Research Publications (Food Safety)

Preservative agents determining the shelf life of cosmetic products must have effective antimicrobial activity while meeting safety requirements for topical use. In this study, we determined the antimicrobial activity of 1,2-hexanediol against several Gram-positive and Gram-negative bacteria. Antimicrobial susceptibility tests have shown that 1,2-hexanediol exhibits broad-spectrum activity against Gram-positive and Gram-negative bacteria with MICs of 0.5 – 2% (v v−1).

Publication date: July 2015
, Volume 53
Author(s): Tomoaki Hagiwara , Saki Hagihara , Akihiro Handa , Nobuyuki Sasagawa , Risa Kawashima , Takaharu Sakiyama

Natalia M. Grindler, Jenifer E. Allsworth, George A. Macones, Kurunthachalam Kannan, Kimberly A. Roehl, Amber R. Cooper

Objective

Endocrine-disrupting chemicals (EDCs) adversely affect human health. Our objective was to determine the association of EDC exposure with earlier age of menopause.

Methods

Mohammad Mokhtari, Mazlan Abd Ghaffar, Gires Usup, Zaidi Che Cob

Massimo Maddaloni, Irina Kochetkova, SangMu Jun, Gayle Callis, Theresa Thornburg, David W. Pascual

Matthew Darby, Corinna Schnoeller, Alykhan Vira, Fiona Culley, Saeeda Bobat, Erin Logan, Frank Kirstein, Jürgen Wess, Adam F. Cunningham, Frank Brombacher, Murray E. Selkirk, William G. C. Horsnell

The majority of foodborne illness outbreaks can be linked to cross-contamination events through contact with contaminated surfaces. Consequently, there is a sustained interest in developing antimicrobial coatings such as silver zeolite to reduce contamination levels. In this study, we examined the efficacy of silver zeolite for preventing biofilm formation by common foodborne pathogens such as Listeria innocua Seeliger and Escherichia coli O157:H7.

Publication date: July 2015
, Volume 53
Author(s): Vicente M. Gómez-López , María I. Gil , Ana Allende , Bert Vanhee , María V. Selma

Publication date: July 2015
, Volume 53
Author(s): Joice Sifuentes Dos Santos , Thiago Guilherme Schwanz , Andreia Niederauer Coelho , Marla Cristina Heck-Marques , Marisa Marroni Mexia , Tatiana Emanuelli , Ijoni Costabeber

The antimicrobial effect of spice-based marinades against Campylobacter jejuni on inoculated fresh broiler wings was investigatedExperiments were carried out with 1 strain of C. jejuni and 6 marinades. Four experimental marinades were composed for the study and contained spices (thyme, rosemary, basil, marjoram, and so on) and different combination of bioactive compounds.

Morcela de ArrozMA) is a ready-to-eat blood and rice cooked sausage produced with pork, blood, rice, and seasonings, stuffed in natural casing and cooked above 90 °C/30 min. It is commercialized whole, not packed, with a restricted shelf life (1 wk/0 to 5 °C). The objective of this work was to establish sliced MA shelf life considering both the behavior of L.

Various compounds found in peanutArachis hypogaea) have been shown to provide multiple benefits to human health and may influence the growth of a broad range of gut bacteria. In this study, we investigated the effects of peanut white kernel and peanut skin on 3 strains of Lactobacillus and 3 major foodborne enteric bacterial pathogens.

The aim of this study was to evaluate the performance of immunodetection methods and PCR analysis of enterotoxigenic Bacillus cereus strains. Methods and Results Eighty-eight enterotoxigenic B. cereus group strains linked to foodborne outbreaks and illnesses were studied with 30 exclusivity non-enterotoxigenic strains including B. amyoliquifaciens, B. subtilis, S. aureus, Salmonella, and E. coli for this assessment.

Je-Wen Liou, Yu-Jiun Hung, Chin-Hao Yang, Yi-Cheng Chen

The ability to form biofilms is critical for environmental survival and transmission of Vibrio cholerae, a facultative human pathogen responsible for the disease cholera. Biofilm formation is controlled by several transcriptional regulators and alternative sigma factors. In this study, we report that the two main positive regulators of biofilm formation, VpsR and VpsT bind to non-overlapping target sequences in the regulatory region of vpsL in vitro.

Publication date: July 2015
, Volume 53
Author(s): A. Rebecchi , V. Pisacane , M.L. Callegari , E. Puglisi , L. Morelli

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Because of their small size, bacterial cells have long kept details about their inner workings a secret. We are starting to decipher their mechanistic secrets, in no small part due to the development of single-molecule and super-resolution fluorescence imaging, the subject of the 2014 Nobel Prize in Chemistry. These new methods have yielded a surge of discoveries about the subcellular organization and dynamics inside microbes.

The Rid family of proteins is highly conserved and broadly distributed throughout the domains of life. Genetic and biochemical studies, primarily in Salmonella enterica, have defined a role for RidA in responding to endogenously generated reactive metabolites. The data show that 2-aminoacrylate (2AA), a reactive enamine intermediate generated by some pyridoxal 5'-phosphate (PLP)-dependent enzymes, accumulates in the absence of RidA.

Though several studies have evaluated the association between food safety training and behavior, little has investigated different training components in association with food handlers’ performance.

The food safety criteria that have been incorporated in European regulation (EC) N°2073/2005 (Commission regulation, 2005), for Listeria monocytogenes in ready-to eat (RTE) foods, specify a maximum allowable concentration of 100 cfu.g−1 or ml−1. Some factors such as pH, salt and modified atmosphere packaging (MAP) are used to prevent the growth of L. monocytogenes in order to comply with the limit. Interactions between background microflora (BM) and L.