Dyrefor

prNS-EN 17697:2021 - FORSLAG — Dyrefôr: Metoder for prøvetaking og analyse — PFGE-typing av laktobasiller, pediokikker, enterokokker og basiller i dyrefôr
Emner: Dyrefor
Komité: CEN/TC 327 (Animal feeding stuffs - Methods of sampling and analysis)
Opprinnelse: SN
Sluttdato: 14. okt 2021
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This document defines a Pulsed Field Gel Electrophoresis (PFGE) methodology for the identification of authorized probiotic Lactobacillus, Pediococcus, Enterococcus and Bacillus strains. The method can be applied to purified colonies obtained from cultured premixtures and feeds, in order to verify the presence of strains used as feed additives in declared concentrations, even against eventual microbial background resulting from nonsterile matrices.