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Les auteurs presentent une technique legerement modifiee de recherche de la betaine par chromatographie sur couches minces et son application a des vins issus de differents cepages blancs et rouges 1975 et 1976 ; dans la plupart des cas des petites quantites de betaine existent naturellement dans les vins.+++In that work, a method of investigation of betaine by thinlayer-chromatography and its application to wines of different white and red varieties is described most of them contain small amounts of betain, which occurs naturally in wines.

Détection de la bétaïne et recherche de la chaptalisation