II.3.2.13 Fining using chitin-glucan

Classification:

• chitin-glucan: Processing aid

Definition:

Addition of chitin-glucan of fungal origin for the purpose of fining wines

Objectives:

a)        To reduce turbidity by precipitating particles in suspension

b)       To carry out a treatment to prevent protein haze by the partial precipitation of excess proteinaceous matter.

Prescriptions:

a)        The doses to be used are determined after preliminary testing. The maximum dose used must not exceed 100 g/hl.

b)       Sediments are eliminated by physical procedures.

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

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

Recommendation of the OIV

Admitted