scholarly journals Food Contamination

2020 ◽  
Author(s):  
Anna Abdolshahi ◽  
Behdad Shokrollahi Yancheshmeh
Keyword(s):  
Food Contamination

scholarly journals Influx of Enterococci and Associated Antibiotic Resistance and Virulence Genes from Ready-To-Eat Food to the Human Digestive Tract

2007 ◽  
Vol 73 (21) ◽  
pp. 6740-6747 ◽  
Author(s):  
Lilia Macovei ◽  
Ludek Zurek
Keyword(s):  
Antibiotic Resistance ◽  
Digestive Tract ◽  
Fast Food ◽  
Virulence Genes ◽  
Food Contamination ◽  
Gene Copy ◽  
Marker Genes ◽  
Enterococcus Casseliflavus ◽  
Fast Food Restaurants ◽  
Human Digestive Tract

ABSTRACT The influx of enterococcal antibiotic resistance (AR) and virulence genes from ready-to-eat food (RTEF) to the human digestive tract was assessed. Three RTEFs (chicken salad, chicken burger, and carrot cake) were sampled from five fast-food restaurants five times in summer (SU) and winter (WI). The prevalence of enterococci was significantly higher in SU (92.0% of salad samples and 64.0% of burger samples) than in WI (64.0% of salad samples and 24.0% of burger samples). The overall concentrations of enterococci during the two seasons were similar (∼103 CFU/g); the most prevalent were Enterococcus casseliflavus (41.5% of isolates) and Enterococcus hirae (41.5%) in WI and Enterococcus faecium (36.8%), E. casseliflavus (27.6%), and Enterococcus faecalis (22.4%) in SU. Resistance in WI was detected primarily to tetracycline (50.8%), ciprofloxacin (13.8%), and erythromycin (4.6%). SU isolates were resistant mainly to tetracycline (22.8%), erythromycin (22.1%), and kanamycin (13.0%). The most common tet gene was tet(M) (35.4% of WI isolates and 11.9% of SU isolates). The prevalence of virulence genes (gelE, asa1, cylA, and esp) and marker genes for clinical isolates (EF_0573, EF_0592, EF_0605, EF_1420, EF_2144, and pathogenicity island EF_0050) was low (≤12.3%). Genotyping of E. faecalis and E. faecium using pulsed-field gel electrophoresis revealed that the food contamination likely originated from various sources and that it was not clonal. Our conservative estimate (single AR gene copy per cell) for the influx of tet genes alone to the human digestive tract is 3.8 � 105 per meal (chicken salad). This AR gene influx is frequent because RTEFs are commonly consumed and that may play a role in the acquisition of AR determinants in the human digestive tract.

Restaurant Industry Preparedness Against Intentional Food Contamination

2010 ◽  
Vol 16 (4) ◽  
pp. E18-E30
Author(s):  
Sudha Xirasagar ◽  
C. P. Kanwat ◽  
Lillian U. Smith ◽  
Yi-Jhen Li ◽  
Lekhena Sros ◽  
...  
Keyword(s):  
Food Contamination ◽  
Restaurant Industry

Food contamination by PCBs and waste disposal crisis: Evidence from goat milk in Campania (Italy)

Chemosphere ◽  
2017 ◽  
Vol 186 ◽  
pp. 396-404 ◽  
Author(s):  
M.C. Ferrante ◽  
G. Fusco ◽  
A. Monnolo ◽  
F. Saggiomo ◽  
J. Guccione ◽  
...  
Keyword(s):  
Waste Disposal ◽  
Food Contamination ◽  
Goat Milk

Food Handlers Manual. Instructor

2017 ◽  
Keyword(s):  
Public Health ◽  
Latin American ◽  
Food Contamination ◽  
Economic Damage ◽  
Food Handlers ◽  
Food Handling ◽  
Food Borne ◽  
Hygienic Measures ◽  
Food Workers ◽  
Latin American And Caribbean

