Research Publications (Food Safety)

Copper is an essential microelement for animals, and not only it has been used as a feed additive at pharmacological doses in swine production to improve growth performance, but it also has an effect on intestinal microbes by enhancing host bacterial resistance. However, there are few reports on the effects of pharmacological doses of copper on intestinal microorganisms and the antimicrobial resistance profiles of pathogenic bacteria, such as Escherichia coli, in pigs.

The role of the Type VI secretion system (T6SS) in Campylobacter jejuni is poorly understood despite an increasing prevalence of the T6SS in recent C. jejuni isolates in humans and chickens. The T6SS is a contractile secretion machinery capable of delivering effectors that can play a role in host colonization and niche establishment. During host colonization, C.

The Eastern Shore of Virginia (ESV) is a major agricultural region in Virginia and in the past has been linked to some tomato-associated outbreaks of salmonellosis. In this study, water samples were collected weekly from irrigation ponds and wells in four representative vegetable farms (Farms A–D, each farm paired with one pond and one well) and a creek as well. In addition, water samples from two sites in the Chesapeake Bay on the ESV were collected monthly.

United States dairy operations use antibiotics (primarily β-lactams and tetracyclines) to manage bacterial diseases in dairy cattle. Antibiotic residues, antibiotic-resistant bacteria (ARB), and antibiotic resistance genes (ARG) can be found in dairy manure and may contribute to the spread of antibiotic resistance (AR). Although β-lactam residues are rarely detected in dairy manure, tetracycline residues are common and perhaps persistent.

Characterizing and quantifying in situ metabolisms remains both a central goal and challenge for environmental microbiology. Here, we used a single-cell, multi-isotope approach to investigate the anabolic activity of marine microorganisms, with an emphasis on natural populations of Thaumarchaeota.

Control of Listeria monocytogenes in queso fresco and other fresh cheeses continues to be a challenge in the United States. These cheese types are particularly challenging due to their high moisture and high pH, which provide favorable conditions for the growth of L. monocytogenes. Protective cultures (i.e., viable strains of lactic acid bacteria that inhibit other microorganisms) have been investigated in foods such as meat as an alternative, clean-label control strategy for L.

ICEpMERPH, the first integrative conjugative element (ICE) of the SXT/R391 familyisolated in the United Kingdom and Europe, was analyzed to determine the nature of its adaptivefunctions, its genetic structure, and its homology to related elements normally found in pathogenicVibrio or Proteus species. Whole genome sequencing of Escherichia coli (E. coli) isolate K802 (whichcontains the ICEpMERPH) was carried out using Illumina sequencing technology.

Author(s): Songlin Guo, Le He, Liqun Wu, Yiqun Xiao, Shaowei Zhai, Qinpi Yan

Author(s): Sihang Zhu, Jingjing Zhao, Nan Zhao, Xiao Yang, Chong Chen, Jianying Shang

Author(s): Hamid Khaneghahi Abyaneh, Alireza Bahonar, Negin Noori, Hassan Yazdanpanah, Mohammad Hossein Shojaee AliAbadi

Ready‐to‐eat food contamination with ESBL‐producing Escherichia coli is a growing health concern. Some of these strains also are epidemic clones and can cause community‐associated infections that are difficult to treat. In this study, the occurrence of ESBL‐producing E. coli contaminated ready‐to‐eat street food in Quito‐Ecuador was evaluated. One hundred and fifty samples were collected randomly in the most crowded sites of the city.

Author(s): Taye O. Akinfala, Jos Houbraken, Michael Sulyok, Abiodun R. Adedeji, Adegboyega C. Odebode, Rudolf Krska, Chibundu N. Ezekiel

Orange juice is a major agricultural product, and oranges are among the most widely sold fresh fruits in several countries. Citrus black spot (CBS), caused by the fungus Phyllosticta citricarpa, affects almost every species of citrus, causing a esthetic depreciation of the fruit and fruit drop, with consequent financial loss for its in natura commercialization.

Author(s): Yuying Sun, Congcong Yan, Mengfei Liu, Yujie Liu, Wenzheng Wang, Wei Cheng, Fusheng Yang, Jiquan Zhang

Author(s): Felix K.A. Kuebutornye, Zhiwen Wang, Yishan Lu, Emmanuel Delwin Abarike, Michael Essien Sakyi, Yuan Li, Cai Xia Xie, Vivian Hlordzi

Author(s): Rodrigo C. Oliveira, Magda Carvajal-Moreno, Pedro Mercado-Ruaro, Francisco Rojo-Callejas, Benedito Correa

Author(s): Akbar Bahrami, Zahra Moaddabdoost Baboli, Keith Schimmel, Leonard Williams, Seid Mahdi Jafari

Author(s): Xuetong Li, Yuan Su, Huashuo Chu, Shuxia Lyu, Jingjing Tian, Wentao Xu

Author(s): J. Ortiz-Solà, A. Valero, I. Viñas, P. Colás-Medà, M. Abadias

Author(s): Vijay K. Juneja, Marangeli Osoria, C.-A. Hwang, Abhinav Mishra, T. Matthew Taylor

Author(s): Ana Paula M. Pereira, Henrique A. Stellari, Leonardo F. Vilela, Rosane F. Schwan, Anderson S. Sant’Ana

The exposure to mycotoxins of Swedish adolescents is currently unknown. The aim of the present study was to investigate the exposure to mycotoxins and their association with food intake, and background characteristics in adolescents of a national dietary survey. About 3000 school students (1000 from the 5th, 8th and 11th school years) were recruited for the survey.

Author(s): Nan Wu, Xuan Xu, Biao Wang, Xian-Mei Li, Ying-Yin Cheng, Ming Li, Xiao-Qin Xia, Yong-An Zhang

Author(s): Lu Qin, Jinhua Xiang, Fan Xiong, Guitang Wang, Hong Zou, Wenxiang Li, Ming Li, Shangong Wu

Author(s): Audrey L. Walter, Yiwei Ma, Chi Chen, Fernando Sampedro, Dennis Bayrock, Pedro E. Urriola, Gerald C. Shurson