II.3.4.18 Treatment with glutathione

Classification:

• Glutathione: Additive

Definition:

Addition of glutathione to wine.

Objectives:

a)        To protect aromatic substances present in wines (and particularly those of the thiol family) from oxidation, thanks to the antioxidant properties of the product;

b)       to limit the formation of compounds responsible for ageing defects resulting from oxidation;

 

Prescriptions:

a)        The addition of glutathione on storage and/or packaging, including the bottling of wine, is recommended;

b)       the dose used should not exceed 20 mg/L;

c)        the glutathione must be in a reduced form and comply with the prescriptions of the International Oenological Codex.

Recommendation of the OIV:

Admitted