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Bacterial pathogens

Fri, 02/15/2019 - 01:14
Publication date: Available online 13 February 2019Source: LWTAuthor(s): Junsheng Liu, Zhennan Gu, Hao Zhang, Jianxin Zhao, Wei ChenAbstractSalmonellosis is one of the world's most leading epidemic diseases and poses a great threat to public health. Probiotic administration is an effective strategy to cope with pathogenic infections with few side-effects and a high safety profile. Lactobacillus...
Fri, 02/15/2019 - 01:12
Available online 13 February 2019 Author(s): Huibin Chen, Meiying Wang, Chengfeng Yang, Xuzhi Wan, Huihuang H. Ding, Yizhuo Shi, Chao ZhaoAbstractMicroorganisms harbored in oyster gills are potentially related to the spoilage and safety of oyster during storage. In this study, the microbial activities and pH changes of the gills of the two species, Crassostrea gigas and C. virginica, harvested...
Thu, 02/14/2019 - 01:14
Available online 12 February 2019 Author(s): Ana Cecilia Lorenzo-Leal, Enrique Palou, Aurelio López-MaloAbstractSeeds are usual source of contamination and their sprouts are commonly associated foodborne illness. Therefore, the aim of this study was to evaluate the antibacterial vapor phase efficiency of allspice, thyme and rosemary essential oils on two foodborne pathogens in in vitro and on...
Thu, 02/14/2019 - 01:14
Available online 13 February 2019 Author(s): Samantha Lindemann, Bertrand Colson, Robert Newkirk, Steffen Uhlig, Ravinder ReddyABSTRACTData collected from FDA proficiency tests (PT) during 2012-2018 was used to evaluate the performance of most probable number (MPN) and polymerase chain reaction (PCR) methods used to enumerate Vibrio parahaemolyticus in oyster samples. The primary aim was to...
Thu, 02/14/2019 - 01:11
Publication date: Available online 12 February 2019Source: LWTAuthor(s): G.A. Evrendilek, P. OzdemirAbstractFresh carrots were processed using ozone, ultrasonication, alkaline ionized water, and high pressure processing (HPP) as well as quantifying their effects on 28 food quality and safety responses. Out of the four treatments, HPP at 350 and 450 MPa for 5 min achieved the highest reductions by...
Thu, 02/14/2019 - 01:11
Publication date: Available online 11 February 2019Source: LWTAuthor(s): Fabio Coloretti, Cristiana Chiavari, Antonio Poeta, Mariantonietta Succi, Patrizio Tremonte, Luigi GraziaAbstractThe aim of this work is to fine tune a technology to produce horse meat sausages guaranteeing a rapid lowering of pH levels and optimising the sugar content to prevent structural and sensorial defects in the...
Wed, 02/13/2019 - 01:14
Available online 12 February 2019 Author(s): Ocen M. Olanya, Aaron K. Hoshide, Oluwatosin A. Ijabadeniyi, Dike O. Ukuku, Sudarsan Mukhopadhyay, Brendan A. Niemira, Olasunkanmi AyeniAbstractPeriodic outbreaks of foodborne pathogens have resulted in food safety concerns, due to health implications and cost consequences. Occurrence of Listeria monocytogenes in foods and listeriosis have been...
Tue, 02/12/2019 - 19:00
Campylobacter jejuni secretes HtrA (high temperature requirement protein A), a serine protease that is involved in virulence. Here, we investigated the interaction of HtrA with the host protein occludin, a tight ...
Tue, 02/12/2019 - 01:14
Publication date: Available online 11 February 2019Source: LWTAuthor(s): Tze Young Thung, Epeng Lee, Nor Ainy Mahyudin, Karunakaramoorthy Anuradha, Nurzafirah Mazlan, Chee Hao Kuan, Chai Fung Pui, Farinazleen Mohamad Ghazali, Nor-Khaizura Mahmud Ab Rashid, Wendy Dayang Rollon, Chia Wanq Tan, Son RaduAbstractIn the present study, a Salmonella Typhimurium-specific bacteriophage designated as ST02,...
