Read by QxMD icon Read

Journal of Food Protection

Oleksandr Tokarskyy, Douglas L Marshall, Jeff Dillon, Linda S Andrews
Previous short-duration depuration studies with the eastern oyster ( Crassostrea virginica) demonstrated difficulty in achieving significant naturally incurred Vibrio vulnificus population count reductions. The present study used long-duration depuration (14 days) at controlled temperatures (10 or 22°C) and salinities (12, 16, or 20 mg/g). All depuration temperature-salinity combinations significantly reduced V. vulnificus counts, with greatest reductions seen in 12 mg/g, 10°C seawater (2.7-log CFU/g reduction) and in 20 mg/g, 22°C seawater (2...
December 26, 2018: Journal of Food Protection
Sofia M Santillana Farakos, Régis Pouillot, Gordon R Davidson, Rhoma Johnson, Insook Son, Nathan Anderson, Jane M VAN Doren
We assessed the risk of human salmonellosis from consumption of shelled walnuts in the United States and the impact of 0- to 5-log reduction treatments for Salmonella during processing. We established a baseline model with Salmonella contamination data from 2010 to 2013 surveys of walnuts from California operations to estimate baseline prevalence and levels of Salmonella during preshelling storage and typical walnut processing stages, considered U.S. consumption data, and applied an adapted dose-response model from the Food and Agriculture Organization and the World Health Organization to evaluate risk of illness per serving and per year...
December 26, 2018: Journal of Food Protection
Stephen Calhoun
No abstract text is available yet for this article.
December 26, 2018: Journal of Food Protection
Janak Dhakal, Chander S Sharma, Ramakrishna Nannapaneni, Christopher D McDANIEL, Taejo Kim, Aaron Kiess
The present study was conducted to evaluate the effect of chlorine-induced oxidative stress on biofilm formation by various Salmonella strains on polystyrene and stainless steel (SS) surfaces at three temperatures (30, 25 [room temperature], and 4°C) in tryptic soy broth (TSB) and 1/10 TSB. Fifteen Salmonella strains (six serotypes) were exposed to a sublethal chlorine concentration (150 ppm of total chlorine) in TSB for 2 h at the predetermined temperatures. The biofilm-forming ability of the Salmonella strains was determined in 96-well polystyrene microtiter plates by using a crystal violet staining method and on SS coupons in 24-well tissue culture plates...
December 26, 2018: Journal of Food Protection
(no author information available yet)
Shiga toxin-producing Escherichia coli (STEC) comprise a large, highly diverse group of strains. Since the emergence of STEC serotype O157:H7 as an important foodborne pathogen, serotype data have been used for identifying STEC strains, and this use continued as other serotypes were implicated in human infections. An estimated 470 STEC serotypes have been identified, which can produce one or more of the 12 known Shiga toxin (Stx) subtypes. The number of STEC serotypes that cause human illness varies but is probably higher than 100...
December 26, 2018: Journal of Food Protection
Burton W Blais, Kyle Tapp, Martine Dixon, Catherine D Carrillo
Next-generation sequencing plays an important role in the characterization of clinical bacterial isolates for source attribution purposes during investigations of foodborne illness outbreaks. Once an illness cluster and a suspect food vehicle have been identified, food testing is initiated for confirmation and to determine the scope of a contamination event so that the implicated lots may be removed from the marketplace. For biochemically diverse families of pathogens such as Shiga toxin-producing Escherichia coli (STEC), the ability to detect specific strains may be hampered by the lack of a universal selective enrichment approach for their recovery against high levels of background microbiota...
December 26, 2018: Journal of Food Protection
Hyeong Sang Kim, DA Young Lee, Sun Jin Hur
The objective of this study was to determine the effects of hemin and heating temperature on the mutagenicity and lipid oxidation of pork batter during in vitro human digestion with enterobacteria. The mutagenicity and lipid oxidation of pork batter increased in the presence of hemin and with increasing temperatures from 60 to 80°C by 17.9 and 23.0% and by 54.6 and 21.2%, respectively. However, the pork batter mutagenicity decreased by 6.09% during in vitro human digestion, whereas lipid oxidation increased by 19...
