scholarly journals Reduction of Salmonella Enteritidis in Fish by Microwave Cooking

2021 ◽  
Vol 21 (11) ◽  
pp. 535-540
Author(s):  
Didem Ucok Alakavuk ◽  
Safak Ulusoy ◽  
Serap Cosansu ◽  
Sühendan Mol
Keyword(s):  
Salmonella Enteritidis ◽  
Detectable Level ◽  
Internal Temperature ◽  
Microwave Cooking ◽  
Cooking Temperature

The effect of microwave cooking on the survival of Salmonella Enteritidis was investigated. Inoculated whiting and salmon fillets (6-7 log cfu/cm2) were cooked in microwave either packed or unpacked at two internal temperatures (50 and 70°C). When the samples were cooked up to the internal temperature of 50°C, the reductions were 1.82 log cfu/cm2 (29%) for packed and 0.69 log cfu/cm2 (11%) for unpacked whiting. For the same cooking temperature, the reductions were 2.39 (33%) and 0.73 log cfu/ cm2 (10%) for packed and unpacked salmon, respectively. When the internal temperature was 70°C, the reductions in S. Enteritidis counts were 2.89 (45%) and 3.90 cfu/cm2 (54%) unpacked whiting and salmon, respectively. However, the reductions were higher in packed samples of both fish cooked to 70C internal temperature than that of unpacked samples and counts of the pathogen were below the detectable level (<1.00 log cfu/cm2 ). These results suggested that packaging increased the S. Enteritidis reduction during microwave cooking and the reductions were higher in salmon than that of whiting. Microwave-cooking instructions must be included in the MW operating manuals. The foods must be cooked in microwave not lower than 360 W and 70°C.

Outbreaks of Salmonellosis in Minnesota (1998 through 2006) Associated with Frozen, Microwaveable, Breaded, Stuffed Chicken Products

2008 ◽  
Vol 71 (10) ◽  
pp. 2153-2160 ◽  
Author(s):  
KIRK E. SMITH ◽  
CARLOTA MEDUS ◽  
STEPHANIE D. MEYER ◽  
DAVID J. BOXRUD ◽  
FE LEANO ◽  
...  
Keyword(s):  
Salmonella Typhimurium ◽  
Salmonella Enteritidis ◽  
Preparation Method ◽  
Chicken Nuggets ◽  
Key Factors ◽  
Consumer Responses ◽  
The Public ◽  
Microwave Cooking ◽  
Raw Poultry ◽  
Salmonella Heidelberg

From 1998 through 2006, four outbreaks of salmonellosis associated with raw, frozen, microwaveable, breaded, pre-browned, stuffed chicken products were identified in Minnesota. In 1998, 33 Salmonella Typhimurium cases were associated with a single brand of Chicken Kiev. In 2005, four Salmonella Heidelberg cases were associated with a different brand and variety (Chicken Broccoli and Cheese). From 2005 to 2006, 27 Salmonella Enteritidis cases were associated with multiple varieties of product, predominately of the same brand involved in the 1998 outbreak. In 2006, three Salmonella Typhimurium cases were associated with the same brand of product involved in the 2005 Salmonella Heidelberg outbreak. The outbreak serotype and pulsed-field gel electrophoresis subtype of Salmonella were isolated from product in each outbreak. In these outbreaks, most individuals affected thought that the product was precooked due to its breaded and prebrowned nature, most used a microwave oven, most did not follow package cooking instructions, and none took the internal temperature of the cooked product. Similar to previous salmonellosis outbreaks associated with raw, breaded chicken nuggets or strips in Canada and Australia, inadequate labeling, consumer responses to labeling, and microwave cooking were the key factors in the occurrence of these outbreaks. Modification of labels, verification of cooking instructions by the manufacturer, and notifications to alert the public that these products contain raw poultry, implemented because of the first two outbreaks, did not prevent the other outbreaks. Microwave cooking is not recommended as a preparation method for these types of products, unless they are precooked or irradiated prior to sale.

scholarly journals Salmonella outbreak from microwave cooked food

1995 ◽  
Vol 115 (2) ◽  
pp. 227-230 ◽  
Author(s):  
M. R. Evans ◽  
S. M. Parry ◽  
C. D. Ribeiro
Keyword(s):  
Salmonella Enteritidis ◽  
Phage Type ◽  
Food Poisoning ◽  
Microwave Oven ◽  
Microbiological Analysis ◽  
Microwave Cooking ◽  
Faecal Samples ◽  
Full Power ◽  
Cooked Food

