The incidence and level of Listeria monocytogenes contamination of food sources at primary production and initial processing

1996 ◽  
Vol 81 (6) ◽  
pp. 641-650 ◽  
Author(s):  
D.R. Fenlon ◽  
J. Wilson ◽  
W. Donachie
Keyword(s):  
Listeria Monocytogenes ◽  
Primary Production ◽  
Food Sources ◽  
Initial Processing

scholarly journals EVALUATION OF LISTERIA MONOCYTOGENES IN RAW BUFFALO MILK DURING PRIMARY PRODUCTION

2009 ◽  
Vol 1 (4) ◽  
pp. 49 ◽  
Author(s):  
N. Murru ◽  
M. Barile ◽  
M. Tozzi ◽  
C. Ceres ◽  
G. Aprea ◽  
...  
Keyword(s):  
Listeria Monocytogenes ◽  
Primary Production ◽  
Buffalo Milk

Diet components in the food of Antarctic ascidians living at low levels of primary production

2004 ◽  
Vol 16 (2) ◽  
pp. 123-128 ◽  
Author(s):  
MARCOS TATIÁN ◽  
RICARDO SAHADE ◽  
GRACIELA B. ESNAL
Keyword(s):  
Primary Production ◽  
Stomach Contents ◽  
Food Sources ◽  
Potter Cove ◽  
Mean Values ◽  
Faecal Pellets ◽  
Wide Range ◽  
The Rich ◽  
Wind Mixing ◽  
The Antarctic

Coupling between pelagic and benthic systems has been described in numerous shallow water communities. In Potter Cove, where pelagic primary production is low (not only during the Antarctic winter but also during the summer), the rich benthic community present there must depend on other food sources than phytoplankton. Over a year-round period we determined the abundance of the different seston particles which constituted the stomach contents of the Antarctic ascidian Cnemidocarpa verrucosa (Lesson, 1830) at Potter Cove. Stomach repletion was highest in November and lowest in June. Ascidians took in a wide range of particles from large detritus (macroalgal debris and faecal pellets) to minute particles < 5 μm. Large detritus and minute particles together represent the main percentage of contents throughout the year (mean 91%). Diatoms were a low percentage (mean 4.5%). Unidentified flagellates, dinoflagellates and coccolithophorids were scarce, with mean values lower than 4%. Among diatoms benthic species were more abundant in summer and pelagic ones prevailed from March to November. Resuspension of benthic material due to wind mixing and the input of allochthonous particles by currents are important mechanisms that ensure food for ascidians and the community of suspension feeders in Potter Cove.

scholarly journals Listeria monocytogenes dissemination in farming and primary production: Sources, shedding and control measures

Food Control ◽  
2021 ◽  
Vol 120 ◽  
pp. 107540
Author(s):  
C. Rodriguez ◽  
B. Taminiau ◽  
E. García-Fuentes ◽  
G. Daube ◽  
N. Korsak
Keyword(s):  
Listeria Monocytogenes ◽  
Primary Production ◽  
Control Measures ◽  
And Control

scholarly journals Listeria monocytogenes and diet during pregnancy; balancing nutrient intake adequacy v. adverse pregnancy outcomes

2012 ◽  
Vol 15 (12) ◽  
pp. 2202-2209 ◽  
Author(s):  
Kristine B Pezdirc ◽  
Alexis J Hure ◽  
Michelle L Blumfield ◽  
Clare E Collins
Keyword(s):  
Listeria Monocytogenes ◽  
Reference Values ◽  
Pregnancy Outcomes ◽  
Adverse Pregnancy Outcomes ◽  
Food Sources ◽  
Nutrient Intakes ◽  
Frequent Consumption ◽  
Nutrient Reference Values ◽  
Adverse Pregnancy ◽  
The Impact