December 26, 2018: Journal of Food Protection
Marilyn C Erickson, Jye-Yin Liao, Alison S Payton, Peter W Cook, Jesus Bautista, Juan Carlos Díaz-Pérez
Cucumbers are frequently consumed raw and have been implicated in several recent foodborne outbreaks. Because this item may become contaminated at the farm, it is vital to explore the fate of attenuated Salmonella Typhimurium or Escherichia coli O157:H7 sprayed onto foliage, flowers, and fruit in fields and determine whether pre- or postcontamination spray interventions could minimize contamination. After spraying cucumber plants with contaminated irrigation water (3.8 log CFU/mL of Salmonella Typhimurium and E...
December 2018: Journal of Food Protection
Naim Deniz Ayaz, Bahar Onaran, Gizem Cufaoglu, Muammer Goncuoglu, Fatma Seda Ormanci, Irfan Erol
Swab samples from cattle and sheep carcasses (120 of each) were tested for Listeria monocytogenes, and 120 slaughterhouse wastewater samples were tested for listeriophages over 12 months (10 samples per month) to note the seasonal distribution. L. monocytogenes and bacteriophage isolates were characterized, and the biocontrol of L. monocytogenes was investigated in meatballs with a phage cocktail. L. monocytogenes was found in 3.4 and 2.5% of cattle and sheep carcasses, respectively. All the isolates were found to harbor hlyA, actA, inlA, inlB, inlC, inlJ, plcA, plcB, fbpA, and fri genes with varied mRNA expression levels by real-time reverse transcriptase PCR analysis...
December 2018: Journal of Food Protection
Jing Wang, Mingyue Li, Jing Wang, Miaomiao Liu, Kun Yang, Jie Zhang, Mingtao Fan, Xinyuan Wei
This study provided phenotypic and molecular analysis of the antibiotic resistance within coagulase-negative staphylococci and lactic acid bacteria isolated from naturally fermented Chinese cured beef. A total of 49 strains were isolated by selective medium and identified at the species level by 16S rRNA gene sequencing as follows: Staphylococcus carnosus (37), Lactobacillus plantarum (6), Weissella confusa (4), Lactobacillus sakei (1), and Weissella cibaria (1). All strains were typed by random amplified polymorphic DNA fingerprinting, and their antibiotic resistances profiles to 15 antibiotics were determined as the MIC by using the agar dilution method...
December 2018: Journal of Food Protection
Carol Hull-Jackson, Abiodun A Adesiyun
In Barbados, tourism is a significant pillar of the economy; however, there has been no research to document the food safety concerns of tourists. Therefore, the purpose of this study was to survey visitors' perceptions of food safety to understand their concerns, influences, and experiences with foodborne illness. A descriptive cross-sectional quantitative survey was conducted among 398 tourists, using stratified random sampling. Visitors were surveyed at two departure ports, the Grantley Adams International Airport (GAIA) ( n = 240) and the Bridgetown Cruise Terminal (BCT) ( n = 158)...
December 2018: Journal of Food Protection
Y U Wang, James B Pettengill, Arthur Pightling, Ruth Timme, Marc Allard, Errol Strain, Hugh Rand
Food production-related facilities (farms, packing houses, etc.) are monitored for foodborne pathogens, and data from these facilities can provide a rich source of information about the population structure and genetic diversity of Salmonella and Listeria. This information is of both academic interest for understanding the evolutionary forces acting on these organisms and of practical interest to those responsible for controlling pathogens in facilities and to those analyzing data from facilities in the context of public health decision making...
December 2018: Journal of Food Protection
(no author information available yet)
No abstract text is available yet for this article.
December 2018: Journal of Food Protection
Cristina Rodríguez-Melcón, Rosa Capita, Camino García-Fernández, Carlos Alonso-Calleja
Because listeriosis is one of the deadliest foodborne diseases, controlling and eradicating Listeria monocytogenes biofilms is a serious challenge for food safety. Biofilms (24 h old) formed on polystyrene by a L. monocytogenes strain of food origin were exposed for a further 24 h to 12 different concentrations (from 100 to 1011 PFU/mL) of the bacteriophage P100 (Listex P100). The structural parameters of biofilms were studied by using confocal laser scanning microscopy and digital image analysis. The biovolume in the observation field (14,121 μm2 ) of control (untreated) biofilms was 237,333...
