Polyphenols In Extra Virgin Olive Oil have Anti-bacterial Properties
A recent study by researchers at the National Research Council’s Institute of Food Sciences and the University of Salerno has shown that polyphenols from three different olive oil varieties have an inhibitory effect against several bacterial strains.
The tests were performed using 2.5 and 4.9 micrograms of the three polyphenol extracts against different pathogens. The results showed that the minimum concentration necessary to inhibit the growth of the pathogenic tester strains was low for all the polyphenolic extracts. This confirmed their general capacity to inhibit the growth of pathogenic or unwanted microorganisms.
In particular, all three extracts were effective in inhibiting the growth of Escherichia coli, a bacterium that is one of the causes of urinary tract infections. The three extracts also were found to be capable of inhibiting the growth of Pseudomonas Aeruginosa, a well-known pathogen that is responsible for the formation of biofilms.
Biofilms are densely packed communities of microbial cells that grow on living or inert surfaces and surround themselves with secreted polymers. Because the protective shell can keep out potential treatments, biofilms are at their most dangerous when they invade human cells or form on sutures and catheters used in surgeries. In American hospitals alone, thousands of deaths are attributed to biofilm-related surgical site infections and urinary tract infections.
“They gave us remarkable results in terms of their activity against pathogenic species, namely those that are responsible for the formation of biofilms. This could be a basis of complementary studies to formulate ideal drugs of natural origin, composed of optimal mixtures of polyphenols, which are able to exercise with the minimum effort, in terms of quantity, and the maximum result, namely against the greatest number of pathogens, their antibacterial efficacy,”Filomena Nazzaro, senior scientist at the National Research Council’s Institute of Food Sciences, Italy
Morocco Gold Extra Virgin Olive Oil Is High In Polyphenols.
Extra Virgin Olive Oil is probably the most extensively researched foodstuff on the planet and the health benefits are evidence based. Thanks to the recent spotlight on the Mediterranean Diet, extensive research has been done on the composition of best olive oil. What has been discovered is an extensive list of phytonutrients; one of the most praised is its polyphenols.
The high polyphenol content of Morocco Gold extra virgin olive oil is dependent on three factors. First is the variety of the olive, secondly the climate and terroire of the growing region and thirdly the actual time in the growing season that the crop is harvested.
Morocco Gold is pressed from the Picholine Marocaine, the only type of olive to go into Morocco Gold. Oil from this variety is renowned for it’s high polyphenol count, oxidative stability and longevity.
Our olives are grown in a valley that is about 2,000 feet above sea level. This helps to create the additional climatic challenges that encourage polyphenol uptake within the olive tree. It is also an area with naturally occurring high phenols in the soil itself.
In soils, phenols are released over extended period of time from decomposing plant materials. This causes complex organic compounds to be slowly oxidized or to break down into simpler forms of sugars, amino sugars, aliphatic and phenolic organic acids. These are further transformed into microbial biomass or are reorganized, and further oxidized, into humic assemblages (fulvic and humic acids), which bind to clay minerals.
There has been a long debate about the ability of plants to uptake humic substances through their root systems and to metabolize them. There is now a consensus about how humus plays a hormonal role rather than simply a nutritional role in plant physiology. Olive trees grown in ‘challenging’ conditions encourage the uptake of naturally occurring phenols in the soil. This in turn aids the circulatory system within the olive tree, with the phenols eventually finding their way to the olive fruit itself.
Thirdly, our olives are picked when the fruit is young and green. As the olives age on the tree, the colour of the olive changes to red and then black, the size of the olive increases thus producing more oil, but the polyphenol level decreases. There is a great deal of expertise within the farming community where we source our oil to ensure that the harvest is collected at the optimum time to maximise the polyphenol level.
How Can Extra Virgin Olive Oil Help Protect Against Bacteria?
Polyphenols have been shown to reduce morbidity and/or slow down the progression of cardiovascular, neurodegenerative, and cancer diseases. The mechanism of action of polyphenols strongly relates to their antioxidant activity. Polyphenols are known to decrease the level of reactive oxygen species in the human body. In addition, health-promoting properties of plant polyphenols comprise anti-inflammatory, anti-allergic, anti-atherogenic, anti-thrombotic, and anti-mutagenic effects. There is a body of research demonstrating their ability to modulate the human immune system by affecting the proliferation and activity of white blood cells, as well as the production of cytokines or other factors that participate in immunological defence.
Morocco Gold Extra Virgin Olive Oil Is High In Polyphenols
Our latset harvest has produced a low acidity level of 0.2% together with the highest level of polyphenols yet seen in our extra virgin olive oil.
|3,4 DHPEA-EDA||85 mg/kg|
|Ligstroside aglycone (p, HPEA-EA)||20 mg/kg|
|Oleuropein aglycone (3,4 DHPEA-EA)||71 mg/kg|
|Oleocanthal p, HPEA-EDA||65 mg/kg|
|Polyphenols Total||644 mg/kg|
Tyrosol : A Key Polyphenol In Morocco Gold Extra Virgin Olive Oil
Tyrosol is a phenylethanoid, a derivative of phenethyl alcohol. It is a natural phenolic antioxidant present in a variety of natural sources. The principal source for human diet is in high quality extra virgin olive oil like Morocco Gold. As an antioxidant, tyrosol can protect cells against injury due to oxidation.
Along with hydroxytyrosol, tyrosol is one of the most abundant polyphenols in extra virgin olive oil, where they occur as such, or in the form of esters of elenolic acid. There is an increasing level of research into these polyphenols and their properties to determine which is the most significant contributor towards the range of health benefits associated with high quality extra virgin olive oil.
Tyrosol is a colourless solid at room temperature, melting at 91–92°C and slightly soluble in water. Hydroxytyrosol on the other hand appears as a clear colourless liquid at room temperature. It is now believed that this affects the rate of ‘uptake’ when ingested with hydoxytyrosol acting more quickly in the gut, however tyrosol accumululating intercellularly over time to provide longer term protection due to its higher concentration and good bioavailability.