Tag Archives: agricultural research service

Research – Radio Waves Killing Salmonella in Raw Eggs

Food Safet News EGGS

Raw chicken eggs are in many commonly consumed foods – eggnog, hollandaise sauce and mayonnaise, to name a few – and since about one of every 20,000 chicken eggs in the U.S. runs a high risk of containing Salmonella bacteria, the only way to be sure these bacteria are killed is to hard-boil the eggs or pasteurize them via hot-water immersion.

However, doing either of those things changes the taste, texture and color of the eggs, qualities that some consumers find objectionable. Now, prototype research studies by scientists at the Agricultural Research Service (ARS) and Princeton University have found that raw eggs artificially infected with Salmonella bacteria can be zapped almost completely free of it by using radio waves, and that these waves, combined with a subsequent hot-water bath, can more quickly pasteurize eggs without objectionable after-effects.

Research – Flash Drying Poultry Cages – Reduces Campylobacter Levels

Food Poisoning Bulletin Campylobacter

Campylobacter is a bacteria that is commonly found in the intestines of poultry and shed  in their feces. During slaughter, these bacteria sometimes make their way onto cuts of meat, posing a health threat to consumers.

Sometimes these bacteria are spread from infected birds to healthy ones during transport. For example, a healthy bird may be placed in a poultry cage whose previous occupant was infected, or the healthy bird’s poultry cage may be placed beneath an infected bird’s cage on a truck. Despite the risk to consumers, there hasn’t been much progress in reducing the presence of the pathogen in poultry, according to the Centers for Disease Control and Prevention (CDC).

A few years ago, researchers discovered that drying the cages for 24-48 hours after washing them, cut down and even eliminated Campylobacter levels in poultry cages. But these drying times were found to be overly long and impractical by the industry. So  microbiologists Mark Berrang and Richard Meinersmann at the US Department of Agriculture’s  Agricultural Research Service and their colleague Charles Hofacre at the University of Georgia in Athens researched a shorter drying time with a blast of hot air.

They found that flowing hot air for 15 minutes on cages that had been spray washed with water “lowered the numbers of Campylobacter to an undetectable level,” according to a report of their study published in the January 2013 edition of Agricultural Research, a USDA publication. No word  yet on how the poultry industry views the breakthrough.