Friday, May 18, 2018 by Michelle Simmons
Minimize the risk of food poisoning from contaminated food surfaces by using oregano oil. A study published in LWT- Food Science and Technology found that oregano oil helps kill bacteria.
In the study, a team of researchers from Federal University of Paraiba in João Pessoa, Brazil analyzed the efficiency of using the essential oil of the oregano plant (OVEO) or carvacrol, a phenolic compound found in OVEO, in removing biofilms formed on stainless steel surfaces.
The research team exposed the pathogenic bacterium Staphylococcus aureus – which has been linked to many instances of food poisoning around the world – to either 10 microliters per milliliter (μL/ml) of OVEO or 5 μL/ml carvacrol. The research team explained that it can survive because of its ability to form strong biofilms, which withstand most attempts to eliminate the bacterium from food preparation surfaces.
After 10 minutes of exposure to either OVEO or carvacrol, the number of cells on the surfaces decreased by more than 100 times for both strains of S. aureus examined. After 15 minutes, the same concentrations of OVEO and carvacrol virtually eliminated one strain of the bacteria to undetectable levels. However, only carvacrol effectively removed both strains of the bacteria, and was able to create holes in the cell membranes of S. aureus cells. These showed that carvacrol was more effective than the essential oil itself.
In addition, both the oregano-derived treatments were found to be more efficient in removing the bacteria than sodium hypochlorite (NaClO), which is a “conventional” way of eliminating pathogenic bacteria from stainless steel surfaces. The oregano-derived treatments also did not cause corrosion damage to the surfaces, contrary to NaClO.
“The results of this study indicated that carvacrol and OVEO are effective agents to remove young and mature S. aureus biofilms on stainless steel surfaces. OVEO and carvacrol were more effective than NaClO to remove S. aureus biofilms on a stainless steel surface, while causing no damage on these surfaces, as did NaClO,” senior author Marciane Magnani explained.
Read more news stories and studies on essential oils by going to EssentialOils.news.
Tagged Under: Tags: bacteria, biofilms, carvacrol, clean food, essential oils, food, food handling, food poisoning, food safety, food surfaces, foodborne diseases, harmful bacteria, natural method, natural solutions, oregano, oregano oil, Origanum vulgare, pathogenic bacteria, pathogens, raw meat, S. aureus, Staphylococcus aureus, uncooked meat