Tue, 02/12/2019 - 01:12
Available online 10 February 2019 Author(s): Lurdes Clemente, Vera Manageiro, Ivone Correia, Ana Amaro, Teresa Albuquerque, Patrícia Themudo, Eugénia Ferreira, Manuela CaniçaAbstractWe screened 1840 Enterobacteriaceae isolates from food-producing animals, meat, meat products and animal feed, for the detection of plasmid-mediated colistin resistance, during 2010–2015. The mcr-1 gene was detected...
Tue, 02/12/2019 - 01:12
Available online 10 February 2019 Author(s): Chi-Hung Chen, Hsin-Bai Yin, Abhinav Upadhayay, Stephanie Brown, Kumar VenkitanarayananAbstractSalmonella enterica is a major human pathogen that is responsible for 23,000 hospitalizations annually in the United States. Contact with contaminated pet food and infected companion animals can transmit salmonellosis to humans. Recent multistate human...
Tue, 02/12/2019 - 00:00
Abstract Street foods are one of the important sources of foodborne infections and Staphylococcus aureus is an important infectious agent transmitted through various sources including street foods. The methicillin-resistant S. aureus (MRSA) are of public health significance, hence the study was taken to assess the street foods as a source of MRSA, for which 430 street vended...
Mon, 02/11/2019 - 11:14
Bacteria sense environmental chemicals using chemosensor proteins, most of which are present in the cytoplasmic membrane. Canonical chemoreceptors bind their specific ligands in their periplasmic domain, and the ligand binding creates a molecular stimulus that is transmitted into the cytoplasm, leading to various cellular responses, such as chemotaxis and specific gene expression. Vibrio cholerae...
Mon, 02/11/2019 - 11:14
Coxiella burnetii, the etiological agent of Q fever, undergoes a unique biphasic developmental cycle where bacteria transition from a replicating (exponential phase) large cell variant (LCV) form to a non-replicating (stationary phase) small cell variant (SCV) form. The alternative sigma factor RpoS is an essential regulator of stress responses and stationary phase physiology in several bacterial...
Mon, 02/11/2019 - 01:14
Publication date: Available online 8 February 2019Source: LWTAuthor(s): Helena Taina Diniz-Silva, Janaína Batista de Sousa, Jessica da Silva Guedes, Rita de Cássia Ramos do Egypto Queiroga, Marta Suely Madruga, Josean Fechine Tavares, Evandro Leite de Souza, Marciane MagnaniAbstractThe effects of Origanum vulgare L. (OVEO) and Rosmarinus officinalis L. (ROEO) essential oils in combination on the...
Sun, 02/10/2019 - 01:12
Available online 8 February 2019 Author(s): Gang Liu, Jinhua Yin, Bo Han, Herman W. Barkema, Muhammad Shahid, Jeroen De Buck, Eduardo R. Cobo, John P. Kastelic, Jian GaoAbstractAerococcus viridans, a firmicutes bacteria widespread in the environment, is increasingly isolated from humans and animals, especially cows with mastitis. However, its pathogenicity in the bovine mammary gland is unclear....
Sun, 02/10/2019 - 01:10
Publication date: Available online 8 February 2019 Innovative Food Science & Emerging TechnologiesAuthor(s): Cyrelys Collazo, Florence Charles, Ingrid Aguiló-Aguayo, Jesús Marín-Sáez, Tomás Lafarga, Maribel Abadias, Inmaculada ViñasAbstractThe efficacy of two irradiation technologies: Ultraviolet-C light (UV-C), applied in water or in diluted peroxyacetic acid, and dry-pulsed light (PL) for...
Sun, 02/10/2019 - 01:10
Publication date: Available online 8 February 2019 Innovative Food Science & Emerging TechnologiesAuthor(s): Sang Hui Lee, Juhui Choe, Dong Jin Shin, Hae In Yong, Yukyung Choi, Yohan Yoon, Cheorun JoAbstractWe evaluated the combined effect of high pressure (HP) and vinegar addition on control of Clostridium perfringens and quality in emulsion-type pork sausages. Sausages were manufactured...