December 2018: Journal of Food Protection
O Tokarskyy, J DE, M K Fatica, J Brecht, K R Schneider
Tomatoes are one of the major fresh produce commodities consumed in the United States. Harvesting tomato fruit at a later stage of development can enhance consumer acceptance but can also increase damage due to bruising. Bruising can affect the quality of whole tomatoes by causing an unacceptable appearance and accelerating decay. Bruising may also facilitate bacterial attachment to the fruit surface and support growth of pathogens. This study evaluated the survival and/or proliferation of Escherichia coli O157:H7 and Salmonella on the surface of artificially bruised and unbruised tomatoes at three ripeness stages (breaker, pink, and red) and two storage temperatures (10 and 20°C)...
December 2018: Journal of Food Protection
I Julia Marasteanu, Girvin Liggans, Jessica Otto, Angela Lasher
Food employee contamination of ready-to-eat foods through improper food handling practices is an important contributing factor for foodborne illness in retail and food service establishments. Decreasing the incidence of improper food handling practices is a frequent topic of retail food policy deliberations that often involves estimating the degree to which a proposed policy might affect a specific food handling practice. However, the potential reduction in contaminated servings of food, and therefore foodborne illnesses avoided, associated with a given proposed policy change, is all too often uncertain...
December 2018: Journal of Food Protection
Jamal Rahmani, Ali Miri, Anoushiravan Mohseni-Bandpei, Yadolah Fakhri, Geir Bjørklund, Hassan Keramati, Bigard Moradi, Nazak Amanidaz, Nabi Shariatifar, Amin Mousavi Khaneghah
Data from 11 articles and a total of 693 samples were used for a meta-analysis. Pooled mean histamine, 77.86 mg kg-1 , was lower than the FDA limit (200 mg kg-1 ). Pooled mean histamine prevalence was 9.19% with considerable heterogeneity. THQ value <1 indicates that adult consumers are not at risk of histamine poisoning.
December 2018: Journal of Food Protection
Amit Vikram, Eric Miller, Terrance M Arthur, Joseph M Bosilevac, Tommy L Wheeler, John W Schmidt
U.S. ground beef with "raised without antibiotics" (RWA) label claims are perceived as harboring fewer bacteria with antimicrobial resistance (AMR) than are found in conventional (CONV) ground beef with no such label claim. A total of 370 ground beef samples from CONV ( n = 191) and RWA ( n = 179) production systems were collected over 13 months from three food service suppliers. The following bacteria were cultured: Escherichia coli, tetracycline-resistant (TETr ) E. coli, third-generation cephalosporin-resistant (3GCr ) E...
December 2018: Journal of Food Protection
Sang-Mu Ko, Se-Young Cho, Myung-Joo Oh, Joseph Kwon, Bipin Vaidya, Duwoon Kim
Prompt and inexpensive detection of hepatitis A virus (HAV) is essential to control acute hepatitis outbreaks associated with the consumption of contaminated raw or minimally processed food. In this study, various carbohydrate-binding lectins, including concanavalin A (Con A), wheat germ agglutinin, and soybean agglutinin, were compared for their binding affinity to HAV. Con A, which showed significantly higher binding affinity than other lectins, was used to develop an alternative and affordable method to conventional antibody-linked immunomagnetic separation prior to detection of HAV using reverse transcriptase PCR...
December 2018: Journal of Food Protection
A McDermott, P Whyte, N Brunton, D J Bolton
Listeria monocytogenes is an important bacterial pathogen in seafood products, but limited information is currently available on the thermal resistance of relevant isolates in seafood. Thermal inactivation studies were undertaken (i) to provide much needed thermal inactivation data for L. monocytogenes in crab meat and (ii) to investigate whether tryptone soya broth (TSB) is representative of crab meat in thermal inactivation studies involving L. monocytogenes. D-values were obtained for a cocktail of two crab isolates (serotypes 1/2a and 4b) at 50, 55, and 60°C...
December 2018: Journal of Food Protection
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"