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Research Publications from Peer-Reviewed Journals
Investigation into Formation of Lipid Hydroperoxides from Membrane Lipids in Escherichia coli O157:H7 following Exposure to Hot Water
Cálix-Lara, Thelma F. et al.
Jackson, Emily E. et al.
Antolak, Hubert et al.
Karns, Jeffrey S. et al.
Assessment of the Prevalence of Extended-Spectrum β-Lactamase–Producing Enterobacteriaceae in Ready-to-Eat Salads, Fresh-Cut Fruit, and Sprouts from the Swiss Market
Nüesch-Inderbinen, Magdalena et al.
Detection and Quantification of Gluten during the Brewing and Fermentation of Beer Using Antibody-Based Technologies
Panda, Rakhi et al.
Toxoplasmosis-Related Knowledge and Preventive Practices among Undergraduate Female Students in Jordan
Al-Sheyab, Nihaya A. et al.
Effect of Acidified Sorbate Solutions on the Lag-Phase Durations and Growth Rates of Listeria monocytogenes on Meat Surfaces
Hwang, Cheng-An et al.
Comparative Study on the Efficacy of Bacteriophages, Sanitizers, and UV Light Treatments To Control Listeria monocytogenes on Sliced Mushrooms (Agaricus bisporus)
Murray, Kayla et al.
Methicillin-Resistant Staphylococcus aureus in Raw Milk: Prevalence, SCCmec Typing, Enterotoxin Characterization, and Antimicrobial Resistance Patterns
Riva, Alessandra et al.
Irrigation Is Significantly Associated with an Increased Prevalence of Listeria monocytogenes in Produce Production Environments in New York State
Weller, Daniel et al.
Growth of Salmonella enterica and Listeria monocytogenes on Fresh-Cut Cantaloupe under Different Temperature Abuse Scenarios
Huang, Jingwei et al.
Interlaboratory Validation for a Real-Time PCR Salmonella Detection Method Using the ABI 7500 FAST Real-Time PCR System
Cheng, Chorng-Ming et al.
Development of a Dry Inoculation Method for Thermal Challenge Studies in Low-Moisture Foods by Using Talc as a Carrier for Salmonella and a Surrogate (Enterococcus faecium)
Enache, Elena et al.
Inactivation of Escherichia coli O157:H7 on Orange Fruit Surfaces and in Juice Using Photocatalysis and High Hydrostatic Pressure
Yoo, Sungyul et al.
Effects of Plant-Derived Extracts, Other Antimicrobials, and Their Combinations against Escherichia coli O157:H7 in Beef Systems
Ko, Kyung Yuk et al.
Assessing the Status of Food Safety Management Systems for Fresh Produce Production in East Africa: Evidence from Certified Green Bean Farms in Kenya and Noncertified Hot Pepper Farms in Uganda
Nanyunja, J. et al.
Xu, Aixia et al.
Scharff, Robert L. et al.
Myxozoans and Our Dinner Table: Pathogenicity Studies of Myxobolus honghuensis (Myxosporea: Bivalvulida) Using a Suckling Mice Model
Foodborne Pathogens and Disease , Vol. 0, No. 0.
Inactivation of Listeria monocytogenes using Water Bath Heat Treatment in Vacuum Packed Ricotta Salata Cheese Wedges
Ricotta salata cheese is frequently contaminated on the surface with Listeria monocytogenesWater bath heat treatment in vacuum packed whole ricotta salata cheese wheels demonstrated to be effective in inactivating L. monocytogenes. However, the risk of cross-contamination in ricotta salata wedges is increased during cheese cutting. Therefore, the effectiveness of heat treatment in ricotta salata...
Distribution and Characterization of Salmonella enterica Isolates from Irrigation Ponds in the Southeastern United States [Environmental Microbiology]
Irrigation water has been implicated as a likely source of produce contamination by Salmonella enterica. Therefore, the distribution of S. enterica was surveyed monthly in irrigation ponds (n = 10) located within a prime agricultural region in southern Georgia and northern Florida. All ponds and 28.2% of all samples (n = 635) were positive for Salmonella, with an overall geometric mean...