SummaryFollowing a buffet meal served to six guests at a private domestic function, five of the guests and the host developed symptoms of food poisoning. Salmonella enteritidis phage type 4 (PT4) was isolated from all four individuals who submitted faecal samples for investigation. Leftover samples of a savoury rice dish consumed by all six ill persons contained 6×103/gm Salmonella enteritidis PT4. The rice salad comprised boiled rice, raw carrots, eggs, cheese and curry powder. The curry powder and remainder of the pack of six eggs were negative on microbiological analysis. The rice dish had been prepared by heating in a 500 W microwave oven with a rotating turntable on full power for 5 min. Although the hazards of inadequate microwave cooking are well recognized, this is only the second outbreak of food poisoning from microwave cooking to be reported.

Survival of Escherichia coli O157:H7, Salmonella Enteritidis, Staphylococcus aureus, and Listeria monocytogenes in Kimchi

2004 ◽  
Vol 67 (7) ◽  
pp. 1497-1500 ◽  
Author(s):  
Y. INATSU ◽  
M. L. BARI ◽  
S. KAWASAKI ◽  
K. ISSHIKI
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Listeria Monocytogenes ◽  
Incubation Period ◽  
Salmonella Enteritidis ◽  
Detectable Level ◽  
Escherichia Coli O157 ◽  
Inoculum Level ◽  
Initial Inoculum ◽  
E Coli

The survival of gram-positive and gram-negative foodborne pathogens in both commercial and laboratory-prepared kimchi (a traditional fermented food widely consumed in Japan) was investigated. It was found that Escherichia coli O157:H7, Salmonella Enteritidis, Staphylococcus aureus, and Listeria monocytogenes could survive in both commercial and laboratory-prepared kimchi inoculated with these pathogens and incubated at 10°C for 7 days. However, when incubation was prolonged, the S. aureus level decreased rapidly from the initial inoculum level to the minimum detectable level within 12 days, whereas Salmonella Enteritidis and L. monocytogenes took 16 days to reach similar levels in commercial kimchi. On the other hand, E. coli O157:H7 remained at high levels throughout the incubation period. For laboratory-prepared kimchi, the S. aureus level decreased rapidly from the initial inoculum level to the minimum detectable level within 12 days, and L. monocytogenes took 20 days to reach a similar level. E. coli O157:H7 and Salmonella Enteritidis remained at high levels throughout the incubation period. The results of this study suggest that the contamination of kimchi with E. coli O157:H7, Salmonella Enteritidis, S. aureus, or L. monocytogenes at any stage of production or marketing could pose a potential risk.

scholarly journals The effects of cold pork loins on the pasteurization temperature in sous vide cooking

2018 ◽  
Author(s):  
David Xu Wang ◽  
BCIT School of Health Sciences, Environmental Health ◽  
Helen Heacock ◽  
Lorraine McIntyre
Keyword(s):  
Bacterial Count ◽  
T Test ◽  
Water Bath ◽  
Internal Temperature ◽  
Cooking Temperature ◽  
Group 6 ◽  
Group A ◽  
Pork Loin ◽  
Sous Vide ◽  
Group B

