<i>Leuconostoc</i> <i>mesenteroides</i> Strains Isolated from Carrots Show Probiotic Features
Lactic acid bacteria (LAB) share several beneficial effects on human organisms, such as bioactive metabolites’ release, pathogens’ competition and immune stimulation. This study aimed at determining the probiotic potential of autochthonous lactic acid bacteria isolated from carrots. In particular, t...
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| Autores principales: | , , , , , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/1a88840b9227472fad6e4a123050011a |
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| Sumario: | Lactic acid bacteria (LAB) share several beneficial effects on human organisms, such as bioactive metabolites’ release, pathogens’ competition and immune stimulation. This study aimed at determining the probiotic potential of autochthonous lactic acid bacteria isolated from carrots. In particular, the work reported the characterization at the species level of four LAB strains deriving from carrots harvested in Fucino highland, Abruzzo (Italy). Ribosomal 16S DNA analysis allowed identification of three strains belonging to <i>Leuconostoc</i> <i>mesenteroides</i> and a <i>Weissella</i> <i>soli</i> strain. In vitro and in vivo assays were performed to investigate the probiotic potential of the different isolates. Among them, <i>L.</i> <i>mesenteroides</i> C2 and <i>L.</i> <i>mesenteroides</i> C7 showed high survival percentages under in vitro simulated gastro-intestinal conditions, antibiotic susceptibly and the ability to inhibit in vitro growth against <i>Salmonella</i> <i>enterica</i> serovar <i>Typhimurium</i>, <i>Listeria</i> <i>monocytogenes</i>, <i>Pseudomonas</i> <i>aeruginosa</i> and <i>Staphylococcus</i> <i>aureus</i> pathogens. In parallel, the simple model <i>Caenorhabditis</i> <i>elegans</i> was used for in vivo screenings. <i>L.</i> <i>mesenteroides</i> C2 and <i>L.</i> <i>mesenteroides</i> C7 strains significantly induced pro-longevity effects, protection from pathogens’ infection and innate immunity stimulation. Overall, these results showed that some autochthonous LAB from vegetables such as carrots have functional features to be considered as novel probiotic candidates. |
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