Antibacterial activity of plant extracts against Listeria monocytogenes isolated from ready-to-eat salads
| Autor: | Éva Laslo, Éva György, E. Csató |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Carrot juice
food.ingredient Ready to eat medicine.disease_cause Food processing and manufacture 03 medical and health sciences 0404 agricultural biotechnology food Listeria monocytogenes medicine Agar Food science essential oils 0303 health sciences biology 030306 microbiology SAGE food and beverages 04 agricultural and veterinary sciences General Medicine TP368-456 biology.organism_classification Isolation (microbiology) 040401 food science fresh vegetable juices Listeria ready-to-eat salad Antibacterial activity |
| Zdroj: | Acta Universitatis Sapientiae: Alimentaria, Vol 13, Iss 1, Pp 131-143 (2020) |
| ISSN: | 2066-7744 |
| Popis: | Ready-to-eat salads are becoming more and more popular. However, due to their ingredients, they represent a suitable growth environment for different microbes. In the prevention of foodborne diseases, hygienic food preparation and appropriate storage conditions are very important. During this study, ten different ready-to-eat salads were analysed for the presence of Listeria monocytogenes. Five different selective agar mediums were used for the enumeration and isolation of Listeria monocytogenes. The isolated bacterial strains were subjected to morphological and biochemical confirmation tests. The antibacterial effects of five different freshly squeezed vegetable juices (carrots, celery, beets, horseradish, and onions) and of five essential oils (dill, thyme, oregano, lemongrass, and sage) were determined against Listeria monocytogenes, Listeria innocua, and L. monocytogenes strains isolated from ready-to-eat salads. Based on the results obtained from fresh vegetable juices, carrot juice exerted the highest antibacterial effect, while the others showed no or slight inhibitory effect (horseradish, beets, onions) against Listeria species. Among the essential oils, thyme, lemongrass, and oregano showed the strongest antibacterial effect against the studied Listeria species. |
| Databáze: | OpenAIRE |
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