Category Archives: Research

Research – A Critical Look at Reducing the Risk of Salmonella from Poultry—Part 1

Food Safety Magazine

Salmonella Campylobacter

Poultry meat consumption has significantly increased over the past three decades in the U.S., and it is currently the most consumed meat protein compared to beef and pork. This increase has occurred gradually due to significant scientific research and advances in genetics, nutrition, and bird management and husbandry, resulting in reduced processing costs and, eventually, decreased meat costs for the consumer. This increase in consumption has come at a cost to the consumer, as well—the risk of salmonellosis related to higher consumption. The U.S. Centers for Disease Control and Prevention has reported that the incidence of salmonellosis has not declined, despite a reduction in Salmonella prevalence in poultry and poultry products. This may be related to several other foods being sources of Salmonella—for example, produce.

Research -Strategies to Reduce Clostridium botulinum Risk in Fresh-Cut Produce

Food Safety Magazine

kswfoodworld

The risks associated with Clostridium botulinum and low-acid canned foods, meats, seafood, and temperature-abused foods are generally well-established. However, there has been increasing consideration toward C. botulinum and its potential as a pathogen of concern for fresh-cut vegetables, fruits, and mushrooms.

For an industry segment beleaguered by recent outbreaks of Shiga toxin-producing Escherichia coliSalmonella enterica, and Listeria monocytogenes, consideration of a bacterial pathogen with vastly different growth characteristics—one that is less traditionally associated with fresh produce—may seem burdensome. However, recent incidences of C. botulinum in packaged mushrooms,1 increased characterization of the growth conditions required by nonproteolytic C. botulinum, widespread industry adoption of modified atmosphere packaging (MAP), and even increasing fuel costs may necessitate a second look at this pathogen’s association with fresh produce.

Research – Control Measurements of Escherichia coli Biofilm: A Review

MDPI

Escherichia coli (E. coli) is a common pathogen that causes diarrhea in humans and animals. In particular, E. coli can easily form biofilm on the surface of living or non-living carriers, which can lead to the cross-contamination of food. This review mainly summarizes the formation process of E. coli biofilm, the prevalence of biofilm in the food industry, and inhibition methods of E. coli biofilm, including chemical and physical methods, and inhibition by bioactive extracts from plants and animals. This review aims to provide a basis for the prevention and control of E. coli biofilm in the food industry. View Full-Text

Research – Most Grain Food in Northern Uganda is Dangerous-Mycotoxins

Uganda Online

Associate Professor Richard Echodu who led the research told URN on Friday that most of the food eaten in the region is not safe for consumption due to the high level of mycotoxins contamination. 98% of the people in Norther Uganda are already affected.

Research – Enhancement of Thermal Inactivation of Cronobacter sakazakii in Apple Juice at 58 ºC by Inclusion of Butyl Para-Hydroxybenzoate and Malic Acid.

Journal of Food Protection

After studies with powdered infant formula indicated that the enhancement of thermal inactivation of Cronobacter sakazakii by butyl para-hydroxybenzoate (BPB) was blocked by the presence of high protein levels, we hypothesized that BPB would retain its synergistic activity in foods with a limited protein content and lipid content. This hypothesis was explored by examining the ability of BPB to enhance the thermal inactivation of Cronobacter sakazakii 607 at 58 °C in commercial apple juice, including examining the effects of pH and the possible synergistic effects with malic acid. Apple juice was adjusted to designated pH values between 3.2 and 9.0, supplemented with selected levels of BPB (≤125 ppm), inoculated with early stationary phase C. sakazakii 607, and thermally treated (58 °C) for 15 min using submerged coil apparatus. The same methods were used to study the enhancement of thermal inactivation by malic acid. Samples were plated on Tryptic Soy Agar for recovery and enumeration. Survival curves were plotted, and D-values were calculated and compared using ANOVA. Our results indicated BPB significantly enhanced thermal inactivation in a concentration dependent manner, with D-values of a few seconds at the original pH (3.8). The enhancement of thermal inactivation was pH dependent over the range of pH 3.4 to 9.0. Malic acid enhanced thermal inactivation as the pH was decreased from 3.8 to 3.2. The study supports the hypothesis that BPB can enhance the thermal inactivation of C. sakazakii in low protein foods.

