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  • ENOFORUM 2018: the first Spanish edition in Zaragoza
    Zaragoza, from May 31th to June 1st 2018.
    ENOFORUM is a unique event, focused on the technical needs of winemakers eager to know the main novelties of the sector; It also allows them to deepen the scientific aspects and the applications of...
    Published on: 10/01/2018

Potassium polyaspartate-based products: the revolution in tartrate stabilization of wine

Gianni Triulzi, Enartis (I), Paola Domizio, GESAAF, UniversitÓ di Firenze (I), Ricardo Lopez, Universidad de Zaragoza (E)

Potassium polyaspartate-based products: the revolution in tartrate stabilization of wine Potassium polyaspartate-based products: the revolution in tartrate stabilization of wine Potassium polyaspartate-based products: the revolution in tartrate stabilization of wine
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Tartrate stabilization is an important phase of winemaking process. The presence of tartrate crystals in bottle is not desired by consumers, so producers need to make this stabilization in a more reliable way.

Among the two possible strategies to achieve the stability, the subtractive and the additive, the latter is surely the most sustainable and respectful of the original wine composition: it consists in adding to wine substances that inhibit formation of crystals.

Based on these considerations, a major European project, Stabiwine, which involved many partners creating interesting synergies between different competences, was born in 2012. In 5 years of research, a new additive was developed, potassium polyaspartate (KPA), a stable polymer of L-aspartic acid, able to totally inhibit the formation of tartrate crystals even in highly unstable wines, without color loses and without effect on wine filterability.

After a long approval process that led to the inclusion of KPA in the list of food additives within the EU, on October 28, 2017, the EC Regulation no. 1961/2017 definitively authorizes the use of potassium polyaspartate (KPA) as oenological practice in the European Union.

The audiovisuals proposed in this item, presented in a module dedicated to this new additive at Enoforum 2017, describe the main strengths of this molecule.

Gianni Triulzi, Enartis R & D Manager, compares the KPA with other stabilizing additives demonstrating their validity but also proposing innovative strategies that exploit the synergies between different stabilizing additives.

Paola Domizio, GESAAF, University of Florence, shows the results of a research aimed at assessing efficiency, thermal stress stability, color interaction and KPA wine effects.

Finally, Ricardo Lopez, University of Zaragoza, illustrates the results of a study to test the influence of three different treatment modes for tartaric stabilization on wine aroma.

The seminars reproduced in these videos were presented at the X edition of Enoforum (Vicenza, Italy, 16-18 May 2017). Seminar sponsored by Enartis

Published on 13/12/2017
Item available in italiano
    • Points of strength of wine tartrate stabilization with colloids and development of Potassium Polyaspartate application on wine
    • Gianni Triulzi, Enartis
    • Potassium Polyaspartate: features and benefits on wine
    • Paola Domizio, GESAAF, UniversitÓ di Firenze
    • Potassium Polyaspartate: wine aroma evaluations
    • Ricardo Lˇpez, Universidad de Zaragoza
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