Dynamic Response of Mycobacterium vanbaalenii PYR-1 to BP Deepwater Horizon Crude Oil [Biodegradation]
We investigated the response of the hydrocarbon-degrading Mycobacterium vanbaalenii PYR-1 to crude oil from the BP Deepwater Horizon (DWH) spill, using substrate depletion, genomic, and proteome analyses. M. vanbaalenii PYR-1 cultures were incubated with BP DWH crude oil, and proteomes and degradation of alkanes and polycyclic aromatic hydrocarbons (PAHs) were analyzed at four time points over 30...
Selection and Characterization of Phage-Resistant Mutant Strains of Listeria monocytogenes Reveal Host Genes Linked to Phage Adsorption [Food Microbiology]
Listeria-infecting phages are readily isolated from Listeria-containing environments, yet little is known about the selective forces they exert on their host. Here, we identified that two virulent phages, LP-048 and LP-125, adsorb to the surface of Listeria monocytogenes strain 10403S through different mechanisms. We isolated and sequenced, using whole-genome sequencing, 69 spontaneous mutant...
Dynamics of Escherichia coli Virulence Factors in Dairy Herds and Farm Environments in a Longitudinal Study in the United States [Public and Environmental Health Microbiology]
Pathogenic Escherichia coli or its associated virulence factors have been frequently detected in dairy cow manure, milk, and dairy farm environments. However, it is unclear what the long-term dynamics of E. coli virulence factors are and which farm compartments act as reservoirs. This study assessed the occurrence and dynamics of four E. coli virulence factors (eae, stx1, stx2, and the gamma...
Comparative Genotypic and Phenotypic Analysis of Cronobacter Species Cultured from Four Powdered Infant Formula Production Facilities: Indication of Pathoadaptation along the Food Chain [Spotlight]
Cronobacter species are opportunistic pathogens commonly found in the environment. Among the seven Cronobacter species, Cronobacter sakazakii sequence type 4 (ST-4) is predominantly associated with recorded cases of infantile meningitis. This study reports on a 26-month powdered infant formula (PIF) surveillance program in four production facilities located in distinct geographic regions. The...
Heat Shock-Enhanced Conjugation Efficiency in Standard Campylobacter jejuni Strains [Public and Environmental Health Microbiology]
Campylobacter jejuni, the leading bacterial cause of human gastroenteritis in the United States, displays significant strain diversity due to horizontal gene transfer. Conjugation is an important horizontal gene transfer mechanism contributing to the evolution of bacterial pathogenesis and antimicrobial resistance. It has been observed that heat shock could increase transformation efficiency in...
Spatial, Temporal, and Matrix Variability of Clostridium botulinum Type E Toxin Gene Distribution at Great Lakes Beaches [Environmental Microbiology]
Clostridium botulinum type E toxin is responsible for extensive mortality of birds and fish in the Great Lakes. The C. botulinum bontE gene that produces the type E toxin was amplified with quantitative PCR from 150 sloughed algal samples (primarily Cladophora species) collected during summer 2012 from 10 Great Lakes beaches in five states; concurrently, 74 sediment and 37 water samples from four...
Recent Emergence of Escherichia coli with Cephalosporin Resistance Conferred by blaCTX-M on Washington State Dairy Farms [Environmental Microbiology]
Enterobacteriaceae-associated blaCTX-M genes have become globally widespread within the past 30 years. Among isolates from Washington State cattle, Escherichia coli strains carrying blaCTX-M (CTX-M E. coli strains) were absent from a set of 2008 isolates but present in a set of isolates from 2011. On 30 Washington State dairy farms sampled in 2012, CTX-M E. coli prevalence was significantly...
