APPLICATIONS DE LA REFRIGERATION DES VINS DANS L’ASSURANCE DE LA STABILITE TARTRIQUE

  • TITA OVIDIU
    UNIVERSITÉ «LUCIAN BLAGA» SIBIU, 7-9, DR. I. RATIU, SIBIU, ROUMANIE
    OVIDIU.TITA@ULBSIBIU.RO
  • TITA MIHAELA
    UNIVERSITÉ «LUCIAN BLAGA» SIBIU, 7-9, DR. I. RATIU, SIBIU, ROUMANIE
  • DABIJA ADRIANA
    UNIVERSITÉ DE BACĂU, DÉPARTEMENT DE GÉNIE CHIMIQUE ET ALIMENTAIRE, 157, CALEA MARASESTI, 600115 BACĂU, ROUMANIE
  • SION IULIANA
    UNIVERSITÉ DE BACĂU, DÉPARTEMENT DE GÉNIE CHIMIQUE ET ALIMENTAIRE, 157, CALEA MARASESTI, 600115 BACĂU, ROUMANIE

Abstract

The excess of tartaric salts determines in certain conditions the formation of characteristic crystals that fall in the form of sediment. The crystallization and sedimentation of the tartaric salts are useful when they take place in the sedimentation vessel and are an inconvenience, especially from a commercial and sensorial point of view, when they appear in the bottled wines. The formation of a small crystal, called the nucleus in the liquid stage, corresponds to the creation of an interface between the two phases, process that requires a lot of energy, called interfacial energy. In the wine, the phenomenon is influenced by the presence of macromolecules inhibited by the phenomenon of agglomeration of the tartaric salts.

Cuvinte cheie

tartaric acid sedimentation wine crystals crystallization energy