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Journal of Food Protection

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https://www.readbyqxmd.com/read/29028360/a-predictive-model-for-the-growth-of-listeria-monocytogenes-in-commercial-blue-crab-callinectes-sapidus
#1
Salina Parveen, Channel White, Mark L Tamplin
During the processing and handling of commercial blue crab (Callinectes sapidus), Listeria monocytogenes can potentially contaminate cooked meat and grow to hazardous levels. To manage this risk, predictive models are useful tools for designing and implementing preventive controls; however, no model specific for blue crab meat has been published or evaluated. In this study, a cocktail of L. monocytogenes strains was added to pasteurized blue crab meat, which was incubated at storage temperatures from 0 to 35°C...
October 13, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28994613/gyrase-a-mutations-in-campylobacter-associated-with-decreased-susceptibility-to-different-fluoroquinolones
#2
Chris A Whitehouse, Shaohua Zhao, Sampa Mukherjee, Heather Tate, Sonya Bodeis-Jones, Shenia Young, Stuart Gaines, Patrick McDermott
Campylobacter is a leading cause of foodborne diarrheal illness worldwide, and the emergence of antimicrobial-resistant strains is a major global public health concern. The goal of this study was to compare the activity of different fluoroquinolone antibiotics against ciprofloxacin-resistant Campylobacter jejuni and Campylobacter coli. Isolates from retail meats collected between 2002 and 2009 were selected based on their in vitro susceptibility testing results against ciprofloxacin. In total, 289 C. jejuni and 165 C...
October 10, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28994612/metal-concentrations-in-samples-of-frozen-cephalopods-cuttlefish-octopus-squid-and-shortfin-squid-an-evaluation-of-dietary-intake
#3
D Sangiuliano, C Rubio, A J Gutiérrez, D González-Weller, C Revert, A Hardisson, E Zanardi, S Paz
Cephalopods are an important source of nutrients and some of the most widely consumed marine foods. However, because of contamination of the oceans and the bioaccumulative nature of toxic metals, these foods may pose a health risk. For this reason, the concentrations of some trace elements (chromium [Cr], lithium, strontium [Sr], copper [Cu], and nickel) and toxic metals (aluminum [Al], cadmium, and lead) were determined in 65 frozen samples of cuttlefish, octopus, common squid, and shortfin squid by inductively coupled plasma optical emission spectrometry to evaluate dietary intake and toxic risk...
October 10, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28990822/identification-of-structural-and-immunity-genes-of-a-class-iib-bacteriocin-encoded-in-the-enterocin-a-operon-of-enterococcus-faecium-strain-mxvk29
#4
E E Escamilla-Martínez, Y M Álvarez Cisneros, F J Fernández, M Quirasco-Baruch, E Ponce-Alquicira
The Enterococcus faecium strain MXVK29, isolated from fermented sausages, produces a bacteriocin with a molecular mass of 3.5 kDa that belongs to the class of enterocins II.1, according to the terminal amino acid sequence, and has been identified as enterocin A. This bacteriocin is active against selected strains of Listeria, Staphylococcus, Pediococcus, and Enterococcus. In this study, we identified the genes adjacent to the structural gene for this bacteriocin, such as the immunity gene (entI) and the inducer gene (entF)...
October 9, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28990821/enrichment-broth-for-the-detection-of-campylobacter-jejuni-and-campylobacter-coli-in-fresh-produce-and-poultry
#5
Youmi Jo, Hye-Min Oh, Yohan Yoon, Sun-Young Lee, Ji-Hyoung Ha, Won-Il Kim, Hwang-Yong Kim, Sanghyun Han, Se-Ri Kim
Although campylobacteriosis caused by Campylobacter jejuni and Campylobacter coli has been increasingly reported worldwide owing to the consumption of contaminated poultry and fresh produce, the current detection protocols are not selective enough to inhibit unspecific microbes other than these pathogens. Five antibiotics were separately added to Bolton broth, and the survival rates of 18 Campylobacter spp. and 79 non-Campylobacter spp. were evaluated. The survival rate of the non-Campylobacter spp. was the lowest in Bolton broth with rifampin (6...
