title: Use of polyaspartate as inhibitor of tartaric precipitations in wines.
abstract: All additives used to stabilize wines against the precipitations of potassium bitartrate have some limits: metatartaric acid (MTA) is effective but very unstable, carboxymethylcellulose is stable and effective in white wines but affects color stability in red wines, mannoproteins have a variable effectiveness depending on wine composition. This work was aimed at testing the effect of new stabilizing products on tartaric precipitations, focusing on the use of Na and K polyaspartate salts (PASPs). The effectiveness of 4 different PASPs and 1 MTA added to red and white wines was compared using the mini-contact test and cold test. The dose effect and the stability of the products over time were also studied. The PASPs showed a similar stabilizing effect and a longer stability over time compared to MTA. PASPs can be considered interesting as additives for wine tartaric stabilization. Further work is in progress to better characterize their enological properties.
authors.affiliation: Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria - Centro di Ricerca per l'Enologia, via P. Micca 35, 14100 Asti, Italy. Electronic address: antonella.bosso@entecra.it.
authors.forename: Antonella
authors.initials: A
authors.lastname: Bosso
authors.affiliation: Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria - Centro di Ricerca per l'Enologia, via P. Micca 35, 14100 Asti, Italy.
authors.forename: Loretta
authors.initials: L
authors.lastname: Panero
authors.affiliation: Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria - Centro di Ricerca per l'Enologia, via P. Micca 35, 14100 Asti, Italy.
authors.forename: Maurizio
authors.initials: M
authors.lastname: Petrozziello
authors.affiliation: Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria - Centro di Ricerca per l'Enologia, via P. Micca 35, 14100 Asti, Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: Sollazzo
authors.affiliation: Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria - Centro di Ricerca per l'Enologia, via P. Micca 35, 14100 Asti, Italy.
authors.forename: Andriani
authors.initials: A
authors.lastname: Asproudi
authors.affiliation: Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria - Centro di Ricerca per l'Enologia, via P. Micca 35, 14100 Asti, Italy.
authors.forename: Silvia
authors.initials: S
authors.lastname: Motta
authors.affiliation: Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria - Centro di Ricerca per l'Enologia, via P. Micca 35, 14100 Asti, Italy.
authors.forename: Massimo
authors.initials: M
authors.lastname: Guaita
mesh_terms: D001224:Aspartic Acid / Q000032:analysis; D002266:Carboxymethylcellulose Sodium / Q000737:chemistry; D055598:Chemical Phenomena; D003116:Color; D005511:Food Handling; D005520:Food Preservatives / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008562:Membrane Glycoproteins / Q000737:chemistry; D008970:Molecular Weight; D010455:Peptides / Q000737:chemistry*; D014920:Wine / Q000032:analysis*
chemical_list: D005520:Food Preservatives; D008562:Membrane Glycoproteins; D010455:Peptides; C025363:mannoproteins; C017645:polyaspartate; D001224:Aspartic Acid; D002266:Carboxymethylcellulose Sodium
keywords: Metatartaric acid; Polyaspartate; Sustainability; Tartaric stability