What Is Refined Olive Oil?
Refined olive oil is olive oil that has undergone additional processing to remove defects, excessive free acidity, unwanted odors, pigments and other compounds.
That makes it very different from extra virgin olive oil, which is obtained directly from olives using mechanical or physical means and is not refined.
Refined olive oil is processed after the oil is made, so the oil becomes more neutral and commercially usable. Refining can lower free acidity sharply, and it also removes much of the natural aroma, flavor and many phenolic compounds found in virgin olive oil.
Why Is Olive Oil Refined?
Some virgin olive oils do not meet the chemical or sensory requirements to be sold directly as virgin or extra virgin olive oil.
This can happen because of damaged or deteriorated fruit, fermentation, long delays before pressing, oxidation, poor storage or other defects.
The International Olive Council classifies the lowest category of virgin olive oil as lampante virgin olive oil. It is not fit for direct consumption in that form and is intended for refining or technical use.
Refining makes that oil more neutral and suitable for further commercial use. It is a legitimate part of the olive-oil industry. The important point for buyers is understanding which category is actually in the bottle.
How Is Refined Olive Oil Made?
Refining can include several stages designed to remove undesirable components from the oil.
Neutralization
Reduces free fatty acids and therefore lowers measured free acidity.
Bleaching
Helps remove pigments, oxidation products and other unwanted compounds.
Deodorization
Uses controlled processing to remove volatile compounds responsible for undesirable aromas and flavors.
The result is an oil that is generally much more neutral in aroma, flavor and color than a fresh virgin or extra virgin olive oil.
Does Refining Remove Polyphenols?
Refining can substantially reduce the naturally occurring phenolic compounds found in virgin olive oil.
A published study following olive oil through the refining process found marked losses of hydroxytyrosol- and tyrosol-related phenolics during refining. These compounds are part of what gives fresh extra virgin olive oil its bitterness, pepperiness and oxidative stability.
That is one reason refined oil usually tastes much more neutral than extra virgin olive oil.
Want to understand these compounds in practical terms? Read our Olive Oil Polyphenols Guide.
Does Refined Olive Oil Have Less Flavor?
Yes. One purpose of refining is to remove undesirable sensory characteristics. The process also removes much of the natural aroma and flavor associated with virgin olive oil.
A fresh extra virgin olive oil can express green olive, herbs, grass, artichoke, tomato leaf, almond, bitterness and peppery pungency. Refined olive oil is intentionally moved toward a much more neutral profile.
Is Refined Olive Oil the Same as “Olive Oil”?
Not necessarily.
Under International Olive Council classifications, refined olive oil and the retail category simply called olive oil are different.
The category called olive oil is made by blending refined olive oil with virgin olive oils that are fit for consumption. The virgin component adds back some flavor, aroma and color.
In the EU, refined olive oil itself is not sold directly to consumers at retail. What shoppers encounter instead is the category legally described as olive oil composed of refined olive oils and virgin olive oils.
For the broader category breakdown, see The 5 Types of Olive Oil.
Is Refined Olive Oil the Same as Olive-Pomace Oil?
No. They come from different starting materials.
Refined olive oil begins with virgin olive oil that is subsequently refined.
Olive-pomace oil begins with olive pomace, the solid residue left after olive oil has been pressed from the fruit. Remaining oil can be recovered from this material and further processed.
Both may involve refining, but they are not the same category.
Why Can Refined Olive Oil Have Very Low Acidity?
This is one of the most important points for buyers.
Extra virgin olive oil must have free acidity of no more than 0.8%. Refined olive oil can have free acidity of no more than 0.3% under IOC standards. Free acidity of 0.8% or below does not, by itself, make an oil extra virgin. The category also requires the other chemical and sensory criteria.
At first glance, the lower limit can make the refined oil appear preferable. The comparison does not work that way.
Low acidity means very different things in refined olive oil and extra virgin olive oil.
In an unrefined extra virgin olive oil, very low free acidity is consistent with healthy fruit, careful harvesting, rapid pressing and controlled handling.