  Objective: Sous vide is a relatively new cooking method introduced in restaurants in British Columbia. Sous vide cooking involves placing vacuum sealed food inside a temperature controlled water bath or steam convection oven. Unlike conventional cooking, sous vide cooking involves cooking food at a lower temperature (usually < 65°C) with a longer cook time. The low temperature allows chefs to precisely control the changes within the food. Thus sous vide cooked dishes have consistent texture and color, with retained flavor, moistness and nutrients. With all the benefits, sous vide cooking does have some disadvantages. Lower cooking temperature may not be sufficient for bacterial count reduction, resulting in unsafe food. In addition, every validated sous vide menu requires chefs to precisely follow the cooking temperature and cook time. Any deviation can cause the food to not reach the required 6.5 log reduction in bacterial count. The purpose of this experiment was to determine the effect on the internal temperature of cooking-in-process pork loin packages when additional chilled pork loin packages with an internal temperature of 4°C are submerged into the water bath. Methods: Two groups of pork loin packages with data loggers inside (SmartButton) at approximately 4°C were introduced into a 60°C water bath at different intervals. The first group (6 packages) was immersed inside the water bath at time = 0 minute, while the second group (6 packages) was immersed inside the water bath at time = 10 minutes. Both groups were taken out when they were cooked for 31 minutes (at time = 31 minutes and 41 minutes respectively). Water bath temperature was recorded using SPER Scientific 8000024 data logger. Temperature data for pork loin packages was used to calculate the mean lethality achieved by each group. One sample t-test and two sample t-test were used for statistical analysis. Results: There was a more than 3 mean log lethality difference in group A and group B pork loins. Pork loins cooked sous vide style in group A achieved a mean lethality of 5.12 at 31 minutes (range 0.42 to 12.78) while group B pork loins achieved a mean lethality of 8.44 at 31 minutes (range 3.35 to 11.87). With the same cook time, group A had a statistically significantly lower mean lethality than group B pork loins with p value = 0.003. Although statistically inconclusive whether group A pork loins achieved a mean lethality of 6.5, group B pork loins did reach the recommended mean lethality of 6.5. Conclusion: The result indicated when new cold pork loin packages at 4°C are introduced into a cooking-in-process sous vide water bath at 60°C, the lethality of the original pork loin packages in the bath will be lowered if the cook time remains unchanged. However, it is inconclusive on whether the original pork loin packages will reach 6.5 lethality recommended by BCCDC. The new pork loin packages will reach 6.5 lethality if the original cook time is used.  

Thermal Inactivation of Salmonella in Pâté Made from Chicken Liver

2019 ◽  
Vol 82 (6) ◽  
pp. 980-987 ◽  
Author(s):  
ANNA C. S. PORTO-FETT ◽  
BRADLEY A. SHOYER ◽  
LAURA E. SHANE ◽  
MANUELA OSORIA ◽  
ELIZABETH HENRY ◽  
...  
Keyword(s):  
Thermal Inactivation ◽  
Black Pepper ◽  
Water Bath ◽  
Chicken Liver ◽  
Internal Temperature ◽  
Food Processor ◽  
Circulating Water ◽  
Cooking Process ◽  
Cooking Temperature

ABSTRACT The effect of heating times and temperatures on inactivation of Salmonella in pâté made from chicken liver was evaluated. Raw chicken liver (ca. 1 kg) was blended in a food processor with two hard-boiled eggs (ca. 100 g total) plus a mixture of sautéed white onions (100 g), salt (5.0 g), black pepper (2.5 g), and butter (112 g). The tempered (ca. 15°C) raw pâté batter was inoculated with a nine-strain cocktail (ca. 6.5 log CFU/g) of Salmonella, and then ca. 25-g portions were aseptically transferred into sterile 50-mL polypropylene conical tubes. One set of tubes was completely submerged in a thermostatically controlled, circulating water bath set at 74.9°C and cooked to target instantaneous internal temperatures ranging from 60 to 73.9°C. An otherwise similar set of tubes was cooked at 60 to 73.9°C, with holding times of 3 to 30 min, in a water bath set at 1°C above each target endpoint cooking temperature. Regardless of the cooking process, when pâté was cooked to a target instantaneous internal temperature of 60 to 73.9°C, pathogen numbers decreased by ca. 1.9 to ≥6.4 log CFU/g; additional reductions of ca. 0.6 to 1.3 log CFU/g were observed when pâté was cooked to a target instantaneous internal temperature of 60 to 68°C and then held for 3 to 30 min. In related experiments, pâté was prepared as described above, but with inoculated chicken livers (500 g; ca. 5.5 log CFU/g) that were cooked in a frying pan maintained at ca. 140°C for 3 to 8 min with a mixture of sautéed onions, salt, black pepper, and butter and then blended with a hard-boiled egg. Pathogen numbers within liver cooked in a frying pan decreased by ca. 1.0 to 4.9 log CFU/g. Collectively, these findings may be useful for establishing cooking guidelines for pâté and thus for lowering the risk of illness if chicken liver is contaminated with Salmonella and the attendant batter is not handled or cooked properly. HIGHLIGHTS

Thermal Destruction of Microorganisms in Meat by Microwave and Conventional Cooking1

1977 ◽  
Vol 40 (7) ◽  
pp. 442-444 ◽  
Author(s):  
F. LEON CRESPO ◽  
H. W. OCKERMAN
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Thermal Destruction ◽  
Ground Beef ◽  
Internal Temperature ◽  
Temperature Level ◽  
Microwave Cooking ◽  
Microbial Destruction

When heating ground beef to internal temperatures of 34, 61, and 75 C, high temperature (232 ± 6 C) oven cooking was more effective for bacterial destruction than low temperature (149 ± 6 C) oven cooking. Low temperature oven cooking was more effective than microwave cooking. These differences in microbial destruction rates became significant (P&lt;05) when the meat reached the 75-C internal temperature level.

scholarly journals Is that food RTE?

