3c305 | — | L-methionine | Additive compositionL-methionine with a purity of at least 98,5 %Characterisation of the active substanceL-methionine ((2S)-2-amino-4-(methylthio) butanoic acid) produced by fermentation with Escherichia coli (KCCM 11252P and KCCM 11340P)Chemical formula: C5H11NO2SCAS number: 63-68-3Analytical methodFor the identification of L-methionine in the feed additive: infrared absorption and optical rotation — FCC monographs methods.For the quantification of methionine in the feed additive and premixtures containing more than 10 % of methionine: ion exchange chromatography coupled with post-column derivatisation and photometric or fluorescence detection (HPLC-VIS/FD) — ISO/DIS 17180.For the determination of methionine in premixtures containing less than 10 % of methionine, compound feed, feed materials and water: ion exchange chromatography coupled with post-column derivatisation and photometric detection (HPLC/VIS) — Commission Regulation (EC) No 152/2009 (Annex III, F). | All species | — | | | 1.L-methionine can be also used via water for drinking.2.Declarations to be made on the labelling of the additive and premixtures:"If the additive is administered via water for drinking, excess protein should be avoided."3.Where voluntary declaration of the additive is made on the labelling of feed materials and compound feed, the following shall be included:- name and identification number of the additive,
- added amount of the additive.
| 26 August 2024 |