In refined olive oil, the refining process itself removes free fatty acids and can drive acidity down.
A refined oil at 0.3% is not a higher grade than an extra virgin olive oil at 0.4%. First identify the category, then interpret the number.
See our Low Acidity Olive Oil Guide for a deeper explanation.
Refined Olive Oil vs. Extra Virgin Olive Oil
| Characteristic | Extra Virgin Olive Oil | Refined Olive Oil |
|---|---|---|
| Production | Mechanical or physical means only | Virgin olive oil that is then refined |
| Refining | Not permitted | Yes |
| Maximum free acidity | 0.8% | 0.3% |
| Natural olive aroma | Yes | Usually mild or neutral |
| Phenolic character | Can be substantial | Substantially reduced by refining |
| Harvest expression | Can be clearly expressed | Much more limited |
What Do You Want From Your Olive Oil?
A refined-based olive oil can be useful when you want a mild, neutral cooking oil.
If you want aroma, flavor and the minor compounds that remain in virgin olive oil, extra virgin olive oil is the category produced without refining. It is also suitable for everyday cooking. Refining substantially reduces phenolic compounds that contribute to bitterness, pepperiness and oxidative stability.
Because extra virgin olive oil is obtained from olives by mechanical or physical means, without refining, it can keep more of what comes from the fresh fruit, including:
- naturally occurring olive polyphenols,
- monounsaturated fats, including oleic acid,
- fresh olive aroma,
- natural bitterness and peppery pungency,
- and the character of that harvest.
The difference is not simply strong flavor versus mild flavor. Extra virgin olive oil keeps more of the fruit’s aroma and minor compounds.
What an Authorized Claim Requires
The EU authorizes one specific polyphenol claim, and only when a separate laboratory test is met: olive oil polyphenols contribute to the protection of blood lipids from oxidative stress. The oil must provide at least 5 mg of hydroxytyrosol and its derivatives per 20 g of olive oil, and the beneficial effect is obtained with a daily intake of 20 g.
A total-polyphenol number does not prove eligibility for that claim. Juicy Olive presents its 840, 620 and 440 mg/kg results as measured total polyphenols. This page does not make the EU polyphenol claim for our oils.
If you want neutral cooking performance, a refined-based olive oil can be suitable. If you want the aroma, flavor and phenolic character of virgin olive oil, together with production you can trace, extra virgin olive oil is the category to choose.
How Can You Tell Whether an Olive Oil Is Refined?
Read both the front and the back label.
The front label sells the product. The detailed legal description tells you what type of olive oil you are paying for.
Do not stop at marketing words such as “pure,” “light,” “classic,” “smooth” or simply “olive oil.” Depending on the market, look for the full category description on the front or back label.
- Extra Virgin Olive Oil
- Virgin Olive Oil
- Refined Olive Oil
- Olive oil composed of refined olive oils and virgin olive oils
- Wording that specifically says refined olive oil is blended with virgin olive oil
- Olive-Pomace Oil
A bottle may display Olive Oil prominently while the fuller wording explains that refined olive oil is part of the product. That product is in a different category from extra virgin olive oil.
For a complete category comparison, read The 5 Types of Olive Oil.
Does “Light Olive Oil” Mean Fewer Calories?
Usually not. “Light” commonly refers to lighter flavor or color, not a low-calorie oil.
Olive oils are fats. Refining does not turn olive oil into a low-calorie product. The legal category is more useful than marketing words such as “light,” “classic” or “pure.”
How Is Juicy Olive Different?
Juicy Olive is not refined olive oil.
Our oils are certified-organic, early-harvest extra virgin olive oils from our family estate in the Troy region of northwestern Türkiye.