2019 ◽  
Author(s):  
Ella Derby ◽  
BCIT School of Health Sciences, Environmental Health ◽  
Dale Chen ◽  
Lorraine McIntyre
Keyword(s):  
Food Safety ◽  
Product Category ◽  
Food Product ◽  
Food Products ◽  
Primary Data ◽  
Grocery Stores ◽  
Internal Temperature ◽  
Additional Food ◽  
Frozen Food ◽  
Cooking Temperature

  Background: Rates of foodborne illness linked to consumers misinterpreting, or lack of proper cooking instructions on frozen food products continue to rise. With many recalls and outbreaks in the recent years surrounding frozen breaded chicken (FBC) products due to consumers not adequately cooking products and in turn becoming ill. However, it is not just frozen breaded chicken to blame, frozen microwavable entrees have also contributed to this problem. Therefore, the purpose of this project was to determine what was actually being displayed on the packaging of these frozen foods. Identifying whether or not frozen food products have clear, specific and consistent cooking instructions for the consumers is critical in identifying the risk of cooking and eating these foods. Methods: Secondary data was obtained from the British Columbia Centers for Disease Control (BCCDC) of cooking instructions on FBC packaging, and primary data was collected through visiting grocery stores in the Metro Vancouver area by surveying cooking instructions on frozen microwavable entrees packaging. Four categories of data were assessed, 2008 and 2018 raw FBC products, 2018 cooked FBC, and 2019 frozen microwavable entrees. Parameters such as inclusion of internal cooking temperature, thermometer usage, microwave instructions, and additional food safety handling was gathered. Chi-square tests were used to analyze the results with the statistical software NCSS12. Results: Of all categories surveyed 87.1% (n=122) said to cook the product to a minimum of 74°C, and 12.9% (n=18) did not state anything. 2018 raw FBC always stated an internal cooking temperature (100%), whereas 58% of the 2008 raw FBC stated an internal temperature and 89% of both the 2019 frozen entrees and 2018 cooked FBC did. Out of all 140 products surveyed across categories only 8% stated to use a thermometer when cooking to ensure food has reached proper internal temperature. The frequency of categories to display food safety was as follows, the 2018 raw FBC (82%) and the 2008 raw FBC (79%), followed by the 2019 frozen entrees (42%) and the 2018 cooked FBC (21%). For the microwave instructions the frozen entrees almost always stated this (81%), whereas the 2008 and 2018 raw FBC both never stated to use a microwave (0%). There was a significant association between products and the inclusion of the statement of internal cooking temperature and thermometer usage. This was based on the food product category itself, frozen breaded chicken or frozen entrees, or based on manufacturer of the product. Conclusions: It was evident that the major gap lies in the consistency of instructions. Almost every manufacturer had their cooking instructions presented differently, which could in turn confuse the consumer. Instructions also rarely stated to use a thermometer to check the internal temperature, although almost always stated a specific temperature to cook to. A small portion of manufactures are diligent about displaying all necessary information to the consumer such as, Kraft, Conagra foods, and Olymel which adequately met all parameters assessed. In order to fix the gaps of inconsistency of instructions this information can be used as educational tools by the BCCDC to inform customers on what to look for in cooking instructions of frozen  

Effects of Handling and Preparation of Turkey Products on the Survival of Campylobacter jejuni

1986 ◽  
Vol 49 (8) ◽  
pp. 627-631 ◽  
Author(s):  
G. R. ACUFF ◽  
C. VANDERZANT ◽  
M. O. HANNA ◽  
J. G. EHLERS ◽  
F. A. GARDNER
Keyword(s):  
Campylobacter Jejuni ◽  
Complete Removal ◽  
Hand Washing ◽  
Food Handlers ◽  
Internal Temperature ◽  
Visual Evaluation ◽  
Microwave Cooking ◽  
Cutting Boards

