Enterococcal Species Associated with Slovak Raw Goat Milk, Their Safety and Susceptibility to Lantibiotics and Durancin ED26E/7
| Autor: | Valentína Focková, Andrea Lauková, Monika Pogány Simonová |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
safety
medicine.drug_class Antibiotics Bioengineering lcsh:Chemical technology virulence factor Virulence factor bacteriocins enterococcal species lcsh:Chemistry 03 medical and health sciences Bacteriocin medicine Chemical Engineering (miscellaneous) lcsh:TP1-1185 Food science 030304 developmental biology 0303 health sciences biology 030306 microbiology Process Chemistry and Technology Biofilm food and beverages Lantibiotics biochemical phenomena metabolism and nutrition raw goat milk biology.organism_classification Bacterial adhesin lcsh:QD1-999 bacteria Bacteria Enterococcus faecium |
| Zdroj: | Processes, Vol 9, Iss 681, p 681 (2021) Processes Volume 9 Issue 4 |
| ISSN: | 2227-9717 |
| Popis: | Goat milk has become a popular item of human consumption due to its originality. Enterococci are ubiquitous bacteria, and they can also be found in traditional dairy products. This study focuses on the safety of enterococci from Slovak raw goat milk and on their susceptibility to lantibiotic bacteriocins and durancin ED26E/7, which has not previously been studied. Biofilm formation ability in enterococci, virulence factor genes, enzyme production and antibiotic profile were investigated. Samples of raw goat milk (53) were collected from 283 goats in Slovakia. MALDI-TOF mass spectrometry identified three enterococcal species: Enterococcus faecium, E. hirae and E. mundtii, with dominant occurrence of the species E. faecium. Low-grade biofilm formation ability (0.1 ≤ A570 < 1.0) was found in four strains of E. faecium.Gelatinase, hyaluronidase, aggregation substance and enterococcal surface protein genes were absent in these enterococci. Gene efaAfm (adhesin) was detected in five E. faecium strains. However, it was not detected in biofilm-forming strains. Enterococci detected in Slovak raw goat milk were found not to have pathogenic potential four strains even produced high amounts of useful β-galactosidase. The strains were susceptible to lantibiotic bacteriocin treatment and to durancin ED26E/7 as well, which represents original information in dairy production. |
| Databáze: | OpenAIRE |
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