BfR warns consumers to wash packaged sprouts and saladsThe German Federal Institute for Risk Assessment (BfR) has issued an Opinion recommending that consumers wash packaged sprouts and salads thoroughly before use because of the potential for high levels of microbial contamination.
The advice follows studies into the microbial loads of sprouts and salads conducted by BfR in 2008 and 2009. The 2008 study looked at the prevalence of Listeria monocytogenes in 133 salad mixtures. The pathogen was detected in 5% of the samples tested. In 2009, the Institute analysed 59 samples of fresh packaged sprouts and shoots on retail sale. The results showed considerable increases in microbial populations during storage with high numbers of bacteria being present by end of shelf life.
The Opinion suggests a number of reasons for the high microbial counts, including the release of cell sap from cut surfaces and high humidity inside packaging. The initial contamination is thought to originate from fertiliser, irrigation water and/or poor hygiene during processing.
BfR concludes that the incidence of human illness from consuming contaminated vegetables is much lower than that linked to foods derived from animals such as poultry and pigs. Nevertheless, the advice to wash sprouts and salads thoroughly is thought appropriate.
The full report (in German) can be found at the link below.
http://www.bfr.bund.de/cm/208/hohe_keimbelastung_in_sprossen_und_kuechenfertigen_salatmischungen.pdf
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