ANTIBACTERIAL AND ANTIVIRAL ACTIVITIES OF STINGING NETTLE (URTICA DIOICA L.) LEAF EXTRACT ON NOROVIRUS AND CAMPYLOBACTER JEJUNI AS FOODBORNE PATHOGENS

Autor: Hanife Banu Aydın, Serol Korkmaz, Burcu Irem Omurtag Korkmaz
Přispěvatelé: Aydin H. B., Korkmaz S., OMURTAG KORKMAZ B. İ.
Rok vydání: 2023
Předmět:
Zdroj: Journal of microbiology, biotechnology and food sciences. :e9768
ISSN: 1338-5178
DOI: 10.55251/jmbfs.9768
Popis: Research background. The cytotoxicity on various vital cell lines and the activity on foodborne pathogens (murine norovirus 1 as a norovirus surrogate and Campylobacter jejuni) of methanolic Urtica dioica L. leaf extract (UDE) were studied. Experimental approach. The cytotoxic concentration of 50% (CC50) was measured by the linearity between UDE concentrations and cell viability. Antibacterial effects on C. jejuni were analyzed by the broth microdilution method with a spectrophotometer. The virucidal and antiviral activities of UDE were determined by the virus titration method on the host cell infectivity and expressed as the tissue cell infective dose of 50% using the method of Spearman–Karber. Results and conclusions. The CC50 of UDE was determined on macrophage as the virus host cell. MIC and MBC of UDE were determined as 5 mg/ml and 20 mg/ml for both C. jejuni isolated from poultry meat and the standard strain. UDE inhibited MNV-1 on three pathways of host cell infectivity at approximately the same 50% inhibitory concentration (1.45-1.87 mg/ml). In conclusion, the present study tried to explain in detail the dose-dependent activity of Urtica dioica L. leaf extract on two important foodborne pathogens causing outbreaks worldwide. The results showed that it might be a safe and alternative food additive and supplement candidate at safe concentrations.
Databáze: OpenAIRE