Determination of pathogenic microorganisms
The main focus of the food business operator's own control with regard to food safety should always be on the exclusion of pathogens and compliance with the corresponding limit values laid down in European and national food law.
With regard to this consumer protection measure, we offer, among other things, tests for the detection and/or counting of the following germs with pathogenic properties:
- Bacillus cereus
- Thermophilic Campylobacter (C. jejuni, C. coli)
- Clostridium perfringens
- Enterohaemorrhagic (EHEC) and Shiga toxin producing (STEC) Escherichia coli
- Listeria monocytogenes
- Staphylococcus aureus
- salmonella enteritidis
- Yersinia enterocolitica
In this context, it is also possible to detect increased antibiotic resistance in certain microorganisms: MRSA (methicillin-resistant Staphylococcus aureus) and ESBL (Extended Spectrum ß-lactamase positive bacteria).
The detection or exclusion of further pathogens is possible on request.
The presence of the abovementioned bacteria in foodstuffs may cause foodborne infections and intoxications in the consumer after consumption of these products:
When food is infected, pathogenic microorganisms enter the gastrointestinal tract with the food, adhere there, multiply and penetrate into the cells. Finally, after an incubation period of varying lengths, they cause symptoms of disease which are based on damage caused by the pathogen itself or on excessive defensive reactions of the human organism.
Health damage caused by toxins produced by pathogenic germs is known as intoxication. Bacterial toxins are often proteins or their building blocks which become active in the intestinal tract. This is also referred to as enterotoxins. Mostly these toxins are already formed in the food during the multiplication of the germs. To trigger the disease, it is sufficient to eat the food containing the toxin, while the absorption of living cells of the pathogen is not absolutely necessary.
For the detection of Salmonella, EHEC/STEC and Listeria monocytogenes a rapid analysis within 24h can be offered on request. The very sensitive analysis is performed using molecular biological methods (PCR), whereby the DNA of the pathogens is detected.