Olive leaves found to help with listeria

By Michelle Perrett

- Last updated on GMT

No research points to olive leaves inhibiting the growth of Listeria monocytogenes bacteria
No research points to olive leaves inhibiting the growth of Listeria monocytogenes bacteria

Related tags: Ingredients & nutrition

Olive leaf extract can inhibit the growth of Listeria monocytogenes bacteria and could be a potential adjunct to help control foodborne pathogens, according to a new study from Spain-based herbal extracts supplier Euromed.

The company’s olive leaf extract has traditionally been used as a herbal dietary supplement as it contains oleuropein and other polyphenolic compounds that offer benefits in terms of blood pressure, heart health and immune systems.

It said that secondary plant substances such as olive leaf extract were gaining increasing attention as potential antibacterial and food preservative agents.

Latest research

In the current study, Dr Yanhong Liu found that olive leaf extract inhibited the growth of Listeria monocytogenes completely.

In a previously published study, Dr Yanhong Liu and others investigated the antimicrobial effect of olive leaf extract against major foodborne pathogens, including Listeria monocytogenes, Escherichia coli and Salmonella enteritidis.

The results demonstrated that, at a concentration of 62.5 mg/ml, olive leaf extract almost completely inhibited the growth of these three pathogens.

In addition, it inhibited biofilm formation in Listeria monocytogenes and Salmonella enteritidis, and reduced cell motility in Listeria monocytogenes.

Related topics: NPD, Food Ingredients, Health & Nutrition

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