MEDRANO-PADIAL, C.; PUERTO, M.; PRIETO, A.I.; AYALA, N.; BEAUMONT, Pauline; ROUGER, Caroline; KRISA, Stephanie; PICHARDO, S.

doi:10.3390/foods10020439

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Article de revue

Ce document a été publié dans

Foods. 2021, vol. 10, n° 2

Résumé en anglais

Genotoxic data of substances that could be used as food additives are required by the European Food Safety Authority. In this sense, the use of an extract from grapevine shoots containing a stilbene richness of 99% (ST-99), due to its antioxidant and antibacterial activities, has been proposed as an alternative to sulfur dioxide in wine. The aim of this work was to study, for the first time, the in vivo genotoxic effects produced in rats orally exposed to 90, 180, or 360 mg ST-99/kg body weight at 0, 24, and 45 h. The combination of micronucleus assay in bone marrow (OECD 474) and standard (OECD 489) and enzyme-modified comet assay was used to determine the genotoxicity on cells isolated from stomach, liver, and blood of exposed animals. The ST-99 revealed no in vivo genotoxicity. These results were corroborated by analytical studies that confirm the presence of stilbenes and their metabolites in plasma and tissues. Moreover, to complete these findings, a histopathological study was performed under light microscopy in liver and stomach showing only slight modifications in both organs at the highest concentration used. The present work confirms that this extract is not genotoxic presenting a good profile for its potential application as a preservative in the wine industry.< Réduire

Mots clés en anglais

Stilbenes

Genotoxicity

Comet assay

Micronucleus

In vivo

Rat

URI

https://oskar-bordeaux.fr/handle/20.500.12278/128740

DOI

http://dx.doi.org/10.3390/foods10020439

Project ANR

Développement d'une infrastructure française distribuée pour la métabolomique dédiée à l'innovation

Unités de recherche

Oenologie - UMR 1366

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In vivo genotoxicity evaluation of a stilbene extract prior to its use as a natural additive: A combination of the micronucleus test and the comet assay