ANNEX I AU.K.AUTHORISED OENOLOGICAL PRACTICES AND PROCESSES.

[F1Appendix 13

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[F2Requirements for the treatment of wines with chitosan derived from Aspergillus niger and for the treatment of wines with chitin-glucan derived from Aspergillus niger] U.K.

Areas of application: U.K.
(a)

reduction in the heavy metal content, particularly iron, lead, cadmium and copper;

(b)

prevention of ferric casse and copper casse;

(c)

reduction of possible contaminants, especially ochratoxin A;

(d)

reduction in the populations of undesirable micro-organisms, in particular Brettanomyces , solely by means of treatment with chitosan.

Requirements: U.K.

  • The dose levels to be used are determined after a qualification test. The maximum dose level used may not exceed:

    • 100 g/hl for applications (a) and (b),

    • 500 g/hl for application (c),

    • 10 g/hl for application (d),

  • sediments are removed using physical processes.]

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