Retrospective survey of unauthorized genetically modified bacteria harbouring antimicrobial resistance genes in feed additive vitamin B2 commercialized in Belgium: Challenges and solutions

Last updated on 1-12-2021 by Jill Alexandre

Public Access


Peer reviewed scientific article



In Belgium, an official control plan was established in 2016 to detect the potential presence of an unauthorized genetically modified (GM) Bacillus subtilis RASFF2014.1249 strain in commercialized feed additive vitamin B2 products. To this end, two real-time PCR markers specific to this unauthorized genetically modified microorganism (GMM), named UGMVit-B2 and 558, were used. In the present study, the first four-year results from 67 feed additive vitamin B2 samples from the official control are presented. It includes 5 samples positive for real-time PCR methods specific to the unauthorized …

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