ANNEX

Identification number of the additive

Name of the holder of authorisation

Additive

Composition, chemical formula, description, analytical method

Species or category of animal

Maximum age

Minimum content

Maximum content

Other provisions

End of period of authorisation

Units of activity/kg of complete feedingstuff with a moisture content of 12 %

Category of zootechnical additives. Functional group: digestibility enhancers

4a22

Adisseo France S.A.S.

Endo-1,4-beta-xylanase EC 3.2.1.8

and

Endo-1,3(4)-beta-glucanase EC 3.2.1.6

Additive composition

Preparation of endo-1,4-beta-xylanase (EC 3.2.1.8) and endo-1,3(4)-beta-glucanase (EC 3.2.1.6) produced by Talaromyces versatilis sp. nov. IMI CC 378536 and Talaromyces versatilis sp. nov. DSM 26702 having a minimum activity of:

  • solid form: endo-1,4-beta-xylanase 22 000 VU4/g and endo-1,3(4)-beta-glucanase 15 200 VU/g;

  • liquid form: endo-1,4-beta-xylanase activity of 5 500 VU/ml and endo-1,3(4)-beta-glucanase 3 800 VU/ml.

Characterisation of the active substance

Endo-1,4-beta-xylanase (EC 3.2.1.8) and endo-1,3(4)-beta-glucanase (EC 3.2.1.6) produced by Talaromyces versatilis sp. nov. IMI CC 378536 and Talaromyces versatilis sp. nov. DSM 26702.

Analytical method5

For the quantification of endo-1,4-beta-xylanase activity:

  • viscosimetric method based on decrease in viscosity produced by action of endo-1,4-beta-xylanase on the xylan containing substrate (wheat arabinoxylan).

For the quantification of endo-1,3(4)-beta-glucanase activity:

  • viscosimetric method based on decrease in viscosity produced by action of endo-1,3(4)-beta-glucanase on the glucan substrate barley betaglucan at pH = 5,5 and 30 °C.

Turkeys for fattening

Turkeys reared for breading

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endo-1,4-beta-xylanase 1 100 VU

endo-1,3(4)-beta-glucanase 760 VU

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1.

In the directions for use of the additive and premixture, indicate the storage conditions and stability to pelleting.

2.

For safety: breathing protection, glasses and gloves shall be used during handling.

31 December 2025

1 VU (viscosimetry unit) is the amount of enzyme which hydrolyses the substrate (barley betaglucan and wheat arabinoxylan, respectively), reducing the viscosity of the solution, to give a change in relative fluidity of 1 (dimensionless unit)/min at 30 °C and pH 5,5.

Details of the analytical methods are available at the following address of the Reference Laboratory: https://ec.europa.eu/jrc/en/eurl/feed-additives/evaluation-reports