Research Publications (Food Safety)

Author(s): Yanwen Xue, Fang Huang, Rongxue Tang, Qingsheng Fan, Bing Zhang, Zhenjiang Xu, Xiaoming Sun, Zheng Ruan

Author(s): Keuri Eleutério Rodrigues, Fábio Rodrigues de Oliveira, Benilson Ramos Cassunde Barbosa, Ricardo S. Oliveira Paraense, Cahy Manoel Bannwart, Bruno Gonçalves Pinheiro, Anderson de Santana Botelho, Nilton Akio Muto, Cristine Bastos do Amarante, Moises Hamoy, Barbarella de Matos Macchi, Cristiane do Socorro Ferraz Maia, Alejandro Ferraz do Prado, José Luiz Martins do Nascimento

Author(s): Luísa Freire, Marianna M. Furtado, Tatiane M. Guerreiro, Juliana S. da Graça, Beatriz S. da Silva, Diogo N. Oliveira, Rodrigo R. Catharino, Anderson S. Sant’Ana

Author(s): Yanju Xiao, Bingjie Liu, Zijuan Wang, Chenlu Han, Xianghong Meng, Fang Zhang

Author(s): Chuang Ma, Fu-Yong Liu, Bin Hu, Ming-Bao Wei, Ji-Hong Zhao, Ke Zhang, Hong-Zhong Zhang

Author(s): Sha Xu, Yu Zhang, Youran Li, Xiaole Xia, Jingwen Zhou, Guiyang Shi

The effects of visual cues on familiarity, expected heat intensity, liking of appearance, emotional and wellness responses, and purchase intent (PI) before and after disclosing information associated with red chili powders were determined using a 3‐point scale, a 15‐cm line scale, a 9‐point hedonic scale, a 15‐cm line scale, and a binomial scale, respectively. In this study, consumers only visually evaluated red chili powder samples without sniffing nor tasting.

A multidisciplinary approach was carried out in order to study the biodeterioration and the associated microbiome of a XVIII Century wax seal coloured with minium. A small wax seal fragment was observed by scanning electron microscopy combined with energy dispersive spectroscopy in non‐destructive mode. The same object was analysed by Raman and Fourier‐transform infrared spectroscopy.

Unfortunately, The first author’s name has been incorrectly published in the original publication of the article. The correct name of the author is “Youg Raj Thaker”.

ABSTRACT Campylobacter jejuni, a major cause of human gastroenteritis worldwide, is often associated with the consumption of contaminated poultry products. With increasing consumer preference to natural and minimally processed foods, interventions utilizing natural antimicrobials for controlling C. jejuni on poultry products are gaining popularity.

ABSTRACT The worsening problem of antibiotic resistance prompts the need for alternative strategies that do not directly target bacteria. Virulent Salmonella pullorum strains can invade macrophages and lead to a systemic infection. Saikosaponin A (SSa), a bioactive saponin isolated from Radix bupleuri, has been demonstrated to exhibit anti-inflammatory, hepatoprotective, and cholesterol regulatory activity.

ABSTRACT The nutritional cost of activating B cell-mediated immunity is thought to be low in chickens. However, this assumption is incompletely characterized. Immunoglobulin knockout (Ig-KO) chickens lacking B cells and immunoglobulin may potentially be a robust model to investigate the nutritional cost of immunity.

ABSTRACT Mechanically separated chicken (MSC) may be incorporated into other further processed foods, and has been identified as a transmission vehicle in human foodborne disease outbreaks involving the pathogen Salmonella enterica. Chickens possess pneumatic bones producing marrow, which may become infected with Salmonella and present a mechanism for Salmonella contamination of MSC.

Nitric oxide (NO) and its derivatives are important effectors of host innate immunity, disrupting cellular function of infecting pathogens. Transcriptome analysis of Vibrio vulnificus, an opportunistic human pathogen, identified a set of genes induced upon exposure to NO. Among them, VvhmpA (V. vulnificus hmpA), encoding a multidomain NO dioxygenase, was the most greatly induced upon exposure to NO and was thus further characterized.

Salmonella genomic island 1 (SGI1) is an integrative mobilizable element integrated into the chromosome of bacteria, which plays an important role in the dissemination of antimicrobial resistance genes. Lots of SGI1 variants are found mainly in Salmonella enterica and Proteus mirabilis. In this study, a total of 157 S. enterica and 132 P. mirabilis strains were collected from food-producing animals in Sichuan Province of China between December 2016 and November 2017.

The emerging threat of drug resistant bacteria has prompted the investigation into bacterial signaling pathways responsible for pathogenesis. One such mechanism by which bacteria regulate their physiology during infection of a host is through a process known as quorum sensing (QS). Bacteria use QS to regulate community-wide gene expression in response to changes in population density.

Atypical enteropathogenic E. coli (aEPEC) is a group of diarrhoeagenic Escherichia coli with high diversity of serogroups, which lack the bundle-forming pili (BFP) and genes encoding for shiga toxins. The aim of this study was to isolate, identify and determine virulence and antibiotic resistance profiles of aEPEC O177 strains from cattle feces. A total of 780 samples were collected from beef and dairy cattle and analyzed for the presence of E. coli O177.

by Gyula Gyebnár, Zoltán Klimaj, László Entz, Dániel Fabó, Gábor Rudas, Péter Barsi, Lajos R. Kozák

The spoVA2mob operon confers heat resistance to Bacillus spp., and the resistance correlates to the copy number of the operon. Bacillus endospores also exhibit a strong variation in resistance to pressure, but the underlying mechanisms of endospore resistance to pressure are not fully understood. We determined the effects of multiple spoVA2mob operons on high-pressure resistance in Bacillus endospores.

Macrococcus caseolyticus belongs to the normal bacterial flora of dairy cows and does not usually cause disease. However, methicillin-resistant M. caseolyticus strains were isolated from bovine mastitis milk. These bacteria had acquired a chromosomal island (McRImecD-1 or McRImecD-2) carrying the methicillin resistance gene mecD. To gain insight into the distribution of McRImecD types in M.

A collection of bacterial endophytes isolated from stem tissues of plants growing in soils highly contaminated with petroleum hydrocarbons were screened for plant growth-promoting capabilities. Twenty-seven endophytic isolates significantly improved the growth of Arabidopsis thaliana plants in comparison to that of uninoculated control plants.

Selection of extended-spectrum mutations in narrow-spectrum oxacillinases (e.g., OXA-2 and OXA-10) is an emerging mechanism for development of in vivo resistance to ceftolozane-tazobactam and ceftazidime-avibactam in Pseudomonas aeruginosa. Detection of these challenging enzymes therefore seems essential to prevent clinical failure, but the complex phenotypic plasticity exhibited by this species may often lead to their underestimation.

Author(s): Doaa M. Mokhtar

Author(s): Kamal Tyagi, Itay Maoz, Yakov Vinokur, Victor Rodov, Efraim Lewinsohn, Amnon Lichter