International Code of Oenological Practices

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Treatment with glutathione

II.3.4.18 Treatment with glutathione


  • Glutathione: Additive


Addition of glutathione to wine.


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;



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: