Tufo a ajo en un vino blanco....

El otro día en la cata de vinos blancos de Verema.com nos salieron dos botellas del mismo vino con un tufo a ajo insoportables. Leyendo por ahí veo que el ácido sórbico añadido a los vinos huele ligeramente a ajo... También he encontrado este interesanto párrafo:

";Odours and tastes from sulphurated compounds may be due to a surplus of sulphurous anhydrite, which gives to wine a pungent smell and a vaguely bitter taste, or to sulphur, from antiparasite treatments of grapes, which gives a very unpleasant taste. The sulphuric acid gives a typical smell of rotten eggs and the mercaptans, formed by the reaction between the same sulphuric acid and the alcohols in wine, give a particularly unpleasant garlic smell, which also give a bitter taste.";

Alguna pista???