Various cooking procedures (roasting, braising, stewing and microwave cooking) applied to turkey thighs, and washing procedures for contaminated utensils (knives and cutting boards) and food handlers' hands were evaluated for their effectiveness in removing Campylobacter jejuni. Roasting, braising and stewing were effective in destruction of C. jejuni on contaminated turkey thighs even when the meat was undercooked, reaching an internal temperature of 55°C. Destruction of C. jejuni by microwave cooking was assured more fully if a meat thermometer was used to check the internal temperature of the sample rather than by visual evaluation. Washing of utensils with water and detergent, either by hand or in a dishwasher, removed C. jejuni except from wooden cutting boards washed by hand. Minimal hand washing procedures may not assure complete removal of C. jejuni from contaminated hands.

Methods for Detecting Processing Temperatures of Previously Cooked Meat and Poultry Products - A Review

1989 ◽  
Vol 52 (2) ◽  
pp. 128-135 ◽  
Author(s):  
W. E. TOWNSEND ◽  
L. C. BLANKENSHIP
Keyword(s):  
Internal Temperature ◽  
Pork Products ◽  
Poultry Products ◽  
Research Activities ◽  
Cooking Temperature ◽  
Luncheon Meat ◽  
Inspection Service ◽  
Activity Method ◽  
Cooked Meat ◽  
Improved Methods

Title 9 of the Code of Federal Regulations establishes prescribed thermal treatment for a variety of meat and poultry products. These requirements are to ensure the destruction of harmful microorganisms and viruses that cause diseases in humans and livestock. The information presented in this review provides information relative to the current procedures used by the Food Safety and Inspection Service (FSIS) for monitoring the adequacy of heat treatment of meat and poultry products; and the research activities that have been and are currently being conducted to develop new and/or improved methods for determining the maximum internal temperature of meat and poultry products. Currently, FSIS is using a protein “Coagulation Test” for monitoring the maximum internal temperature (MIT) of both beef and pork products heat processed to temperatures lower than 65°C; a residual “Acid Phosphatase Activity Method” for determining the MIT of canned hams, canned picnics and canned luncheon meat, and a third method, known as the “Bovine Catalase Test”, for the determination of catalase which gives a pass/fail indication at a cooking temperature of 62.8°C for rare roast beef and cooked beef. Since 1957, several attempts have been made to develop new and/or improved methods. These include an evaluation of the enzyme systems and various physical techniques. The lack of new and/or improved methods is not due to the lack of research efforts in this area, as evidenced by this review. The challenge is the development of a method which can accurately determine within ± 1.0°C the endpoint temperature in the temperature range (67.8 – 70.0°C) that is of most interest to FSIS.

scholarly journals Hamburger Köftelerin Oksidatif Stabilitesi Üzerine Farklı Pişirme Teknikleri ve Merkez Sıcaklığı Uygulamalarının Etkisi

2020 ◽  
Vol 8 (4) ◽  
pp. 807-817
Author(s):  
Azim Şimşek
Keyword(s):  
Lipid Hydroperoxide ◽  
Thiobarbituric Acid ◽  
Cooking Loss ◽  
Thiobarbituric Acid Reactive Substances ◽  
Ph Values ◽  
Microwave Cooking ◽  
Cooking Temperature ◽  
Hue Angle ◽  
Temperature Application ◽  
Temperature Applications

The aim of this study was to investigate the effects of different cooking techniques and internal cooking temperature applications on the oxidative stability of hamburger patties. For this purpose, 4 different cooking techniques (boiling, oven-roasting, grilling and microwave) and 2 different internal cooking temperatures (72°C and 78°C) were used. Microwave cooking caused the highest cooking loss values. The higher cooking loss values were determined as a result of the 78°C internal cooking temperature application. Lower pH values were obtained by microwave cooking. Boiling increased L* and a* values, whereas decreased b* values compared to other cooking techniques. While a* values decreased with storage in hamburger patties, b* and HUE angle values increased. The lower thiobarbituric acid reactive substances (TBARS) and lipid hydroperoxide (LPO) values were determined in samples cooked with microwave or boiling technique. Even though there was no TBARS difference between different internal cooking temperature applications, the higher LPO values were determined in the application of 78°C internal cooking temperature. The results of this study showed that less oxidative changes could be occurred by the use of either microwave or boiling technique in hamburger patty production.

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