October 9, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28990820/interleukin-2-secretion-by-t-cells-for-detection-of-biologically-active-staphylococcal-enterotoxin-type-e
#6
Reuven Rasooly, Paula Do, Bradley J Hernlem
Staphylococcus aureus is a significant worldwide source of clinical infections and foodborne illnesses; it acts through the synthesis of a group of enterotoxins (SEs) that cause gastroenteritis and also function as superantigens that activate T cells, resulting in massive cytokine production, yielding life-threatening toxicity. It is important that methods for detection and quantification of these toxins respond to their activity and not just the presence of the toxin molecule, which may be deactivated. Traditionally, live animals have been used to test for emesis following administration of the toxin-containing sample...
October 9, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28990819/evaluating-the-u-s-food-safety-modernization-act-produce-safety-rule-standard-for-microbial-quality-of-agricultural-water-for-growing-produce
#7
Arie H Havelaar, Kathleen M Vazquez, Zeynal Topalcengiz, Rafael Muñoz-Carpena, Michelle D Danyluk
The U.S. Food and Drug Administration (FDA) has defined standards for the microbial quality of agricultural surface water used for irrigation. According to the FDA produce safety rule (PSR), a microbial water quality profile requires analysis of a minimum of 20 samples for Escherichia coli over 2 to 4 years. The geometric mean (GM) level of E. coli should not exceed 126 CFU/100 mL, and the statistical threshold value (STV) should not exceed 410 CFU/100 mL. The water quality profile should be updated by analysis of a minimum of five samples per year...
October 9, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28981373/geospatial-mapping-of-early-cases-in-multistate-foodborne-disease-outbreaks-a-strategy-to-expedite-identification-of-contaminated-imported-produce-united-states-2006-to-2013
#8
Cary Chen Parker, Crystal McKenna, Matthew Wise, Christopher Gezon, Karl C Klontz
From 1998 to 2008, produce-related illness outbreaks accounted for roughly one-half of reported foodborne outbreaks in the United States. In 2013, Mexico accounted for approximately 50 and 30% of the monetary value of all vegetables and fruits, respectively, imported into the United States. We used historical import data to examine the correlation between the port of entry for five implicated produce vehicles from five multistate outbreaks and the geospatial and temporal distribution of illnesses in the corresponding outbreaks in the United States...
October 5, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28981377/detection-of-salmonella-enterica-subsp-enterica-serovar-cubana-from-naturally-contaminated-chick-feed
#9
Faiza Benahmed, Hua Wang, Junia Jean-Gilles Beaubrun, Gopal R Gopinath, Chorng-Ming Cheng, Darcy E Hanes, Thomas S Hammack, Mark Rasmussen, Maureen K Davidson
Because some significant outbreaks of human salmonellosis have been traced to contaminated animal feed, the rapid and efficient detection of Salmonella in feed is essential. However, the current U.S. Food and Drug Administration Bacteriological Analytical Manual (BAM) culture method that uses lactose broth as a preenrichment medium has not reliably supported the results of real-time PCR assays for certain foods. We evaluated the BAM culture method and a quantitative real-time PCR (qPCR) assay using two preenrichment media, modified buffered peptone water and lactose broth, to detect Salmonella enterica subsp...
October 4, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28981376/microbiological-survey-of-packaged-ready-to-eat-red-meats-at-retail-in-new-zealand
#10
Lucia Rivas, Beverley Horn, Roger Cook, Marion Castle
A microbiological survey was undertaken on packaged ready-to-eat red meats available at retail in New Zealand. A total of 1,485 samples (297 lots of five samples each) were collected according to a sampling plan based on market share and regulatory regimes (Animal Products Act 1999 and Food Act 1981) and were tested against the microbiological limits specified in Food Standards Code (FSC) 1.6.1 applicable at the time of sampling. Each lot was tested as a composite for the presence or absence of Salmonella spp...