Sat, 02/09/2019 - 01:13
Available online 7 February 2019 Author(s): Serap Cosansu, Vijay K. Juneja, Marangeli Osoria, Sudarsan MukhopadhyayAbstractThe heat resistance (57.5–65 °C) of a three-strain cocktail of Clostridium perfringens vegetative cells in sous vide processed ground beef supplemented with 0–3% grape seed extract (GSE) was quantified. The surviving cell population was enumerated on tryptose–sulfite–...
Sat, 02/09/2019 - 00:00
Abstract A gastroenteritis outbreak occurred in a university in May, 2017, Wuhan, China. The epidemiological survey and pathogen analysis were conducted to identify the pathogen and control this outbreak. Feces or anal swabs from individuals, water, and swabs taken from tap surfaces of the secondary water supply system (SWSS) and foods were collected for the detection of viruses...
Sat, 02/09/2019 - 00:00
Toxins, Vol. 11, Pages 101: Intact Staphylococcus Enterotoxin SEB from Culture Supernatant Detected by MALDI-TOF Mass Spectrometry Toxins doi: 10.3390/toxins11020101 Authors: Tonacini Stephan Vogel Avondet Kalman Crovadore Lefort Schnyder Routine identification of pathogens by MALDI-TOF MS (matrix-assisted laser desorption ionisation time-of-flight mass spectrometry...
Sat, 02/09/2019 - 00:00
Toxins, Vol. 11, Pages 100: Intact Staphylococcus Enterotoxin SEB from Culture Supernatant Detected by MALDI-TOF Mass Spectrometry Toxins doi: 10.3390/toxins11020100 Authors: Tonacini Stephan Vogel Avondet Kalman Crovadore Lefort Schnyder Routine identification of pathogens by MALDI-TOF MS (matrix-assisted laser desorption ionisation time-of-flight mass spectrometry...
Fri, 02/08/2019 - 17:00
James B. Thissen, Nicholas A. Be, Kevin McLoughlin, Shea Gardner, Paul G. Rack, Michael H. Shapero, Raymond R. R. Rowland, Tom Slezak, Crystal J. Jaing Microarrays have proven to be useful in rapid detection of many viruses and bacteria. Pathogen detection microarrays have been used to diagnose viral and bacterial infections in clinical samples and to evaluate the safety of biological drug...
Fri, 02/08/2019 - 01:13
Publication date: Available online 7 February 2019Source: LWTAuthor(s): Vijay Singh Chhetri, Marlene E. Janes, Joan M. King, William Doerrler, Achyut AdhikariAbstractThe use of sanitizers during produce wash operation is a common practice, but little is known about the effect of residual sanitizers on minimizing food safety risks associated with post-sanitizing cross-contaminations. This study...
Fri, 02/08/2019 - 01:12
Available online 6 February 2019 Author(s): Xinjie Song, Shruti Shukla, Myunghee KimAbstractCronobacter species are foodborne pathogens that pose a high risk in infant formula and can cause fatality rates of 40–80% in infected infants. To develop a rapid and easy detection method for Cronobacter species, especially in powdered infant formula (PIF), an immunoliposome-based immunochromatographic...
Fri, 02/08/2019 - 01:12
Available online 6 February 2019 Author(s): Véronique Bernier Gosselin, Simon Dufour, Pamela R.F. Adkins, Scott Poock, Patrick Pithua, John R. MiddletonAbstractThe objectives of this study were to 1) correlate pre-partum teat skin colonization with non-aureus staphylococcal (NAS) intramammary infection (IMI) in early lactation, and 2) evaluate infection dynamics of subclinical NAS IMI in goats...
Fri, 02/08/2019 - 01:12
Available online 7 February 2019 Author(s): Aline Morgan von Hertwig, Dionisio Pedro Amorim Neto, Elisabete Aparecida de Almeida, Monique Ribeiro Tibas Casas, Maristela da Silva do NascimentoAbstractThirty-Eight Salmonella isolates recovered from different stages of the peanut supply chain in three Brazilian States (São Paulo, Minas Gerais and Bahia) were subtyped by pulsed-field gel...
Fri, 02/08/2019 - 01:12
Available online 6 February 2019 Author(s): M. Faccia, G. Gambacorta, G. Natrella, F. CaponioAbstractItalian traditional mozzarella is a high moisture table cheese that is sold packaged in water for preserving freshness. Despite of the high foreign demand, high perishability limits export. For extending shelf life, the dairy industries have long been engaged in controlling the growth of spoilage...