VirR-Mediated Resistance of Listeria monocytogenes against Food Antimicrobials and Cross-Protection Induced by Exposure to Organic Acid Salts [Food Microbiology]
Formulations of ready-to-eat (RTE) foods with antimicrobial compounds constitute an important safety measure against foodborne pathogens such as Listeria monocytogenes. While the efficacy of many commercially available antimicrobial compounds has been demonstrated in a variety of foods, the current understanding of the resistance mechanisms employed by L. monocytogenes to counteract these...
Combining Lactic Acid Spray with Near-Infrared Radiation Heating To Inactivate Salmonella enterica Serovar Enteritidis on Almond and Pine Nut Kernels [Food Microbiology]
The aim of this study was to investigate the efficacy of near-infrared radiation (NIR) heating combined with lactic acid (LA) sprays for inactivating Salmonella enterica serovar Enteritidis on almond and pine nut kernels and to elucidate the mechanisms of the lethal effect of the NIR-LA combined treatment. Also, the effect of the combination treatment on product quality was determined. Separately...
Pyrosequencing reveals shifts in the bacterial epimural community relative to dietary concentrate amount in goats
Publication date: Available online 4 June 2015 Author(s): S.U. Wetzels , E. Mann , B.U. Metzler-Zebeli , M. Wagner , F. Klevenhusen , Q. Zebeli , S. Schmitz-Esser Ecological balance in the rumen is highly sensitive to concentrate-rich diets. Yet the effects of these feeding practices on the caprine bacterial epimural microbiome (CBEM), a microbial community with putative important...
Acrylamide in Chips and French Fries: a Novel and Simple Method Using Xanthydrol for Its GC-MS Determination
Diverse methodologies are available for quantification of acrylamide (AA), a recent known food-borne toxin. However, these methodologies involve complex, lengthy, and expensive procedures. In this work, a simple method based on a recently developed AA derivatization technique using xanthydrol, avoiding any time-consuming cleanup step, was optimized in order to be applied to...
Validation of a QuEChERS-Based Gas Chromatographic Method for Multiresidue Pesticide Analysis in Fresh Peppermint Including Studies of Matrix Effects
A convenient analytical method for quantitative characterization of 46 pesticides in fresh peppermint (a plant with high chlorophyll content) has been developed. The plant samples were extracted with acetonitrile and then with graphitized carbon black (GCB), and primary–secondary amine (PSA) was added to dispersive solid phase extraction tubes in order to reduce chlorophyll...
Quantification of Penicillium nalgiovense on Dry-Cured Sausage ‘Salchichón’ Using a SYBR Green-Based Real-Time PCR
To evaluate the effective implantation of a specific protective culture of Penicillium nalgiovense, a real-time quantitative PCR (qPCR) using SYBR Green methodology was developed. Two specific primers were designed on the basis of the published partial sequences of the Internal Transcribe Spacer (ITS)1–5.8S-ITS2 region of various strains of P. nalgiovense. Using the developed...
Application of ultrasound and chemical sanitizers to watercress, parsley and strawberry: Microbiological and physicochemical quality
Publication date: October 2015 Source:LWT - Food Science and Technology, Volume 63, Issue 2 Author(s): Jackline Freitas Brilhante de São José , Maria Cristina Dantas Vanetti This study aimed to evaluate the effectiveness of the use of ultrasound combined with chemical sanitizers for the decontamination of watercress, parsley and strawberries. Samples were treated with ultrasound (45 kHz)...
A chemometric processing-factor-based approach to the determination of the fates of five pesticides during apple processing
Publication date: October 2015 Source:LWT - Food Science and Technology, Volume 63, Issue 2 Author(s): Minmin Li , Yanan Liu , Bei Fan , Jia Lu , Yan He , Zhiqiang Kong , Yulong Zhu , Qiu Jian , Fengzhong Wang Food safety, especially with respect to pesticide-contaminated products, has received considerable attention in recent years. In this study, the effects of food processing...
Publication date: October 2015 Source:LWT - Food Science and Technology, Volume 63, Issue 2 Author(s): Ferhat Yuksel , Kevser Karaman In the present study, production and using possibilities of powder of macaroni boiling water (PMBW) were investigated. After cooking process of macaroni, firstly pre-drying was carried out at 50 °C in a drying oven and then lyophilization process was...
