Meat Safety—I Foodborne Pathogens and Other Biological Issues

Nychas, George‐John E.; Panagou, Efstathios Ζ.

doi:10.1016/b978-0-08-100694-8.00017-0

Cited by 23 publications

(12 citation statements)

References 79 publications

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“…Whether we consider the galaxy ensemble or individual galaxy types, the correlation is close to zero, while the covariance is negative for the ETGs and Irs and positive for the LTGs. When we study the variations of the dust mass and the U av on small physical scales (Lianou & et al 2019), we find an anticorrelation between them, indicating that regions with larger U av (or dust temperatures) tend to lower values for the dust mass. For the global scale analyses of the galaxy ensemble, as we are integrating fluxes over a large area for each galaxy, regions with a variety of physical conditions present (temperatures/radiation field intensities, dust grain properties) are averaged, adding to the scatter seen in Fig.…”

Section: Relationsmentioning

confidence: 83%

“…When we investigate the same relation on small physical scales (150pc to 300pc linear sizes), the covariance of the two properties is clearer, i.e. the larger the U av , the smaller the 'QPAH' fraction (Lianou & et al 2019). Interestingly, the overall shape of the relation between the 'QPAH' fraction and U av is reminiscent to what is observed for H II regions in M101 by Gordon et al (2008), where the equivalent widths of the aromatic features are plotted against the ionisation index (defined in Gordon et al 2008), favouring a power law with a constant functional form, and a shape similar to what is seen in the upper panel of Fig.…”

Section: Relationsmentioning

confidence: 94%

“…A simplified version of the dust-SED model was used in Galliano et al (2011, hereafter G11), wherein the HB approach or the THEMIS dust grain model were not included. A comparison between the dust-derived properties adopting either the THEMIS dust grain composition or the amorphous carbon dust grain composition of G11 (i.e., their "AC" model) has been performed in Lianou & et al (2019) and the result of this comparison shows that the derived properties have similar values within the uncertainties. In the current study we adopt the THEMIS dust grain composition.…”

Section: Modeling the Spectral Energy Distributionsmentioning

confidence: 99%

“…The calibration uncertainty assumed inClark et al (2018) is different than that assumed internally in the hierarchical Bayesian dust-SED model (seeTable 1inLianou & et al 2019, for the calibration uncertainties assumed in the dust-SED model). Therefore, we have made the necessary corrections to all bands, so as to use the calibration uncertainties assumed here in the dust-SED model, and not those assumed inClark et al (2018).…”

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confidence: 95%

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Dust properties and star formation of approximately a thousand local galaxies

Lianou

Barmby

Mosenkov

et al. 2019

A&A

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Aims. We derive the dust properties for 753 local galaxies and examine how these relate to some of their physical properties. We present the derived dust emission properties, including model spectral energy distribution (SEDs), star formation rates and stellar masses, as well as their relations. Methods. We model the global dust-SEDs for 753 galaxies, treated statistically as an ensemble within a hierarchical Bayesian dust-SED modeling approach, so as to derive their infrared (IR) emission properties. To create the observed dust-SEDs, we use a multiwavelength set of observations, ranging from near-IR to far-IR / submillimeter wavelengths. The model-derived properties are the dust masses (M dust ), the average interstellar radiation field intensities (U av ), the mass fraction of very small dust grains ('QPAH' fraction), as well as their standard deviations. In addition, we use mid-IR observations to derive star formation rates (SFR) and stellar masses, quantities independent of the dust-SED modeling. Results. We derive distribution functions of the properties for the galaxy ensemble and as a function of galaxy type. The mean value of M dust for the early-type galaxies (ETGs) is lower than that for the late-type and irregular galaxies (LTGs and IRs, respectively), despite ETGs and LTGs having stellar masses spanning across the whole range observed. The U av and 'QPAH' fraction show no difference among different galaxy types. When fixing U av to the Galactic value, the derived 'QPAH' fraction varies across the Galactic value (0.071). The specific SFR increases with galaxy type, while this is not the case for the dust-specific SFR (SFR/M dust ), showing an almost constant star formation efficiency per galaxy type. The galaxy sample is characterised by a tight relation between the dust mass and the stellar mass for the LTGs and Irs, while ETGs scatter around this relation and tend towards smaller dust masses. While the relation indicates that M dust may fundamentally be linked to M , metallicity and U av are the second parameter driving the scatter, which we investigate in a forthcoming work. We use the extended Kennicutt-Schmidt (KS) law to estimate the gas mass and the gas-to-dust mass ratio (GDR). The gas mass derived from the extended KS law is on average ∼20% higher than that derived from the KS law, and a large standard deviation indicates the importance of the average star formation present to regulate star formation and gas supply. The average GDR for the LTGs and Irs is 370, while including the ETGs gives an average of 550.