October 4, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28981375/prevalence-of-salmonella-in-11-spices-offered-for-sale-from-retail-establishments-and-in-imported-shipments-offered-for-entry-to-the-united-states
#11
Guodong Zhang, Lijun Hu, Régis Pouillot, Aparna Tatavarthy, Jane M Van Doren, Daria Kleinmeier, George C Ziobro, David Melka, Hua Wang, Eric W Brown, Errol Strain, Vincent K Bunning, Steven M Musser, Thomas S Hammack
The U.S. Food and Drug Administration conducted a survey to evaluate Salmonella prevalence and aerobic plate counts in packaged (dried) spices offered for sale at retail establishments in the United States. The study included 7,250 retail samples of 11 spice types that were collected during November 2013 to September 2014 and October 2014 to March 2015. No Salmonella-positive samples (based on analysis of 125 g) were found among retail samples of cumin seed (whole or ground), sesame seed (whole, not roasted or toasted, and not black), and white pepper (ground or cracked), for prevalence estimates of 0...
October 4, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28976788/antimicrobial-effects-of-7-8-dihydroxy-6-methoxycoumarin-and-7-hydroxy-6-methoxycoumarin-analogues-against-foodborne-pathogens-and-the-antimicrobial-mechanisms-associated-with-membrane-permeability
#12
Ji-Yeon Yang, Jun-Hwan Park, Myung-Ji Lee, Ji-Hoon Lee, Hoi-Seon Lee
The antimicrobial effects of 7,8-dihydroxy-6-methoxycoumarin and 7-hydroxy-6-methoxycoumarin isolated from Fraxinus rhynchophylla bark and of their structural analogues were determined in an attempt to develop natural antimicrobial agents against the foodborne pathogens Escherichia coli, Bacillus cereus, Staphylococcus intermedius, and Listeria monocytogenes. To elucidate the relationship between structure and antimicrobial activity for the coumarin analogues, isolated constituents and their structural analogues were evaluated against foodborne pathogens...
October 3, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28985475/erratum
#13
(no author information available yet)
In the article "Changes in Aerobic Plate and Escherichia coli-Coliform Counts and in Populations of Inoculated Foodborne Pathogens on Inshell Walnuts during Storage" by J. C. Frelka, G. R. Davidson, and L. J. Harris, Journal of Food Protection 79(7):1143-1153, 2016, doi:10.4315/0362-028X.JFP-15-553, the sentence beginning in line 11 of the Abstract should read as follows: "Populations declined by 2.86, 5.01, and 4.40 log CFU per nut for Salmonella, E. coli O157:H7, and L. monocytogenes, respectively, after drying and during the first 8 days of storage...
October 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28945113/development-of-a-novel-listeria-enrichment-broth-for-the-isolation-of-pathogenic-listeria
#14
Dongxin Liu, Yan Wang, Yi Wang, Lu Zhang, Lijuan Luo, Kai Liu, Changyun Ye
Listeriosis, the disease caused by pathogenic Listeria species, can present severe symptoms in susceptible people. The goal of this study was to develop a novel enrichment broth, Listeria allose enrichment broth (LAEB), to improve isolation of Listeria monocytogenes and Listeria ivanovii from samples through incorporating a specific carbohydrate and reducing inhibitor concentrations. Other coexisting bacteria, particularly Listeria innocua, can interfere with the isolation of pathogenic Listeria in such ways as overgrowth of L...
October 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28922030/rapid-detection-and-classification-of-salmonella-enterica-shedding-in-feedlot-cattle-utilizing-the-roka-bioscience-atlas-salmonella-detection-assay-for-the-analysis-of-rectoanal-mucosal-swabs
#15
W Evan Chaney, Getahun E Agga, Scott V Nguyen, Terrance M Arthur, Joseph M Bosilevac, Erin Dreyling, Anantharama Rishi, Dayna Brichta-Harhay
With an increasing focus on preharvest food safety, rapid methods are required for the detection and quantification of foodborne pathogens such as Salmonella enterica in beef cattle. We validated the Atlas Salmonella Detection Assay (SEN), a nucleic acid amplification technology that targets Salmonella rRNA, for the qualitative detection of S. enterica with sample enrichment using immunomagnetic separation as a reference test, and we further evaluated its accuracy to predict pathogen load using SEN signal-to-cutoff (SCO) values from unenriched samples to classify animals as high or nonhigh shedders...
