Research Publications (Food Safety)

The etiological agent of necrotic enteritis (NE) is Clostridium perfringens (CP), which is an economically significant problem for broiler chicken producers worldwide. Traditional use of in-feed antibiotic growth promoters to control NE disease have resulted in the emergence of antibiotic resistance in CP strains. Identification of probiotic bacteria strains as an alternative to antibiotics for the control of intestinal CP colonization is crucial.

The effects of lutein and conjugated linoleic acid (CLA) on growth performance and immune response of broiler chickens were evaluated in the presence and absence of Salmonella lipopolysaccharide (LPS) immune challenge. Cobb chicks (360; 1 to 22 d of age) were used in a 3 x 2 factorial arrangement of CLA (0, 1, and 2%) and lutein (0 and 50 mg/kg) dietary levels. At d 8 and 15, birds were injected with BSA to assess IgY production. At d 20, birds were injected with LPS.

Yong Xue, Jon G. Wilkes, Ted J. Moskal, Anna J. Williams, Willie M. Cooper, Rajesh Nayak, Fatemeh Rafii, Dan A. Buzatu

Listeriosis is a serious foodborne infection that disproportionately affects elderly adults, pregnant women, newborns, and immunocompromised individuals. Diagnosis is made by culturing Listeria monocytogenes from sterile body fluids or from products of conception. This report describes the investigations of two listeriosis pseudo-outbreaks caused by contaminated laboratory media made from sheep blood.

Prion diseases of cattle include the classical bovine spongiform encephalopathy (C-BSE) and the atypical H-type BSE (H-BSE) and L-type BSE (L-BSE) strains. Although the C- and L-BSE strains can be detected and discriminated by ultrasensitive real-time quaking-induced conversion (RT-QuIC) assays, no such test has yet been described for the detection of H-BSE or the discrimination of each of the major bovine prion strains.

A multiresidue analytical method using a modification of the “quick, easy, cheap, effective, rugged, and safe” (QuEChERS) sample preparation approach combined with liquid chromatography–tandem mass spectrometry (LC-MS/MS) analysis was established and validated for the rapid determination of 69 pesticides at different levels (1–100 ng/g) in wheat and rice straws.

The present study aims at the microbiological analysis of export oriented frozen fishes, namely, Jew fish, Tongue Sole fish, Cuttle fish, Ribbon fish, Queen fish, and fish processing water and ice from a view of public health safety and international trade. Microbiological analysis includes the determination of total viable aerobic count by standard plate count method and enumeration of total coliforms and fecal coliforms by most probable number method.

Publication date: Available online 24 February 2016


Author(s): Džiuginta Jakočiūnė, Ana Herrero-Fresno, Lotte Jelsbak, John Elmerdahl Olsen

Publication date: July 2016
Source:LWT - Food Science and Technology, Volume 70

Author(s): Yendouban Lamboni, Jens C. Frisvad, Kerstin Hell, Anita R. Linnemann, Rob M.J. Nout, Manuele Tamo, Kristian F. Nielsen, Martinus A.J.S. van Boekel, Eddy J. Smid

Publication date: August 2016
, Volume 66

Author(s): Lijun Han, Yelena Sapozhnikova, Steven J. Lehotay

Publication date: August 2016
, Volume 66

Author(s): Nathan A. Jarvis, Corliss A. O'Bryan, Steven C. Ricke, Michael G. Johnson, Philip G. Crandall

Publication date: August 2016
, Volume 66

Author(s): Walid Q. Alali, Cagatay Celik, Diezhang Wu, Yue Cui, Husnu S. Guran, David Mann

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To investigate whether the Luminex xMAP® Salmonella Serotyping Assay (xMAP SSA) is applicable to serotype Salmonella from humans in Southern China.

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Aims

The aims of this study were to assess the pathogenic potential, antimicrobial resistance and genotypic diversity of Salmonella Typhimurium strains isolated in Brazil from swine (22) and the surrounding swine environment (5) from 2000-2012 and compare them to the profiles of 43 human strains isolated from 1983-2010, which had been previously studied.

Microevolution associated with emergence and expansion of new epidemic clones of bacterial pathogens holds the key to epidemiologic success. To determine microevolution associated with monophasic Salmonella Typhimurium during an epidemic, we performed comparative whole-genome sequencing and phylogenomic analysis of isolates from the United Kingdom and Italy during 2005–2012.

The object of this study was to evaluate the safety and meat quality criteria in broilers following intramuscular injection of boldenone. Twenty-four broiler chicks, divided into two groups, were used in the present study. Boldenone was injected intramuscularly at a single-dose level of 5 mg/kg body weight into 12 broiler chicks at 2 weeks old; the other 12 chicks were injected with sesame oil and kept as controls.

Electrolyzed water is a sustainable disinfectant, which can comply with food safety regulations and is environmentally friendly. A two-factor central composite design was adopted for studying the effects of electrode gap and electric potential on chlorine generation efficiency of electrolyzed deep ocean water. Deep ocean water was electrolyzed in a glass electrolyzing cell equipped with platinum-plated titanium anode and cathode.

Publication date: August 2016
, Volume 66

Author(s): Xuewei Hao, Jing Li, Zhiliang Yao

Publication date: August 2016, Volume 66 Author(s): Abhay K. Grover, Shweta Chopra, Gretchen A. Mosher The Food Safety Modernization Act (FSMA) was signed into law in the United States in 2011, shifting the existing food safety focus from a reactive to a preventive approach. According to literature, legislative requirements of FSMA can be challenging for small food facilities affected by the regulations immediately or in near future.

Tinh Huu Nguyen, Van Thai Than, Hien Dang Thanh, Vu-Khac Hung, Duc Tan Nguyen, Wonyong Kim

Abstract

Publication date: Available online 22 February 2016


Author(s): Alexander A. Stakheev, Dina R. Khairulina, Sergey K. Zavriev