[Introduction]. Food-borne diseases (FBDs) are one of the most frequent public health problems in daily life. The hazards that cause FBD may occur in the different stages of the food chain (from primary production to the table). Independently from its origin, once the food reaches the consumer it may have an impact on public health and cause severe economic damage to the establishments devoted to its preparation and sale. These two events may cause loss of confidence and the closing down of a business. Fortunately, the measures for preventing food contamination are very simple and may be applied by anyone who handles food, by following easy rules for hygienic food handling. This Manual’s purpose is to provide to people who handle food, and particularly to food-handlers’ instructors, the information they need to facilitate the teaching of proper procedures to food workers. In addition, it seeks to provide basic information about food safety that Latin American and Caribbean countries may adapt to their own needs. The Manual is organized into three Modules and Appendixes focusing on the following topics: (1) food hazards; (2) FBDs; and (3) hygienic measures to prevent food contamination. The evaluation at the end, forms part of the Manual. Its purpose is to assess the knowledge learned during the course regarding the importance of hygienic food handling for public health.

Food Spoilage and Food Contamination

2019 ◽  
pp. 9-28
Author(s):  
Z. R. Azaz Ahmad Azad ◽  
Mohd. Fahim Ahmad ◽  
Waseem Ahmad Siddiqui
Keyword(s):  
Food Contamination ◽  
Food Spoilage

Multi-pesticide residue analysis by high resolution mass spectrometry in complementary matrices: wheat flour, lettuce and apple samples

2018 ◽  
Vol 10 (32) ◽  
pp. 3958-3967 ◽  
Author(s):  
Marilda Chiarello ◽  
Sidnei Moura
Keyword(s):  
Mass Spectrometry ◽  
High Resolution ◽  
Human Health ◽  
Pesticide Residue ◽  
Pesticide Residues ◽  
High Resolution Mass Spectrometry ◽  
Residue Analysis ◽  
Food Contamination ◽  
Pesticide Residue Analysis ◽  
Resolution Mass

Nowadays, food contamination with pesticide residues is prevalent, which can cause problems to human health.

scholarly journals Use of the polymerase chain reaction for detection of Fusarium graminearum in bulgur wheat

2012 ◽  
Vol 32 (1) ◽  
pp. 201-208 ◽  
Author(s):  
Carla Bertechini Faria ◽  
Giovana Caputo Almeida-Ferreira ◽  
Karina Bertechine Gagliardi ◽  
Tatiane Cristina Albuquerque Alves ◽  
Dauri José Tessmann ◽  
...  
Keyword(s):  
Polymerase Chain Reaction ◽  
Fusarium Graminearum ◽  
Genomic Dna ◽  
Solid Medium ◽  
Food Contamination ◽  
Chain Reaction ◽  
Specific Pcr ◽  
Culture Characteristics ◽  
Mycotoxigenic Fungi ◽  
Polymerase Chain

The detection of mycotoxigenic fungi in foodstuff is important because their presence may indicate the possible associated mycotoxin contamination. Fusarium graminearum is a wheat pathogen and a producer of micotoxins. The polymerase chain reaction (PCR) has been employed for the specific identification of F. graminearum. However, this methodology has not been commonly used for detection of F. graminearum in food. Thus, the objective of the present study was to develop a molecular methodology to detect F. graminearum in commercial samples of bulgur wheat. Two methods were tested. In the first method, a sample of this cereal was contaminated with F. graminearum mycelia. The genomic DNA was extracted from this mixture and used in a F. graminearum specific PCR reaction. The F. graminearum species was detected only in samples that were heavily contaminated. In the second method, samples of bulgur wheat were inoculated on a solid medium, and isolates having F. graminearum culture characteristics were obtained. The DNA extracted from these isolates was tested in F. graminearum specific PCR reactions. An isolate obtained had its trichothecene genotype identified by PCR. The established methodology could be used in surveys of food contamination with F. graminearum.

Sign in / Sign up

Export Citation Format

Share Document