II.3.2.15 Use of filter plates containing zeolites Y-Faujasite to adsorb halonisoles

Definition

Treatment using a filter plate containing zeolites Y-faujasite applied during filtration.

Objectives

a)        To reduce the concentration of haloanisoles responsible for off-flavour in wines, below their sensory perception threshold.

Prescriptions

a)        the treatment should be carried out on clarified wines;

b)       the filter plates should be cleaned and disinfected before filtration;

c)        the application of zeolites Y-faujasite should comply with the prescriptions in the International Oenological Codex.

Recommendation of the OIV:

Admitted