נגישות
menu      
חיפוש מתקדם
תחביר
חפש...
הספר "אוצר וולקני"
אודות
תנאי שימוש
ניהול
קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Survival of salmonella enterica serovar infantis on and within stored table eggs
Year:
2015
Source of publication :
Journal of Food Protection
Authors :
סלע, שלמה
;
.
פינטו, רבקה
;
.
Volume :
78
Co-Authors:
Lublin, A., Division of Avian and Fish Diseases, Kimron Veterinary Institute, P.O. Box 12, Bet Dagan, Israel
Maler, I., Laboratory of Food Microbiology, Kimron Veterinary Institute, P.O. Box 12, Bet Dagan, Israel
Mechani, S., Division of Avian and Fish Diseases, Kimron Veterinary Institute, P.O. Box 12, Bet Dagan, Israel
Pinto, R., Department of Food Quality and Safety, Institute of Postharvest Technology and Food Science, Agricultural Research Organization, P.O. Box 6, Bet Dagan, Israel
Sela-Saldinger, S., Department of Food Quality and Safety, Institute of Postharvest Technology and Food Science, Agricultural Research Organization, P.O. Box 6, Bet Dagan, Israel
Facilitators :
From page:
287
To page:
292
(
Total pages:
6
)
Abstract:
Contaminated table eggs are considered a primary source of foodborne salmonellosis globally. Recently, a single clone of Salmonella enterica serovar Infantis emerged in Israel and became the predominant serovar isolated in poultry. This clone is currently the most prevalent strain in poultry and is the leading cause of salmonellosis in humans. Because little is known regarding the potential transmission of this strain from contaminated eggs to humans, the objective of this study was to evaluate the ability of Salmonella Infantis to survive on the eggshell or within the egg during cold storage or at room temperature. Salmonella cells (5.7 log CFU per egg) were inoculated on the surface of 120 intact eggs or injected into the egg yolk (3.7 log CFU per egg) of another 120 eggs. Half of the eggs were stored at 5.5 ± 0.3°C and half at room temperature (25.5 ± 0.1uC) for up to 10 weeks. At both temperatures, the number of Salmonella cells on the shell declined by 2 log up to 4 weeks and remained constant thereafter. Yolk-inoculated Salmonella counts at cold storage declined by 1 log up to 4 weeks and remained constant, while room-temperature storage supported the growth of the pathogen to a level of 8 log CFU/ml of total egg content, as early as 4 weeks postinoculation. Examination of egg content following surface inoculation revealed the presence of Salmonella in a portion of the eggs at both temperatures up to 10 weeks, suggesting that this strain can also penetrate through the shell and survive within the egg. These findings imply that Salmonella enterica serovar Infantis is capable of survival both on the exterior and interior of table eggs and even multiply inside the egg at room temperature. Our findings support the need for prompt refrigeration to prevent Salmonella multiplication during storage of eggs at room temperature.
Note:
Related Files :
Animal
Animals
Egg Shell
Food Contamination
food microbiology
food storage
freezing
Microbiology
Salmonella
temperature
עוד תגיות
תוכן קשור
More details
DOI :
10.4315/0362-028X.JFP-14-066
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
23492
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:59
You may also be interested in
Scientific Publication
Survival of salmonella enterica serovar infantis on and within stored table eggs
78
Lublin, A., Division of Avian and Fish Diseases, Kimron Veterinary Institute, P.O. Box 12, Bet Dagan, Israel
Maler, I., Laboratory of Food Microbiology, Kimron Veterinary Institute, P.O. Box 12, Bet Dagan, Israel
Mechani, S., Division of Avian and Fish Diseases, Kimron Veterinary Institute, P.O. Box 12, Bet Dagan, Israel
Pinto, R., Department of Food Quality and Safety, Institute of Postharvest Technology and Food Science, Agricultural Research Organization, P.O. Box 6, Bet Dagan, Israel
Sela-Saldinger, S., Department of Food Quality and Safety, Institute of Postharvest Technology and Food Science, Agricultural Research Organization, P.O. Box 6, Bet Dagan, Israel
Survival of salmonella enterica serovar infantis on and within stored table eggs
Contaminated table eggs are considered a primary source of foodborne salmonellosis globally. Recently, a single clone of Salmonella enterica serovar Infantis emerged in Israel and became the predominant serovar isolated in poultry. This clone is currently the most prevalent strain in poultry and is the leading cause of salmonellosis in humans. Because little is known regarding the potential transmission of this strain from contaminated eggs to humans, the objective of this study was to evaluate the ability of Salmonella Infantis to survive on the eggshell or within the egg during cold storage or at room temperature. Salmonella cells (5.7 log CFU per egg) were inoculated on the surface of 120 intact eggs or injected into the egg yolk (3.7 log CFU per egg) of another 120 eggs. Half of the eggs were stored at 5.5 ± 0.3°C and half at room temperature (25.5 ± 0.1uC) for up to 10 weeks. At both temperatures, the number of Salmonella cells on the shell declined by 2 log up to 4 weeks and remained constant thereafter. Yolk-inoculated Salmonella counts at cold storage declined by 1 log up to 4 weeks and remained constant, while room-temperature storage supported the growth of the pathogen to a level of 8 log CFU/ml of total egg content, as early as 4 weeks postinoculation. Examination of egg content following surface inoculation revealed the presence of Salmonella in a portion of the eggs at both temperatures up to 10 weeks, suggesting that this strain can also penetrate through the shell and survive within the egg. These findings imply that Salmonella enterica serovar Infantis is capable of survival both on the exterior and interior of table eggs and even multiply inside the egg at room temperature. Our findings support the need for prompt refrigeration to prevent Salmonella multiplication during storage of eggs at room temperature.
Scientific Publication
You may also be interested in