You are here

Research Publications from Peer-Reviewed Journals

Fri, 06/05/2015 - 01:24
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...
Fri, 06/05/2015 - 01:24
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...
Fri, 06/05/2015 - 01:24
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...
Fri, 06/05/2015 - 01:24
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...
Fri, 06/05/2015 - 01:24
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...
Fri, 06/05/2015 - 01:24
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...
Fri, 06/05/2015 - 01:24
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...
Fri, 06/05/2015 - 01:24
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...
Fri, 06/05/2015 - 01:24
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...
Fri, 06/05/2015 - 01:24
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...
Fri, 06/05/2015 - 01:24
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...
Fri, 06/05/2015 - 01:24
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...
Fri, 06/05/2015 - 01:24
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...
Fri, 06/05/2015 - 01:24
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...
Fri, 06/05/2015 - 01:24
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...
Thu, 06/04/2015 - 06:20
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)...
Thu, 06/04/2015 - 06:20
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...
Thu, 06/04/2015 - 06:20
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...
Thu, 06/04/2015 - 06:20
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...
Thu, 06/04/2015 - 06:20
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...
Thu, 06/04/2015 - 06:20
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...
Thu, 06/04/2015 - 06:20
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...
Thu, 06/04/2015 - 06:20
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...
Thu, 06/04/2015 - 01:33
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...
Thu, 06/04/2015 - 01:33
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...

Pages