scholarly journals Prevalence and Distribution of Listeria monocytogenes in Three Commercial Tree Fruit Packinghouses

2021 ◽  
Vol 12 ◽  
Author(s):  
Tobin Simonetti ◽  
Kari Peter ◽  
Yi Chen ◽  
Qing Jin ◽  
Guodong Zhang ◽  
...  
Keyword(s):  
Longitudinal Study ◽  
Listeria Monocytogenes ◽  
Cold Storage ◽  
Activity Levels ◽  
Early Winter ◽  
Water Drainage ◽  
Critical Areas ◽  
Tree Fruit ◽  
Food Contact Surface ◽  
Multiple Tree

A 2-year longitudinal study of three tree fruit packinghouses was conducted to determine the prevalence and distribution of Listeria monocytogenes. Samples were collected from 40 standardized non-food-contact surface locations six different times over two 11-month production seasons. Of the 1,437 samples collected, the overall prevalence of L. monocytogenes over the course of the study was 17.5%. Overall prevalence did not differ significantly (p > 0.05) between each year. However, values varied significantly (p ≤ 0.05) within each production season following packing activity levels; increasing in the fall, peaking in early winter, and then decreasing through spring. L. monocytogenes was most often found in the packing line areas, where moisture and fruit debris were commonly observed and less often in dry cold storage and packaging areas. Persistent contamination was attributed to the inability of water drainage systems to prevent moisture accumulation on floors and equipment during peak production times and uncontrolled employee and equipment traffic throughout the facility. This is the first multiyear longitudinal surveillance study to compare L. monocytogenes prevalence at standardized sample sites common to multiple tree fruit packinghouses. Recommendations based on our results will help packinghouse operators to identify critical areas for inclusion in their L. monocytogenes environmental monitoring programs.

A Different Point of View: The Evaluation of Motor Imagery Perspectives in Patients With Sensorimotor Impairments in A Longitudinal Study

2020 ◽  
Author(s):  
Szabina Gäumann ◽  
Rahel Sarah Gerber ◽  
Zorica Suica ◽  
Corina Schuster-Amft
Keyword(s):  
Clinical Trial ◽  
Longitudinal Study ◽  
Mental Rotation ◽  
Motor Imagery ◽  
Point Of View ◽  
Activity Level ◽  
Patient Specific ◽  
Activity Levels ◽  
Training Interventions ◽  
Mental Chronometry

Abstract BackgroundMotor imagery (MI) has been successfully applied in neurological rehabilitation. Little is known about the spontaneous selection of the MI perspectives in patients with sensorimotor impairments. What MI perspective is selected: internal (first- person view), or external (third-person view)? The aim was to evaluate the MI perspective preference in patients after stroke (STR), with Multiple Sclerosis (MS) or Parkinson’s disease (PD).MethodsIn a longitudinal study including four measurement sessions over two weeks, MI ability and MI perspective preference in both visual and kinaesthetic imagery modalities were assessed using the Kinaesthetic and Visual Imagery Questionnaire including 20 items (KVIQ-20), mental rotation, and mental chronometry. Additionally, patients' activity level was assessed. Descriptive statistical analyses were performed regarding different age- (≤44, 45-63, 64≤) and activity levels (inactive, partially active, active), and KVIQ-20 movement classifications (axial, proximal, distal, upper and lower limb).ResultsIn total, 55 in- and outpatients (25 SRT, 25 MS, 5 PD; 25 females; mean age 58±14 years) were included. At the first measurement session, the mean mental rotation score was 27±4.1 out of 32. For mental chronometry, a congruency ratio of 1.0±0.3 was determined. The KVIQ-20 scores for the visual and kinaesthetic subscales were 62.4±16.2 and 58.2±17.2. The internal MI perspective was favoured in 66.5% on the visual subscale and in 72.7% on the kinaesthetic subscale. The external perspective was preferred in 30.3% on the visual subscale and in 26.5% on the kinaesthetic subscale. Over the four measurement sessions, patients became more consistent in their MI perspective selection. MI perspective changes occurred mainly during imagination of shoulder, arm and neck movements. During imagination of foot and finger movements their MI perspective was more constant. Results showed a tendency to use an external perspective in patients older than 64 years and in patients with a descreasing physical activity level. Axial and proximal movements were commonly imagined using the external perspective. ConclusionIt is recommended to evaluate the spontaneous MI perspective selection to design patient-specific MI training interventions. Distal movements (foot, finger) may be an indicator when evaluating the consistency of the MI perspective in patients with sensorimotor impairments. Trial registrationThis is a research project involving persons other than a clinical trial according to the Human Research Act other than clinical (non-clinical trial). Registered: EKNZ 2015-172, 19. Mai 2015

Effects of Irradiation on Bacterial Load and Listeria monocytogenes in Raw Chicken

1992 ◽  
Vol 55 (5) ◽  
pp. 389-391 ◽  
Author(s):  
YURI VARABIOFF ◽  
GREGORY E. MITCHELL ◽  
STEPHEN M. NOTTINGHAM
Keyword(s):  
Listeria Monocytogenes ◽  
Cold Storage ◽  
Bacterial Load ◽  
Storage Period ◽  
Plate Count ◽  
Standard Plate Count ◽  
Standard Plate ◽  
Effects Of Irradiation On

After irradiation of chickens to a dose of 2.5 kGy, the decrease in the standard plate count (SPC) was similar in air and in vacuum-packaged chickens. During storage at 4°C for 15 d, the SPC increased progressively in both types of packaged chickens. At the end of the storage period, the SPC was higher in air-packaged chicken than in vacuum-packaged chickens. In irradiated chickens, Listeria monocytogenes was only recovered from the vacuum-packaged chickens after 7 d cold storage. In unirradiated chickens, L. monocytogenes proliferated similarly in both air- and vacuum-packaged chickens.

