carboxymethyl cellulose (CMC) in wines at a concentration lower than 100 mg L−1 is authorized in the EU (RCE 606-2009). In order to control this level, a method has been elaborated to quantify CMC addition at the maximum limit authorized. It is based on the absorbance level of a coloured complex obtained by the addition of a solution of 2,7-dihydronaphthalene in concentrated sulfuric acid to a dry white wine that has been dialyzed; the proposed method has a quantification limit of 60 mg L−1 with a 40 mg L−1 uncertainty. Despite these relatively high values, the method is, nevertheless, suitable for its purpose. Some wines, elaborated and CMC supplemented, allowed one to test the CMC quantification method, in real conditions of wine production. All the measurements provide a CMC quantification at the expected level, within the uncertainty. These samples, sets of treated and untreated wines, were submitted to sensory evaluation to assess the impact of CMC addition to wine. At the maximum authorized level, no significant difference was detected by the 20 expert panel under quality control requirements. Moreover, some experiments, performed to determine the concentration threshold at which the CMC effect is noticeable, showed that even at a level 15 times higher than the maximum amount authorized, CMC has no impact on the taste or the nose of the wines.
Starting Page	380
Ending Page	384
Page Count	5
File Format	HTM / HTML PDF
ISSN	17599660
Volume Number	3
Issue Number	2
Journal	Analytical Methods
DOI	10.1039/c0ay00549e
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	EU Carboxymethyl cellulose Wine Acid CMC Oeno Island The Internationale Sensory analysis Organisation Internationale de la Vigne
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry Engineering Chemical Engineering

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