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Antibacterial activity of plant extracts against Listeria monocytogenes isolated from ready-to-eat salads
- Source :
- Acta Universitatis Sapientiae: Alimentaria, Vol 13, Iss 1, Pp 131-143 (2020)
- Publication Year :
- 2020
- Publisher :
- Sciendo, 2020.
-
Abstract
- 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.
- Subjects :
- 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
Subjects
Details
- Language :
- English
- ISSN :
- 20667744
- Volume :
- 13
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Acta Universitatis Sapientiae: Alimentaria
- Accession number :
- edsair.doi.dedup.....cdb2b698ffcdd3a6943ebc17b8a9a1e8