Effects of γ-irradiation on Listeria monocytogenes population, colour, texture and sensory properties of Feta cheese during cold storage

2009 ◽  
Vol 26 (2) ◽  
pp. 157-165 ◽  
Author(s):  
Spyros Konteles ◽  
Vassilia J. Sinanoglou ◽  
Anthimia Batrinou ◽  
Konstantinos Sflomos
Keyword(s):  
Listeria Monocytogenes ◽  
Cold Storage ◽  
Sensory Properties ◽  
Γ Irradiation ◽  
Feta Cheese

MODELING THE BEHAVIOR OF LISTERIA MONOCYTOGENES IN pH-MODIFIED CHICKEN SALAD DURING COLD STORAGE AND TEMPERATURE ABUSE CONDITIONS

2006 ◽  
Vol 29 (1) ◽  
pp. 89-117 ◽  
Author(s):  
ANN M. GUENTERT ◽  
RABI H. MOHTAR ◽  
RICHARD H. LINTON ◽  
MARK TAMPLIN ◽  
JOHN B. LUCHANSKY
Keyword(s):  
Listeria Monocytogenes ◽  
Cold Storage

Self-Rated Activity Levels and Longevity: Evidence from a 20 Year Longitudinal Study

2008 ◽  
Vol 67 (2) ◽  
pp. 171-186 ◽  
Author(s):  
Mark A. Mullee ◽  
Peter G. Coleman ◽  
Roger S. J. Briggs ◽  
James E. Stevenson ◽  
Joanne C. Turnbull
Keyword(s):  
Longitudinal Study ◽  
Activity Levels

Longitudinal study on the sources of Listeria monocytogenes contamination in cold-smoked salmon and its processing environment in Italy

2012 ◽  
Vol 158 (1) ◽  
pp. 79-84 ◽  
Author(s):  
Pierluigi Di Ciccio ◽  
Domenico Meloni ◽  
Anna Rita Festino ◽  
Mauro Conter ◽  
Emanuela Zanardi ◽  
...  
Keyword(s):  
Longitudinal Study ◽  
Listeria Monocytogenes ◽  
Smoked Salmon

scholarly journals Physical inactivity and headache disorders: cross-sectional analysis in the Brazilian longitudinal study of adult health (ELSA-Brasil)

2020 ◽  
pp. 72
Author(s):  
Arao Oliveira ◽  
Juliane Mercante ◽  
Mario Peres ◽  
Maria Molina ◽  
Paulo Lotufo ◽  
...  
Keyword(s):  
Physical Activity ◽  
Longitudinal Study ◽  
Physical Inactivity ◽  
Activity Levels ◽  
Adult Health ◽  
Headache Disorders ◽  
Cross Sectional ◽  
Physical Activity Levels ◽  
Probable Migraine ◽  
Sectional Analysis

BackgroundPhysical inactivity has been linked to headache disorders, but data regarding the current recommended leisure-time (LTPA) and commuting physical activity (CPA) levels is unknown.ObjectiveTo test the associations between headache disorders (definite and probable migraine tension type headache-TTH) and physical inactivity in these domains (LTPA and CPA) in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil).MethodsIn a cross-sectional analysis, logistic regression models computed the odds ratio (OR) for the relationship between headache disorders and physical activity (LTPA and CPA) in the following levels: “active” (Reference), “insuciently active”, and “inactive”. The full models were controlled for the effects of sociodemographic data, cardiovascular risk profile, and use of headache medication (migraine prophylaxis)ResultsOf 15,0105 participants, 14,847 (45.6 % of men and 54.4 % women) responded the baseline interviews regarding physical activity levels and headache disorders. Overall, most significant physical inactivity was observed in LTPA domain for definite migraine [OR: 1.32 (1.10-1.57)] and probable migraine [OR: 1.33 (1.17-1.50)]. Similar findings were replicated by sex. Physical inactivity (LTPA) was positively associated with definite migraine in women [OR: 1.29 (1.04-1.59)], probable migraine in both men [OR: 1.40 (1.15-1.69)] and women [OR: 1.29 (1.04-1.59)]. Physical inactivity in CPA domain was associated to increased OR for probable TTH in men [OR: 1.33 (1.01-1.75)], while CPA was inversely associated to definite migraine [OR: 0.79 (0.64-0.98)] and probable migraine [OR: 0.80 (0.67-0.96)] in women. Considering all headaches, unmet vigorous physical activity levels were associated to increased OR for definite migraine [OR: 1.36 (1.13-1.65)] and probable migraine [OR: 1.37 (1.20-1.57)]. Finally, we found higher odds for daily headaches among LTPA-inactive [OR: 1.73 (1.20-2.49)] and CPA-insufficiently active [ OR: 1.36 (1.04-1.79)] participants.ConclusionPhysical inactivity is associated with headache disorders in the ELSA-Brasil study, with distinct associations regarding headache subtype, sex, physical activity domain and intensity, and headache frequency.

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