October 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28922029/exploratory-study-into-the-microbiological-quality-of-spinach-and-cabbage-purchased-from-street-vendors-and-retailers-in-johannesburg-south-africa
#16
Erika M du Plessis, Sarasha Govender, Bala Pillay, Lise Korsten
Knowledge of the microbiological quality and prevalence of antibiotic resistance and virulence genes in bacterial isolates from leafy green vegetables supplied by formal suppliers (retailers) and informal suppliers (street vendors) in South Africa is limited. Because leafy vegetables have been implicated in foodborne disease outbreaks worldwide, 180 cabbage and spinach samples were collected from three major retailers and nine street vendors in Johannesburg, South Africa. Escherichia coli and coliforms were enumerated using Petrifilm plates...
October 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28922028/analysis-of-aflatoxin-m1-in-breast-milk-and-its-association-with-nutritional-and-socioeconomic-status-of-lactating-mothers-in-lebanon
#17
Jomana Elaridi, Maya Bassil, Joelle Abi Kharma, Farah Daou, Hussein F Hassan
Aflatoxin B1 (AFB1) is the most potent of the dietary aflatoxins, and its major metabolite, aflatoxin M1 (AFM1), is frequently found in the breast milk of lactating mothers. The aim of this study was to assess the occurrence and factors associated with AFM1 contamination of breast milk collected from lactating mothers in Lebanon. A total of 111 breast milk samples were collected according to the guidelines set by the World Health Organization. Samples were analyzed with a competitive enzyme-linked immunosorbent assay between December 2015 and November 2016...
October 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28922027/further-evidence-of-how-unbuffered-starvation-at-4%C3%A2-c-influences-listeria-monocytogenes-egd-e-hcc23-f2365-and-scott-a
#18
Nathan A Jarvis, Corliss A O'Bryan, Elizabeth M Martin, Steven C Ricke, Michael G Johnson, Philip G Crandall
The soilborne pathogen Listeria monocytogenes frequently contaminates food products and food processing environments and is able to survive desiccation, high osmotic pressures, and starvation. However, little is known about how this pathogen survives starvation at 4°C. This study provides evidence that L. monocytogenes is able to survive total nutrient starvation for 4 weeks. L. monocytogenes strains EGD-e, Scott A, F2365, and HCC23 were starved individually in sterile water. Colony counts declined over 4 weeks, with Scott A declining the most rapidly...
October 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28922026/characterization-of-quinolone-resistance-in-salmonella-enterica-from-farm-animals-in-china
#19
Ting-Ting Cao, Guo-Hui Deng, Liang-Xing Fang, Run-Shi Yang, Jian Sun, Ya-Hong Liu, Xiao-Ping Liao
This study was focused on the prevalence and antimicrobial susceptibilities of Salmonella directly isolated at animal clinics in Guangdong, People's Republic of China. The isolation rates from chickens, ducks, and pigs were 11.3% (11 of 97 samples), 15.4% (53 of 344 samples), and 3.0% (13 of 434 samples), respectively. Among the 77 Salmonella enterica isolates, the most predominant serovar was Typhimurium (81.8%, 63 isolates), followed by serovars Meleagridis (2.6%, 2 isolates) and Abaetetuba (1.3%, 1 isolate)...
October 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28922025/prevalence-of-staphylococcal-enterotoxins-in-ready-to-eat-foods-sold-in-istanbul
#20
Beyza H Ulusoy, Burcu Çakmak Sancar, Muhsin Öztürk
The aim of this study was to investigate the prevalence of staphylococcal enterotoxins (SEs) in ready-to-eat (RTE) foods sold in Istanbul, Turkey. A total of 5,241 samples were randomly collected from various caterers, hotels, and restaurants from 2014 to 2016. The samples were classified into four groups: (i) various cooked RTE meat and vegetable meals, (ii) various RTE salads, charcuterie, and cold appetizers, (iii) various cooked RTE bakery products (pasta, pastries, pizza, pita, ravioli, etc.), and (iv) any cooked RTE sweets and desserts (pudding, custard, cream, ashura, etc...
October 2017: Journal of Food Protection
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