Polyphenols are the powerful natural compounds that make high-quality extra virgin olive oil one of the healthiest foods on the planet. Here's everything you need to know.
Polyphenols are a class of naturally occurring organic compounds found in plants. They serve as the plant's defense system — protecting against UV radiation, pests, and disease. In olive oil, polyphenols are responsible for the peppery, slightly bitter taste that distinguishes truly high-quality extra virgin olive oil from refined or lower-grade oils.
Over 30 different polyphenols have been identified in extra virgin olive oil. The most important ones for human health include:
One of the most potent natural antioxidants known. The EU recognizes it with an official health claim for protecting blood lipids from oxidative stress.
The compound behind that peppery kick at the back of your throat. Has anti-inflammatory properties similar to ibuprofen. A hallmark of fresh, high-quality EVOO.
Abundant in early-harvest oils. Contributes to the bitter taste and has been shown to support cardiovascular health and immune function.
Polyphenols are powerful antioxidants that neutralize free radicals in the body — unstable molecules that damage cells and contribute to aging, inflammation, and chronic disease. Research has linked regular consumption of polyphenol-rich olive oil to:
Polyphenol content is measured in milligrams per kilogram (mg/kg) — essentially parts per million. A bottle of EVOO with 400 mg/kg polyphenols contains 400 milligrams of polyphenols per kilogram of oil. For reference, one tablespoon (15ml) of 400 mg/kg EVOO delivers approximately 6mg of polyphenols.
The gold standard for measuring polyphenols is High-Performance Liquid Chromatography (HPLC) — a laboratory technique that identifies and quantifies individual polyphenol compounds. This is the method used to verify Singaris polyphenol content.
Sensory testing (tasting) can provide clues — peppery, bitter oils tend to be higher in polyphenols — but only lab testing provides accurate, verifiable numbers.
Oleocanthal, one of the key polyphenols in EVOO, has been shown to work through the same biochemical pathway as ibuprofen. Regular consumption of high-polyphenol EVOO may help manage chronic inflammation — a root cause of many modern diseases.
The European Food Safety Authority (EFSA) has approved an official health claim: "Olive oil polyphenols contribute to the protection of blood lipids from oxidative stress." This claim applies to oils containing at least 5mg of hydroxytyrosol daily — easily achieved with 1-2 tablespoons of Singaris (400+ mg/kg).
Emerging research suggests that olive oil polyphenols may help protect against neurodegenerative diseases like Alzheimer's and Parkinson's. Hydroxytyrosol, in particular, has shown the ability to cross the blood-brain barrier and protect neurons from oxidative damage.
Polyphenols are among the most powerful dietary antioxidants. They neutralize free radicals, reduce oxidative stress, and may slow cellular aging. Populations that consume high-polyphenol EVOO regularly — such as those following a traditional Mediterranean diet — consistently show longer lifespans and lower rates of chronic disease.
Olives harvested early in the season (September-November) contain significantly more polyphenols than those harvested later. Early harvest oil is typically greener, more peppery, and more bitter — all signs of higher polyphenol content. Learn more about early harvest olive oil →
Reputable producers publish independent lab results showing polyphenol content, acidity levels, and purity. If a brand doesn't provide this information, consider it a red flag. Singaris publishes batch-by-batch lab results for complete transparency.
Look for specific numbers — not just vague claims like "rich in polyphenols." A trustworthy producer will tell you exactly how many mg/kg of polyphenols their oil contains, the harvest date, and the olive variety. Our standard: 400+ mg/kg, verified by independent lab testing.
Singaris delivers 400+ mg/kg of total polyphenols — well above the 250 mg/kg threshold for "high-polyphenol" designation. This exceptional level is achieved through a combination of factors:
Singaris delivers 400+ mg/kg polyphenols in every bottle. Taste the peppery, complex flavor that only truly high-quality extra virgin olive oil can offer.