AbstractObjectiveTo evaluate the impact of adherence to public health recommendations on Listeria monocytogenes food safety to limit exposure to potential food sources on micronutrient intakes of pregnant women and whether more frequent consumption of ‘high-risk’ foods increases risk for adverse pregnancy outcomes.DesignA cohort study in women assessing Listeria exposure from an FFQ based on consumption of potential Listeria-containing food sources, the Listeria Food Exposure Score (LFES). Pregnancy status was defined as pregnant, trying to conceive, had a baby within the previous 12 months, or other. Nutrient intakes were compared with Nutrient Reference Values and self-reported pregnancy outcome history three years later.SettingAustralia.SubjectsWomen aged 25–30 years (n 7486) participating in the Australian Longitudinal Study on Women's Health.ResultsThere were weak positive correlations (r = 0·13–0·37, P < 0·001) between LFES and all nutrients, with fibre, folate, Fe and vitamin E intakes consistently below the Nutrient Reference Values in every quintile of LFES. Women in the highest quintile of LFES reported 19 % more miscarriages (rate ratio = 1·19; 95 % CI 1·02, 1·38) than those in the lowest quintile, after adjusting for important confounding factors.ConclusionsMore frequent consumption of foods potentially containing L. monocytogenes is associated with higher nutrient intakes, but an increased risk of miscarriage. L. monocytogenes pregnancy recommendations require review and should include the list of ‘risky’ food items in addition to low-risk alternatives that would adequately replace nutrient intakes which may be reduced through avoidance strategies.

Tracing the food sources of isolated strains of Listeria monocytogenes through fatty acid profiles analysis

Food Control ◽  
2010 ◽  
Vol 21 (8) ◽  
pp. 1092-1098 ◽  
Author(s):  
Ailing Guo ◽  
Ting Liu ◽  
Ji Xie ◽  
Hongjiang Wang ◽  
Hong Yang ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Listeria Monocytogenes ◽  
Food Sources ◽  
Fatty Acid Profiles

scholarly journals The biofilm formation ability of Listeria monocytogenes isolated from meat, poultry, fish and processing plant environments is related to serotype and pathogenic profile of the strains

2012 ◽  
Vol 2 (1) ◽  
pp. 12 ◽  
Author(s):  
Domenico Meloni ◽  
Roberta Mazza ◽  
Francesca Piras ◽  
Sonia Lamon ◽  
Simonetta Gianna Consolati ◽  
...  
Keyword(s):  
Listeria Monocytogenes ◽  
Biofilm Formation ◽  
Target Genes ◽  
Microtiter Plate ◽  
Food Sources ◽  
Processing Plant ◽  
Pathogenic Potential ◽  
Microtiter Plate Assay ◽  
Processing Plants

In the present study, the relationships between serotype, pathogenic profile and <em>in vitro</em> biofilm formation of 106 <em>Listeria monocytogenes</em> strains, having no epidemiological correlation and isolated from different environmental and food sources, were analyzed. The quantitative assessment of the <em>in vitro</em> biofilm formation was carried out by using a microtiter plate assay with spectrophotometric reading (OD620). The isolates were also submitted to serogrouping using the target genes <em>lmo0737</em>, <em>lmo1118, ORF2819, ORF2110, prs</em>, and to the evaluation of the presence of the following virulence genes: <em>prfA, hlyA, rrn, inlA, inlB, iap, plcA, plcB, actA</em> and <em>mpl</em>, by multiplex PCRs. The 62% of the strains showed weak or moderate <em>in vitro</em> ability in biofilm formation, in particular serotypes 1/2b and 4b, frequently associated with sporadic or epidemic listeriosis cases. The 25% of these isolates showed polymorphism for the <em>actA</em> gene, producing a fragment of 268-bp instead of the expected 385-bp. The deletion of nucleotides in this gene seems to be related to enhanced virulence properties among these strains. Strains belonging to serotypes associated with human infections and characterized by pathogenic potential are capable to persist within the processing plants forming biofilm.

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