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 |
---|
mg/kg of complete feed with a moisture content of 12 % |
---|
Category of nutritional additives. Functional group: amino acids, their salts and analogues. |
3c411 | - | L-threonine | Additive composition:Powder with a minimum of 98 %L-threonine and a maximum moisture content of 1 % | All species | - | - | - | 1.L-threonine may be placed on the market and used as an additive consisting of a preparation.2.L-threonine may be used via water for drinking.3.The labelling of the additive shall indicate the moisture content.4.The endotoxin content of the additive and its dusting potential shall ensure a maximal endotoxin exposure of 1600 IU endotoxins/m3 air.5.The labelling of the additive and premixtures shall indicate the following:"The supplementation with L-threonine, in particular via water for drinking, should take into account all essential and conditionally essential amino acids in order to avoid imbalances."6.For users of the additive and premixtures, feed business operators shall establish operational procedures and organisational measures to address the potential risks by inhalation, eye or dermal contact. Where those risks cannot be eliminated or reduced to a minimum by such procedures and measures, the additive and premixtures shall be used with appropriate personal protective equipment, including breathing, skin and eye protection. | 7.7.2031 |
Characterisation of the active substance:L-threonine produced by fermentation with Escherichia coli CGMCC 13325Chemical formula: C4H9NO3CAS Number: 72-19-5. |
Analytical methods:For the determination of L-threonine in the feed additive:- Food Chemical Codex "L-threonine monograph", and
- ion exchange chromatography coupled with post-column derivatisation and optical detection (IEC-VIS/FLD) – EN ISO 17180.
For the determination of threonine in premixtures:- ion exchange chromatography coupled with post-column derivatisation and optical detection (IEC-VIS/FLD) – EN ISO 17180, and
- ion exchange chromatography coupled with post-column derivatisation and optical detection (IEC-VIS), Commission Regulation (EC) No 152/2009 (Annex III, F).
For the determination of threonine in compound feed and feed materials:- ion exchange chromatography coupled with post-column derivatisation and optical detection (IEC-VIS): Commission Regulation (EC) No 152/2009 (Annex III, F).
For the determination of threonine in water:- ion exchange chromatography coupled with post-column derivatisation and optical detection (IEC-VIS/FLD).
|