Polyphenols are a Many Splendored Thing

Polyphenols are powerful antioxidants that are found in real extra virgin olive oil. Until recently, the main benefit of olive oil was believed to come from its heart-safe monounsaturated fat. However, recent studies have shown that even more health benefits come from the polyphenols and antioxidants in real extra virgin olive oil. Of the thirty or so polyphenols in olive oil, one in particular, hydroxytyrosol, is primarily responsible for the reduction of inflammation. Companies have sprung up to extract hydroxytyrosol from olive oil, to create concentrated medicinal forms of it for sale to the public.

The question naturally arises – Is it better to take a concentrated extract of a single polyphenol, or to get the whole spectrum found in real extra virgin olive oil, which is a natural, raw product? Well, nutrition expert, Prof. John Finley, believes firmly that it is better to get our antioxidants from whole foods rather than from extracts. In general, the different ingredients in whole foods act as catalysts for each other, synergistically giving benefits that outweigh that of taking a singular, concentrated extract. Not to mention that the long-term effects of taking large doses of single compounds is not well understood. In his view, it is better to consume our food the way nature has created it; it is a much more gentle and holistic approach to maintaining good health. Here’s the entire article with Prof. John Finley.

To Filter or Not to Filter, That is the Question.

We’re frequently asked if we filter our oils. This question often comes from reading some faulty information on the internet or thinking olive oil is somehow similar to apple juice in this regard.

We filter our oils with mechanical means – meaning there is no chemical reaction. The newly milled oils are just passed through very fine meshes and a special felted paper designed specifically for trapping the olive particles and juices. Based on the recommendations of Marco Mugelli, the pioneer of naturally preserving olive oil polyphenols, we do this in-line, immediately after the oil is extracted and before it is pumped into a tank. This way, almost no sediment remains and there’s no chance anaerobic decomposition of the sediment will produce off smells during storage. Once spoilage begins to happen, other chemical processes kick in that rapidly lead to oxidation, rancidity, and unpleasant smells and tastes.

Some people centrifuge their oil to remove particulate matter, but this method introduces a lot of oxygen which reacts with the antioxidants in the oil. We also used this method early on, but we found that our oils lost their freshness due to the excessive oxidation much more quickly.

Others rack their oils the old-fashioned way to remove the vegetable water and particulate matter. After a cloudy oil has been in a tank for days or weeks, the sediment will have settled to the bottom, and then the clear oil is pumped into another container. We used to use this method early on as well and found the same problem with the freshness not lasting as long as we wanted.

Some olive oils are sold as “unfiltered”, conjuring up the benefits of unfiltered apple juice – as though this was a positive aspect in olive oil; it is not. The difference is that fresh, unfiltered apple juice is consumed almost immediately, whereas extra virgin olive oil, even though it is also a fresh product, is supposed to last for about two years. Particles suspended in olive oil usually begin anaerobic spoilage within a month or two, which is also one reason we never put herbs or other things into our oils.

Two years ago we had the polyphenol levels analyzed twice – as soon as the oils were made and again after the summer, 8 months later. We found, to our surprise, that the levels hadn’t changed a bit! Our oils are very stable because we take every precaution to avoid oxidation and prevent spoilage. We’re confident that immediate mechanical filtering is one of the keys to the exceptionally high polyphenols, and beautiful award-winning aromas and flavors – as well as the long shelf life of our oils.