Thu, 02/07/2019 - 16:07
Rui Pang, Tengfei Xie, Qingping Wu, Yanping Li, Tao Lei, Jumei Zhang, Yu Ding, Juan Wang, Liang Xue, Moutong Chen, Xianhu Wei, Youxiong Zhang, Shuhong Zhang, Xiaojuan Yang
Thu, 02/07/2019 - 01:13
Available online 4 February 2019 Author(s): Xinyi Pang, Hyun-Gyun YukAbstractThis study evaluated how the colonization sequence of Listeria monocytogenes and Pseudomonas fluorescens affects biofilm formation and biofilm cell response to food-related stress (desiccation or disinfection) as well as the transferability of L. monocytogenes to salmon products. The results showed that the colonization...
Thu, 02/07/2019 - 01:13
Publication date: January 2019 Innovative Food Science & Emerging Technologies, Volume 51Author(s): Maria Sanz-Puig, Adriana Velázquez-Moreira, Clara Torres, Jose Ángel Guerrero-Beltrán, Luis Miguel Cunha, Antonio Martinez, Dolores RodrigoAbstractThe goal of this study was to evaluate the development of Salmonella enterica subsp. enterica serovar Typhimurium resistance against Pulsed Electric...
Thu, 02/07/2019 - 01:13
Available online 6 February 2019 Author(s): Ti Lu, Hyesuk Seo, Rodney A Moxley, Weiping ZhangAbstractK88 and F18 fimbrial enterotoxigenic Escherichia coli (ETEC) are the major causes of post-weaning diarrhea (PWD) in pigs. A vaccine that induces broad immunity to prevent K88 and F18 fimbrial ETEC bacterial attachment and colonization in pig small intestines and to neutralize enterotoxin...
Thu, 02/07/2019 - 01:13
Available online 5 February 2019 Author(s): Ting He, Yao-Hong Zhu, Jiao Yu, Bing Xia, Xiao Liu, Gui-Yan Yang, Jin-Hui Su, Liang Guo, Meng-Ling Wang, Jiu-Feng WangABSTRACTIn the current study, we screened Lactobacillus strains isolated from the colon of clinically healthy weaned piglets for potential probiotic properties and isolated L. johnsonii L531, which produced high levels of beneficial...
Thu, 02/07/2019 - 01:13
Available online 6 February 2019 Author(s): Grażyna Budryn, Elżbieta Klewicka, Joanna Grzelczyk, Ilona Gałązka-Czarnecka, Radosław MostowskiAbstractLegume seeds and sprouts are a rich source of phytoestrogens in the form of isoflavonoids. For the first time, lactic acid fermentation of four types of legume sprouts was used to increase the content of isoflavonoids and microbiological safety. After...
Thu, 02/07/2019 - 01:13
Available online 31 January 2019 Author(s): S. Deshaware, S. Gupta, R. Singhal, P.S. VariyarAbstractDebittered bitter gourd juice was subjected to gamma irradiation doses of 0, 0.25, 0.5, 0.75, 1, 1.5 and 2.5 kGy and thermal pasteurization at temperatures of 65, 75, 85 and 95°C. Shigella boydii was the most heat resistant pathogen tested (D10 of 42.8 s at 65 ⁰C) while Bacillus cereus was the most...
Thu, 02/07/2019 - 01:10
Publication date: Available online 5 February 2019Source: LWTAuthor(s): Sofie Buhler, Federico Solari, Alessandra Gasparini, Roberto Montanari, Stefano Sforza, Tullia TedeschiAbstractWhey is a valuable by-product of the dairy industry, due to the high nutritional, biochemical and functional properties of the contained proteins. As for other dairy products, to guarantee the microbiological safety...
Thu, 02/07/2019 - 00:00
Abstract Nisin is frequently added as food additive to soft cheese to increase food safety against foodborne pathogens like Listeria monocytogenes. The goal of this study was the extension of the antimicrobial activity of nisin in sour curd cheese (SCC) by self-releasing adsorbed nisin from Neusilin UFL2 over production-based pH shift. First, the antimicrobial activity of nisin...