The olives are cold pressed on the estate within two hours of harvest, with the olive paste kept below 22°C. Our three profiles are different harvest expressions, not different quality grades.
| Juicy Olive Profile | Total Polyphenols | Free Acidity | Character |
|---|---|---|---|
| Fruity & Full-Bodied | 840 mg/kg | ≤0.2% | Bold, herbaceous, structured, strongly peppery |
| Mild & Flavorous | 620 mg/kg | ≤0.3% | Fresh, herbaceous, balanced, rounded |
| Relish & Smooth | 440 mg/kg | ≤0.5% | Silky, delicate, rounded |
Juicy Olive’s low free-acidity results are measured on extra virgin olive oil produced without refining. That is why the category matters before comparing acidity numbers.
You can review our published results on the Certificates & Laboratory Results page or learn how to interpret the numbers in our Olive Oil Lab Report Guide.
What Should You Check Before Buying Olive Oil?
- What category is it? Extra virgin, virgin, refined-based olive oil or olive-pomace oil?
- What does the full label say? Look for “refined,” “pomace,” or wording that specifically identifies refined olive oil as part of a blend with virgin olive oil.
- Who produced it and where?
- Is the harvest identified?
- Are laboratory results available?
- Are polyphenol results actually measured?
- Does the product show traceability beyond marketing language?
Acidity, polyphenols and other laboratory measurements become much more useful once you know what type of olive oil you are comparing.
Frequently Asked Questions
Is refined olive oil extra virgin?
No. Extra virgin olive oil is obtained directly from olives using mechanical or physical means and must meet the applicable chemical and sensory requirements without refining.
Is refined olive oil healthy?
Refined olive oil still contains unsaturated fatty acids, including oleic acid. Refining substantially reduces many of the phenolic compounds found in virgin olive oil. Those compounds contribute to bitterness, pepperiness and oxidative stability. Extra virgin olive oil is the category produced without refining, so it keeps more of that character.
Can you cook with extra virgin olive oil?
Yes. Extra virgin olive oil is suitable for everyday cooking and for using raw. Prolonged high heat can reduce some delicate aromas and phenolic compounds.
Why does refined olive oil have such low acidity?
Because refining removes free fatty acids. A low acidity number in refined olive oil is not the same measurement story as naturally low acidity in an unrefined extra virgin olive oil.
Does refined olive oil contain polyphenols?
Refined olive oil may retain small amounts of some minor compounds, but refining substantially reduces many of the phenolic compounds naturally present in virgin olive oil. A retail olive oil made by blending refined and virgin oils may contain additional phenolic compounds from its virgin component.
Is “olive oil” on a label the same as extra virgin olive oil?
No. Under IOC classifications, the category called olive oil is a blend of refined olive oil and virgin olive oils fit for consumption. Look specifically for the words Extra Virgin Olive Oil if that is the category you want.
Does “blend” mean an olive oil is refined?
Not by itself. “Blend” can describe different things, including blends of olive varieties. To identify a refined-based olive oil, read the full legal description and look for wording that specifically states that refined olive oil is blended with virgin olive oil.
Is refined olive oil the same as olive-pomace oil?
No. Refined olive oil originates from virgin olive oil. Olive-pomace oil originates from the residual olive material left after the primary pressing.
The Buyer Rule
Refined olive oil is real olive oil, and it is not the same product as extra virgin olive oil.
Refining can lower acidity and remove defects. It also removes much of the natural aroma, flavor and phenolic character of the original virgin oil.
For buyers who want more of the olive fruit kept in the finished oil, extra virgin olive oil is the category built on mechanical or physical means, without refining.
Choose Extra Virgin. Then Choose Your Profile.
Three certified-organic early-harvest extra virgin olive oils from one family estate.
840. 620. 440.
Not three quality grades. Three ways to taste the harvest.
Related Juicy Olive Guides
Sources & Standards
- International Olive Council — Olive Oil Designations and Definitions
- European Commission — Olive Oil Categories and EU Retail Marketing
- European Union — Authorized Health Claims for Olive Oil Polyphenols
- Lucci et al., Foods (2020) — Effect of the Refining Process on Hydroxytyrosol, Tyrosol and Tocopherols