International Code of Oenological Practices

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Treatment using chitin-glucan

II.3.4.17 Treatment using chitin-glucan

 

Classification:

  • Chitin-Glucan: processing aid

Definition:

Addition of chitin-glucan of fungal origin to wines

Objectives:

a)        To reduce heavy metal content, notably iron, lead, cadmium, copper,

b)       To prevent iron haze, copper haze,

c)        To reduce possible contaminants, especially ochratoxin A.

Prescriptions:

a)        The doses to be used are determined after preliminary testing. The maximum dose used must not exceed:

  • 100 g/hl for the objectives a) and b)
  • 500 g/hl for the objective c)

b)       Sediments are eliminated by physical procedures.

c)        Chitin-glucan complex of fungal origin may be used alone or together with other admitted products.

d)       Chitin-glucan complex must comply with the requirements of the International Oenological Codex.

Recommendation of the OIV:

Admitted