Wed, 02/06/2019 - 11:00
Salmonella spp. are estimated to cause 1.2 million cases of human foodborne illness each year in the United States, and pigs can often be asymptomatically colonized with Salmonella spp. (>50% of farms). Recent reports state that 18.3% of Salmonella enterica serovar Typhimurium isolates are resistant to ≥3 antimicrobial classes, and multidrug-resistant (MDR) strains are associated with an...
Wed, 02/06/2019 - 11:00
Poultry are considered a major reservoir and source of human campylobacteriosis, but the roles of environmental reservoirs, including wild birds, have not been assessed in depth. In this study, we isolated and characterized Campylobacter jejuni from western jackdaws (n = 91, 43%), mallard ducks (n = 82, 76%), and pheasants (n = 9, 9%). Most of the western jackdaw and mallard duck C. jejuni...
Wed, 02/06/2019 - 11:00
Inappropriate and disproportionate use of antibiotics is contributing immensely to the development of antibiotic resistance in bacterial species associated with food contamination. The use of natural products in combination can be a potent alternative hurdle strategy to inactivate foodborne pathogens. Here, we explored the pro-oxidant properties of essential oil linalool and vitamin C in...
Wed, 02/06/2019 - 11:00
The hypersaline Kebrit Deep brine pool in the Red Sea is characterized by high levels of toxic heavy metals. Here, we describe two structurally related mercuric reductases (MerAs) from this site which were expressed in Escherichia coli. Sequence similarities suggest that both genes are derived from proteobacteria, most likely the Betaproteobacteria or Gammaproteobacteria. We show that one of the...
Wed, 02/06/2019 - 01:12
Tengfei Xie, Rui Pang, Qingping Wu, Juemei Zhang, Tao Lei, Yanping Li, Juan Wang, Yu Ding, Moutong Chen, Jianlin Bai
Wed, 02/06/2019 - 01:08
Available online 3 February 2019 Author(s): Matthias Ziegler, David Kent, Roger Stephan, Claudia GuldimannAbstractListeriosis is a food borne disease associated with high hospitalization and fatality rates; in 2014, EU member states reported 2194 cases with 98.9% hospitalization rates and 210 fatalities. Proper risk analysis and the development of effective food safety strategies critically...
Wed, 02/06/2019 - 01:08
Publication date: Available online 5 February 2019Source: Microbial Risk AnalysisAuthor(s): Chia Wanq Tan, Tan Turk Hsern Malcolm, Jayasekara Mudiyanselage Krishanthi Jayarukshi Kumari Premarathne, Chia Yeung New, Chee Hao Kuan, Tze Young Thung, Wei San Chang, Yuet Ying Loo, Yaya Rukayadi, Yoshitsugu Nakaguchi, Mitsuaki Nishibuchi, Son RaduAbstractA preliminary quantitative microbial risk...
Wed, 02/06/2019 - 01:08
Publication date: December 2018Source: Microbial Risk Analysis, Volume 10Author(s): Lena Fritsch, Laurent Guillier, Jean-Christophe AugustinAbstractRecent developments in genome sequencing open new opportunities for explaining the intraspecific variability of phenotypes (e.g. virulence, growth behavior). Successful association between WGS-data and specific phenotypes is thought to contribute to...
Wed, 02/06/2019 - 01:08
Publication date: August 2018Source: Microbial Risk Analysis, Volume 9Author(s): Kerry A. Hamilton, Arlene Chen, Emmanuel de-Graft Johnson, Anna Gitter, Sonya Kozak, Celma Niquice, Amity G. Zimmer-Faust, Mark H. Weir, Jade Mitchell, Patrick L. GurianAbstractThe use of aquaculture is increasing to meet the growing global demand for seafood. However, the use of aquaculture for seafood production...
Wed, 02/06/2019 - 01:08
Publication date: August 2018Source: Microbial Risk Analysis, Volume 9Author(s): Mary E. Schoen, Michael A. Jahne, Jay GarlandAbstractWe assessed the annual probability of infection resulting from non-potable exposures to distributed greywater and domestic wastewater treated by an aerobic membrane bioreactor (MBR) followed by chlorination. A probabilistic quantitative microbial risk assessment...

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