News

04.06.2025 - Foods

04/06/2025 - Salmonella and Listeria show remarkable adaptability

Recent research confirms that certain microorganisms, such as Salmonella and Listeria, are capable of adapting to different environmental conditions—even when they have been treated with physical-chemical methods for germ reduction. Methods such as heat exposure, UV light, microwaves, or organic acids, which are used within the framework of the so-called “hurdle technology”, generally provide effective barriers against microbial contamination. However, in individual cases, certain germs may overcome these hurdles.

A study by Akritidou et al. (2023) demonstrated through an artificial gut model that certain pathogenic microorganisms can develop increased metabolic stress tolerance. This could explain why they survive certain hygiene measures.

To ensure food safety, regular microbiological testing of end products is recommended, especially with regard to relevant germs such as Salmonella and Listeria.

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Sources/Notes:

Akritidou T, Akkermans S, Smet C, de Mey F, Van Impe JFM. Influence of Hurdle Technology on Foodborne Pathogen Survival in the Human Gastrointestinal Tract. Microorganisms. 2023 Feb 6;11(2):405. doi: 10.3390/microorganisms11020405. PMID: 36838370; PMCID: PMC9960521; accessed 02.06.25

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