Listeria monocytogenes – Danger for health safety vegetable production

Kljujev, Igor; Raičević, Vera; Jovičić-Petrović, Jelena; Vujović, Bojana; Mirković, Milica; Rothballer, Michael

doi:10.1016/j.micpath.2018.04.034

Cited by 35 publications

(33 citation statements)

References 29 publications

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“…The optical density method was used to determine the antibacterial activity of the membranes, according to Gomes et al 23 As E. coli infections are common and Listeria monocytogenes can harm vegetables, 24 E. coli and L. monocytogenes were chosen as representative Gram-negative and Gram-positive bacterial strains respectively. E. coli and L. monocytogenes solutions were prepared at a concentration of 1.0 × 10 5 CFU mL −1 .…”

Section: Antibacterial Activity Of Microcapsulesmentioning

confidence: 99%

Preparation and characterization of β‐cyclodextrin–oregano essential oil microcapsule and its effect on storage behavior of purple yam

Huang

Yin

et al. 2020

J Sci Food Agric

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BACKGROUND Natural plant essential oils have antimicrobial properties; however, essential oils are difficult to maintain in a system because of their volatile nature. First, we prepared microcapsules from β‐cyclodextrin and oregano essential oil and characterized their properties. Second, the effect of microcapsules on the preservation of freshly cut purple yam was studied using an edible coating technique. Purple yams immersed in distilled water were used as control, and their characteristics were compared with yams coated with citric acid, citric acid + sodium alginate, and citric acid + sodium alginate + β‐cyclodextrin–oregano essential oil microcapsules (CA–SA–MC) and stored at 4 °C for 5 days. RESULTS Microcapsules of oregano essential oil and β‐cyclodextrin solution were successfully prepared via the inclusion method, with an optimal encapsulation efficiency of 55.14%. Scanning electron microscopy, Fourier transform infrared spectroscopy, and thermogravimetric analysis showed strong bonds between β‐cyclodextrin and oregano essential oil. All edible coatings, particularly CA–SA–MC, significantly (P ≤ 0.05) maintained firmness, total soluble solids, ascorbic acid content, and anthocyanin content compared with control treatment. This treatment also prevented browning and extended the shelf life of purple yam. CONCLUSION Oregano essential oil can be successfully encapsulated into cyclodextrin microcapsules. It has a great impact on the shelf life extension of purple yam and could be successfully applied to other fresh produce. © 2020 Society of Chemical Industry

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Section: Antibacterial Activity Of Microcapsulesmentioning

confidence: 99%

Preparation and characterization of β‐cyclodextrin–oregano essential oil microcapsule and its effect on storage behavior of purple yam

Huang

Yin

et al. 2020

J Sci Food Agric

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“…Organic fertilizers can also introduce a range of human and animal pathogens into soil [ 82 ]. For instance, animal manures were found to increase the abundance of Escherichia coli O157:H7 [ 83 , 84 ] or Listeria monocytogenes in cultivated vegetables [ 85 ]. Such findings would imply a potential threat to human health.…”

Section: Discussionmentioning

confidence: 99%

Microbial Communities in Soils and Endosphere of Solanum tuberosum L. and their Response to Long-Term Fertilization

et al. 2020

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An understanding of how fertilization influences endophytes is crucial for sustainable agriculture, since the manipulation of the plant microbiome could affect plant fitness and productivity. This study was focused on the response of microbial communities in the soil and tubers to the regular application of manure (MF; 330 kg N/ha), sewage sludge (SF; 330 and SF3x; 990 kg N/ha), and chemical fertilizer (NPK; 330-90-300 kg N-P-K/ha). Unfertilized soil was used as a control (CF), and the experiment was set up at two distinct sites. All fertilization treatments significantly altered the prokaryotic and fungal communities in soil, whereas the influence of fertilization on the community of endophytes differed for each site. At the site with cambisol, prokaryotic and fungal endophytes were significantly shifted by MF and SF3 treatments. At the site with chernozem, neither the prokaryotic nor fungal endophytic communities were significantly associated with fertilization treatments. Fertilization significantly increased the relative abundance of the plant-beneficial bacteria Stenotrophomonas, Sphingomonas and the arbuscular mycorrhizal fungi. In tubers, the relative abundance of Fusarium was lower in MF-treated soil compared to CF. Although fertilization treatments clearly influenced the soil and endophytic community structure, we did not find any indication of human pathogens being transmitted into tubers via organic fertilizers.

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“…Listeria monocytogenes appears to be a soil saprophyte (Freitag, Port, & Miner, 2009), which contains an extensive core genome, containing (as well as the accessory genome) a variety of genes involved in transport proteins and transcriptional regulators, which is compatible with a ubiquitous lifestyle (Vivant, Garmyn, & Piveteau, 2013). In fact, niches present in the soil are efficiently colonized by L. monocytogenes, including the rhizosphere, even though endophytic colonization has not been documented (Kljujev et al, 2018;Kutter, Hartmann, & Schmid, 2006). How the L. monocytogenes equipment for its intracellular lifestyle influences colonization of soil and plant-associated protozoa, invertebrate animals, and arthropods is an open field of research (Biswas, Raoult, & Rolain, 2008;Vivant et al, 2013).…”

Section: Ubiquity: Listeria Monocytogenes Global Ecologymentioning

confidence: 99%

Ecogenetics of antibiotic resistance in Listeria monocytogenes

Baquero

Lanza

Duval

et al. 2020

Molecular Microbiology

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The acquisition process of antibiotic resistance in an otherwise susceptible organism is shaped by the ecology of the species. Unlike other relevant human pathogens, Listeria monocytogenes has maintained a high rate of susceptibility to the antibiotics used for decades to treat human and animal infections. However, L. monocytogenes can acquire antibiotic resistance genes from other organisms’ plasmids and conjugative transposons. Ecological factors could account for its susceptibility. L. monocytogenes is ubiquitous in nature, most frequently including reservoirs unexposed to antibiotics, including intracellular sanctuaries. L. monocytogenes has a remarkably closed genome, reflecting limited community interactions, small population sizes and high niche specialization. The L. monocytogenes species is divided into variants that are specialized in small specific niches, which reduces the possibility of coexistence with potential donors of antibiotic resistance. Interactions with potential donors are also hampered by interspecies antagonism. However, occasional increases in population sizes (and thus the possibility of acquiring antibiotic resistance) can derive from selection of the species based on intrinsic or acquired resistance to antibiotics, biocides, heavy metals or by a natural tolerance to extreme conditions. High‐quality surveillance of the emergence of resistance to the key drugs used in primary therapy is mandatory.

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Listeria monocytogenes – Danger for health safety vegetable production

Cited by 35 publications

References 29 publications

Preparation and characterization of β‐cyclodextrin–oregano essential oil microcapsule and its effect on storage behavior of purple yam

Preparation and characterization of β‐cyclodextrin–oregano essential oil microcapsule and its effect on storage behavior of purple yam

Microbial Communities in Soils and Endosphere of Solanum tuberosum L. and their Response to Long-Term Fertilization

Ecogenetics of antibiotic resistance in Listeria monocytogenes

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