Research Publications (Food Safety)

Hao, Jianxiong et al. Leafy vegetables are the major source of nitrite intake in the human diet, and technological processing to control nitrite levels in harvested vegetables is necessary. In the current work, the effect of electrolyzed oxidizing water (EOW) on the nitrite and nitrate levels in fresh spinach during storage was studied.

Nyarko, Esmond et al. Fourier transform infrared (FT-IR) spectroscopy was used to differentiate mixed strains of Listeria monocytogenes and mixed strains of L. monocytogenes and Listeria innocua. FT-IR spectroscopy was also applied to investigate the hypothesis that heat-injured and acid-injured cells would return to their original physiological integrity following repair. Thin smears of cells on infrared slides were prepared from cultures for mixed strains of L.

Pala, Çi&#287 et al. The effects of ultrasound treatment at various amplitudes (50, 75, and 100%) and times (0, 6, 12, 18, 24, and 30 min) on Escherichia coli ATCC 25922 (a surrogate for E. coli O157:H7) and Saccharomyces cerevisiae ATCC 2366 levels and physicochemical characteristics (monomeric anthocyanins, color values, total phenolics, pH, and soluble solids) were determined in pomegranate juice. More than a 5-log inactivation of E. coli ATCC 25922 and a 1.36-log inactivation of S.

Heredia, Norma et al. Several methods have been described to prepare fresh produce samples for microbiological analysis, each with its own advantages and disadvantages. The aim of this study was to compare the performance of a novel combined rinse and membrane filtration method to two alternative sample preparation methods for the quantification of indicator microorganisms from fresh produce.

Martinez, Bismarck et al. Escherichia coli O157:H7 is a human pathogen that can cause bloody diarrhea, hemorrhagic colitis, and hemolytic uremic syndrome. E. coli O157:H7 illnesses are mainly associated with undercooked beef; however, in recent years, outbreaks have been linked to fresh produce, such as spinach, lettuce, and sprouts. In 2009, flour was implicated as the contamination source in an outbreak involving consumption of raw cookie dough that resulted in 77 illnesses.

Liao, Yen-Te et al. Non-O157 Shiga toxin–producing Escherichia coli (STEC) is an emerging risk for food safety. Although numerous postharvest antimicrobial interventions have been effectively used to control E. coli O157:H7 during beef harvesting, research regarding their effectiveness against non-O157 STEC is scarce.

Kalchayanand, Norasak et al. Several antimicrobial compounds have been used in commercial meat processing plants for decontamination of pathogens on beef carcasses, but there are many commercially available, novel antimicrobial compounds that may be more effective and suitable for use in beef processing pathogen-reduction programs.

Maradiaga, Martha et al. Salmonella continues to cause a considerable number of foodborne illnesses worldwide. The sources of outbreaks include contaminated meat and produce. The purpose of this study was to establish an initial investigation of the burden of Salmonella in produce and beef from Honduras by sampling retail markets and abattoirs.

Bovo, Federica et al. Food service and retail sectors offer consumers a variety of mixed ingredient salads that contain fresh-cut vegetables and other ingredients such as fruits, nuts, cereals, dairy products, cooked seafood, cooked meat, cured meats, or dairy products obtained from external suppliers. Little is known about the behavior of enteric bacterial pathogens in mixed ingredient salads. A model system was developed to examine the fate of Salmonella enterica (inoculum consisting of S.

Cates, Sheryl C. et al. Noroviruses (NoVs) are the leading cause of foodborne disease in the United States; however, little is known about consumers' knowledge of NoV infection and their understanding of how to prevent and control associated illness. A nationally representative Web-enabled panel survey of U.S. adults (n = 1,051) was conducted to collect information on consumers' awareness and knowledge of NoVs.

Publication date: August 2015
, Volume 54
Author(s): Silvia de la Cruz , Carolina Cubillos-Zapata , Inés María López-Calleja , Satyabrata Ghosh , Marcos Alcocer , Isabel González , Rosario Martín , Teresa García

Publication date: August 2015
, Volume 54
Author(s): Murad A. Al-Holy , Barbara A. Rasco

Publication date: August 2015
, Volume 54
Author(s): Noojaree Sonsa-Ard , Sureelak Rodtong , Michael L. Chikindas , Jirawat Yongsawatdigul

Publication date: August 2015
, Volume 54
Author(s): M. Montserrat , D. Sanz , T. Juan , A. Herrero , L. Sánchez , M. Calvo , María D. Pérez

Publication date: August 2015
, Volume 54
Author(s): Çiğdem Soysal , Hüseyin Bozkurt , Engin Dirican , Mehmet Güçlü , Ebru Deniz Bozhüyük , Ali Erdal Uslu , Sevim Kaya

Publication date: August 2015
, Volume 54
Author(s): Tjaša Prevc , Nataša Šegatin , Polonca Kralj , Nataša Poklar Ulrih , Blaž Cigić

Sanbao large yellow croaker is a kind of Chinese salted and fermented seafood processed by adding 50of salt and fermenting at high temperature [around 30 °C] over 20 d.

Publication date: 18 May 2015
, Volume 201
Author(s): Y.B. Kim , H.W. Kim , M.K. Song , M.S. Rhee

Publication date: 18 May 2015
, Volume 201
Author(s): Alicja K. Warda , Heidy M.W. den Besten , Na Sha , Tjakko Abee , Masja N. Nierop Groot

Publication date: 18 May 2015
, Volume 201
Author(s): Coralie Coudray-Meunier , Audrey Fraisse , Sandra Martin-Latil , Laurent Guillier , Sabine Delannoy , Patrick Fach , Sylvie Perelle

Non-O1/non-O139 Vibrio cholerae inhabits estuarine and coastal waters globally, but its clinical significance has not been sufficiently investigated, despite the fact that it has been associated with septicemia and gastroenteritis. The emergence of virulent non-O1/non-O139 V. cholerae is consistent with the recognition of new pathogenic variants worldwide.

Polyamines are present in all living cells. In bacteria, polyamines are involved in a variety of functions, including biofilm formation, thus indicating that polyamines may have potential in the control of unwanted biofilm. In the present study, the effects of the polyamines norspermidine and spermidine on biofilms of 10 potentially pathogenic wild-type strains of Escherichia coli serotype O103:H2, Salmonella enterica subsp. enterica serovar Typhimurium, and S.

This study investigated the effect of a 30-cm covering of finished compost (FC) on survival of Escherichia coli O157:H7 and Salmonella spp. in active static and windrow composting systems. Feedstocks inoculated with E.

The detection of Listeria monocytogenes from food is currently carried out using a double enrichment. For the ISO methodology, this double enrichment is performed using half-Fraser and Fraser broths, in which the overgrowth of L. innocua can occur in samples where both species are present. In this study, we analyzed the induction of phages and phage tails of Listeria spp.

Millions of people suffer from foodborne diseases throughout the world every year, and the importance of food safety has grown worldwide in recent years. The aim of this study was to investigate the survival of hepatitis A virus (HAV) and viral surrogates of human norovirus (HuNoV) (bacteriophage MS2 and murine norovirus [MNV]) in food over time.