Research – E. coli O104:H4 is similar to the 2011 outbreak strain found in Europe

Food Safety News

A type of E. coli similar to what caused a large outbreak in 2011 has recently been detected in Europe, according to researchers.

Two cases of Shiga toxin-producing Enteroaggregative E. coli (EAEC) O104:H4 were reported in the Netherlands in 2019 and 2020 and in one food isolate from 2017. There was also a patient from Austria in 2021.

In 2011, a huge outbreak caused by STEC O104:H4 occurred in Europe, mainly Germany and France, that was associated with sprouts grown from fenugreek seeds from Egypt. The outbreak resulted in more than 4,000 infections and 54 deaths from 16 countries, including six cases in the United States.

After this outbreak, only a few sporadic infections with EAEC O104:H4 were reported, most related to travel to Turkey or North Africa, said the study published in Emerging Infectious Diseases.

Research – Food Poisoning and Plant-Based Meat

Food Poisoning News

With an ever expanding market of plant-based meats, many consumers are beginning to choose plant-based meat options over animal meat. The growing market is partially attributed to an increasing number of vegetarians and vegans, while others are eating more plant-based meat due to environmental or health concerns. For some, eating a diet of plant-based meat rather than animal meat may be considered healthier; however, there are potentially harmful misconceptions about plant-based meat, specifically surrounding food safety.

There are consumers who falsely assume that because plant-based meat comes from plants, it does not need to be cooked properly like raw animal meat. Although some plants can be eaten raw, the USDA warns that plant-based meat products must be fully cooked to 160 degrees Fahrenheit to avoid growth of foodborne bacteria and pathogens.

One microbiologist and lead scientist of Agricultural Research Service’s (ARS), Anna Porto-Fett, advises consumers to handle raw plant-based meats with the same caution applied to “for example, raw ground beef.”

Research – Pulsed light technology effectively kills harmful pathogens in new study

Science Daily

Novel food decontamination method inactivates pathogens like E. coli and Salmonella

A light-based, food sanitization technique successfully eliminated multiple harmful pathogens in a new study. The pulsed light technique shows promise as an effective alternative to the chemical, heat and water-based antimicrobial technologies commonly used in the food industry — and could be applicable more generally in sanitized environments such as hospitals, water treatment facilities and pharmaceutical plants, according to the researchers.

Research – 10 Deadly Food Poisoning Outbreaks in US History

Food Poisoning News

Over the years, the United States has seen several foodborne illness outbreaks, some of which have been more lethal than others. The Centers for Disease Control and Prevention (CDC) estimates that contaminated food causes approximately 128,000 hospitalizations and 3,000 deaths yearly. The number of cases is usually higher during an outbreak than in a normal year. Foodborne illness outbreaks typically occur when multiple people contract a similar illness after consuming a common food, and analysis of the food implicates it as the source of the disease.

In the early 1920s, the Public Health Service was responsible for reporting foodborne illness outbreaks in the US. In 1961, the CDC, then known as the Communicable Disease Center, took over the role, and in 2011, it began publishing annual summaries of food poisoning outbreaks online.

Check the link above for the top ten.

Research – Lag between Campylobacter cases in broilers and humans

Poultry World

A Swedish study of human cases of campylobacteriosis and the prevalence of Campylobacter spp. in broilers has found a 2-week time lag, suggesting transmission through handling and consumption of fresh chicken meat.

The study, published in the International Journal of Food Microbiology, looked at cases between 2009 and 2019, exploring the relationship between the proportion of Campylobacter-positive broiler batches and the number of reported domestic cases in Sweden in humans.