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Section: Relationsmentioning

confidence: 83%

Section: Relationsmentioning

confidence: 94%

Section: Modeling the Spectral Energy Distributionsmentioning

confidence: 99%

mentioning

confidence: 95%

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Dust properties and star formation of approximately a thousand local galaxies

Lianou

Barmby

Mosenkov

et al. 2019

A&A

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“…As strict procedures exist to ensure quality in the meat industry, the transportation and storage of meat has become a major source of contamination with microbes that harm human health (Kennedy et al 2005 ; Nychas et al 2008 ; Rouger et al 2017 ). Meat and its products carry various microbiological dangers, which significantly increase the risk of infection and death, especially in developing countries (Lianou et al 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Pseudomonas species prevalence, protein analysis, and antibiotic resistance: an evolving public health challenge

et al. 2022

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Psychrotrophic Pseudomonas is one of the significant microbes that lead to putrefaction in chilled meat. One of the biggest problems in the detection of Pseudomonas is that several species are seemingly identical. Currently, antibiotic resistance is one of the most significant challenges facing the world's health and food security. Therefore, this study was designed to apply an accurate technique for eliminating the identification discrepancy of Pseudomonas species and to study their resistance against various antimicrobials. A total of 320 chicken meat specimens were cultivated, and the isolated bacteria’ were phenotypically recognized. Protein analysis was carried out for cultured isolates via Microflex LT. The resistance of Pseudomonas isolates was recorded through Vitek® 2 AST-GN83 cards. Overall, 69 samples were identified as Pseudomonas spp. and included 18 Pseudomonas lundensis (P. lundensis), 16 Pseudomonas fragi (P. fragi), 13 Pseudomonas oryzihabitans (P. oryzihabitans), 10 Pseudomonas stutzeri (P. stutzeri), 5 Pseudomonas fluorescens (P. fluorescens), 4 Pseudomonas putida (P. putida), and 3 Pseudomonas aeruginosa (P. aeruginosa) isolates. Microflex LT identified all Pseudomonas isolates (100%) correctly with a score value ≥ 2.00. PCA positively discriminated the identified isolates into various groups. The antimicrobial resistance levels against Pseudomonas isolates were 81.16% for nitrofurantoin, 71% for ampicillin and ampicillin/sulbactam, 65.22% for cefuroxime and ceftriaxone, 55% for aztreonam, and 49.28% for ciprofloxacin. The susceptibilities were 100% for cefotaxime, 98.55% for ceftazidime, 94.20% for each piperacillin/tazobactam and cefepime, 91.3% for cefazolin. In conclusion, chicken meat was found to be contaminated with different Pseudomonas spp., with high incidence rates of P. lundensis. Microflex LT is a potent tool for distinguishing Pseudomonads at the species level.

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Dilemma and Concepts of Halal-Safe Food

Eldaw,

Ahmed Osman

2023

Halal and Kosher Food

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Meat Safety—I Foodborne Pathogens and Other Biological Issues

Cited by 23 publications

References 79 publications

Dust properties and star formation of approximately a thousand local galaxies

Dust properties and star formation of approximately a thousand local galaxies

Pseudomonas species prevalence, protein analysis, and antibiotic resistance: an evolving public health challenge

Dilemma and Concepts of Halal-Safe Food

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