Publication date: October 2015 Source:LWT - Food Science and Technology, Volume 63, Issue 2 Author(s): Ghada M. Khiralla , Bahig A. El-Deeb Microbial biofilms, which characterized by their resistance to the traditional antimicrobials, are considered as a renewable source of contamination by pathogens. As alternative antimicrobial and antibiofilm agent selenium nanoparticles (SeNPs) were...
Fatty acid profile and bacteriological quality of caiman meat subjected to high hydrostatic pressure
Publication date: October 2015 Source:LWT - Food Science and Technology, Volume 63, Issue 2 Author(s): Anna C.V.C.S. Canto , Bruno R.C. Costa-Lima , Surendranath P. Suman , Maria Lucia G. Monteiro , Eliane T. Marsico , Carlos A. Conte-Junior , Robson M. Franco , Ana Paula A.A. Salim , Renata Torrezan , Teofilo J.P. Silva Our objective was to examine the effects of high hydrostatic...
Publication date: October 2015 Source:LWT - Food Science and Technology, Volume 63, Issue 2 Author(s): Rekha Priyadarshini Albert Dhayakaran , Suresh Neethirajan , Jun Xue , John Shi Pathogenic biofilms that form on food processing equipment/surfaces are of great concern, because these can readily lead to food spoilage, bio-fouling, food-borne illness, and their recalcitrance can result...
Survival of Lactobacillus rhamnosus EM1107 in simulated gastrointestinal conditions and its inhibitory effect against pathogenic bacteria in semi-hard goat cheese
Publication date: October 2015 Source:LWT - Food Science and Technology, Volume 63, Issue 2 Author(s): Fernanda Rodrigues Leite Rolim , Karina Maria Olbrich dos Santos , Samuel Carneiro de Barcelos , Antônio Sílvio do Egito , Thais Santana Ribeiro , Maria Lúcia da Conceição , Marciane Magnani , Maria Elieidy Gomes de Oliveira , Rita de Cássia Ramos do Egypto Queiroga This study...
Publication date: November 2015 Source:LWT - Food Science and Technology, Volume 64, Issue 1 Author(s): Şeniz Karabıyıklı , Nilgün Öncül , Hande Cevahiroğlu Pastrami is a traditional and popular meat product which is produced from whole muscle obtained from beef carcasses. Consumers prefer pastrami produced by small scale firms or local butchers, as a result of common estimation about...
Simultaneous determination of aflatoxin B1 and M1 in milk, fresh milk and milk powder by LC-MS/MS utilising online turbulent flow chromatography
Determination of aflatoxin M1 in breast milk as a biomarker of maternal and infant exposure in Colombia
10.1080/19440049.2015.1049563Gonzalo J. Diaz
Multi-Province Listeriosis Outbreak Linked to Contaminated Deli Meat Consumed Primarily in Institutional Settings, Canada, 2008
Foodborne Pathogens and Disease , Vol. 0, No. 0.
Antimicrobial Effects of Nisin, Essential Oil, and γ-Irradiation Treatments against High Load of Salmonella typhimurium on Mini-carrots
This study aimed at using essential oilEO) alone or combined EO with nisin and γ-irradiation to control Salmonella Typhimurium during the refrigerated storage of mini-carrots. Peeled mini-carrots were inoculated with S. Typhimurium at a final concentration of approximately 7 log CFU/g. Inoculated samples were coated by 5 different coating solutions: (i) nisin solution at final concentration of...
Effect of milk fat content on the performance of ohmic heating for inactivation of Escherichia coli O157:H7, Salmonella enterica Serovar Typhimurium and Listeria monocytogenes
Aims The effect of milk fat content on ohmic heating compared to conventional heating for inactivation of food-borne pathogens was investigated. Methods and Results Sterile cream was mixed with sterile buffered peptone water and adjusted to 0, 3, 7, 10% (w/v) milk fat content. These samples with varying fat content were subjected to ohmic and conventional heating. The effect of milk fat on...