Studying the effect of oxygen availability and matrix structure on population density and inter-strain interactions of Listeria monocytogenes in different dairy model systems

Gkerekou, Maria; Adam, Lamprini A.; Papakostas, Georgios K.; Skandamis, Panagiotis

doi:10.1016/j.foodres.2022.111118

Cited by 2 publications

(2 citation statements)

References 62 publications

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“…Regarding the safety aspects, according to the EU regulation with a Community Directive [5], Camembert cheese is included in the ready-to-eat (RTE) food category, with a potential growth risk of Listeria monocytogenes [6]. This pathogen can also adhere to food processing surfaces forming biofilms, so its occurrence in the processing environment together with flawed hygiene practices could cause post-processing contamination of Camembert [7]. Therefore, it is reasonable to believe that the application of technological sanitization processes after packaging could guarantee the safety of these types of products.…”

Section: Introductionmentioning

confidence: 99%

Untargeted Lipidomics and Chemometric Tools for the Characterization and Discrimination of Irradiated Camembert Cheese Analyzed by UHPLC-Q-Orbitrap-MS

Tomaiuolo

Nardelli

Mentana

et al. 2023

Foods

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In this work, an investigation using UHPLC-Q-Orbitrap-MS and multivariate statistics was conducted to obtain the lipid fingerprint of Camembert cheese and to explore its correlated variation with respect to X-ray irradiation treatment. A total of 479 lipids, categorized into 16 different lipid subclasses, were measured. Furthermore, the identification of oxidized lipids was carried out to better understand the possible phenomena of lipid oxidation related to this technological process. The results confirm that the lipidomic approach adopted is effective in implementing the knowledge of the effects of X-ray irradiation on food and evaluating its safety aspects. Furthermore, Partial Least Squares-Discriminant Analysis (PLS-DA) and Linear Discriminant Analysis (LDA) were applied showing high discriminating ability with excellent values of accuracy, specificity and sensitivity. Through the PLS-DA and LDA models, it was possible to select 40 and 24 lipids, respectively, including 3 ceramides (Cer), 1 hexosyl ceramide (HexCer), 1 lysophosphatidylcholine (LPC), 1 lysophosphatidylethanolamine (LPE), 3 phosphatidic acids (PA), 4 phosphatidylcholines (PC), 10 phosphatidylethanolamines (PE), 5 phosphatidylinositols (PI), 2 phosphatidylserines (PS), 3 diacylglycerols (DG) and 9 oxidized triacylglycerols (OxTG) as potential markers of treatment useful in food safety control plans.

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Section: Introductionmentioning

confidence: 99%

Untargeted Lipidomics and Chemometric Tools for the Characterization and Discrimination of Irradiated Camembert Cheese Analyzed by UHPLC-Q-Orbitrap-MS

Tomaiuolo

Nardelli

Mentana

et al. 2023

Foods

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“…Infections in individuals have been shown to cause acute symptoms such as headaches, vomiting, diarrhoea, severe fever and even death, as indicated by statistical data (Bland et al 2022;Koopmans et al 2023). Worse than that, numerous studies have shown that the hostile environment hardly influences the colonisation and growth of L. monocytogenes, which leads to its continuous survival at low temperature conditions during storage of dairy products storage (Castro et al 2017;Gkerekou et al 2023). Developing technologies for on-site monitoring of L. monocytogenes is crucial for ensuring food safety.…”

Section: Introductionmentioning

confidence: 99%

On‐site rapid detection of Listeria monocytogenes in dairy products using smartphone‐integrated device‐assisted ratiometric fluorescent sensors

Li,

Ren,

Jiao

et al. 2024

Int J of Dairy Tech

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The contamination of Listeria monocytogenes (L. monocytogenes) in dairy products poses a significant risk to human health. It is urgent to develop on‐site rapid strategy to reduce associated threats. We employed carbon dots (CDs) and silicon nanoparticles (SiNPs) as energy donors and acceptors respectively. The CDs and SiNPs were functionalised with vancomycin and aptamers correspondingly, leading to the establishment of ratiometric fluorescent sensor. With a portable smartphone‐integrated device, the ratios of blue/green values from the colour images depended on L. monocytogenes concentrations for quantification. The sensors were demonstrated for monitoring L. monocytogenes in dairy products within 30 min.

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Studying the effect of oxygen availability and matrix structure on population density and inter-strain interactions of Listeria monocytogenes in different dairy model systems

Cited by 2 publications

References 62 publications

Untargeted Lipidomics and Chemometric Tools for the Characterization and Discrimination of Irradiated Camembert Cheese Analyzed by UHPLC-Q-Orbitrap-MS

Untargeted Lipidomics and Chemometric Tools for the Characterization and Discrimination of Irradiated Camembert Cheese Analyzed by UHPLC-Q-Orbitrap-MS

On‐site rapid detection of Listeria monocytogenes in dairy products using smartphone‐integrated device‐assisted ratiometric fluorescent sensors

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