What Is High-Oleic Oil? A Buyer’s Guide for Food Businesses

High-oleic oils have become the standard choice for heavy frying, snack production and foods that need a long shelf life. They look and taste like ordinary refined oils, but they behave very differently under heat and over time. This guide explains what high-oleic oil is, why it is more stable, how the main types compare and how to tell whether it is worth choosing for your business.

What “high-oleic” means

Every vegetable oil is a mix of fatty acids. Three of them matter most for cooking oils:

• Oleic acid (C18:1), a monounsaturated fat. It is the main fatty acid in olive oil and is relatively resistant to oxidation.
• Linoleic acid (C18:2), an omega-6 polyunsaturated fat, and the main fatty acid in standard sunflower, soybean and corn oil.
• Alpha-linolenic acid (C18:3), an omega-3 polyunsaturated fat, found in useful amounts in soybean and canola oil.

A high-oleic oil is one made from crop varieties that produce much more oleic acid and much less of the two polyunsaturated fats. Oils with 70% or more oleic acid are generally described as high-oleic. Some crops also have a “mid-oleic” version in between: mid-oleic sunflower oil, for example, contains about 55–75% oleic acid.

To see the difference, compare standard sunflower oil, which contains roughly 14–39% oleic acid and 48–74% linoleic acid under the international Codex standard, with high-oleic sunflower oil, which contains 75% or more oleic acid. Commercial high-oleic sunflower hybrids often exceed 80%.

Why high-oleic oil lasts longer

When oil is heated, or simply stored in contact with air, its fatty acids react with oxygen. The more double bonds a fatty acid has, the faster this happens. One widely cited estimate puts the relative oxidation rates of oleic, linoleic and linolenic acid at about 1 : 10 : 20. In other words, linoleic acid oxidizes around ten times faster than oleic acid, and linolenic acid around twenty times faster.

Oxidation is what turns frying oil dark, makes it foam and smoke, and gives food stale or “fishy” flavors. In packaged foods it shows up as rancidity before the best-before date. By swapping most of the fragile polyunsaturated fats for oleic acid, high-oleic oils:

• Last longer in the fryer, so oil is changed less often and topped up less.
• Keep fried and baked foods fresh for longer, which matters for snacks, crackers and anything sold in a bag or box.
• Keep longer in storage. Our high-oleic sunflower, canola and soybean oils carry a shelf life of up to 24 months unopened, against up to 18 months for most standard refined oils.
• Need no hydrogenation. For decades, food makers partially hydrogenated liquid oils to make them more stable, which created artificial trans fat. In the United States, partially hydrogenated oils can no longer be added to food without FDA approval, and high-oleic oils are one of the main ways the industry replaced them.

How high-oleic crops were developed

High-oleic oils come from plant breeding, not from processing. The first high-oleic sunflower traces back to the Soviet variety Pervenets, developed by K. I. Soldatov from a mutation induced in an existing sunflower population and published in 1976. Out of about 6,000 seed samples screened, one showed an unusually high oleic acid content, and most high-oleic sunflower hybrids grown today trace back to that line. Breeders later raised the oleic content well above 80%.

High-oleic canola, safflower and peanut varieties have also been bred conventionally. Some high-oleic soybean varieties, by contrast, were developed with genetic engineering. If your customers or your market require non-GMO ingredients, say so in your quote request: high-oleic sunflower oil is often the simplest non-GMO choice, and we confirm what can be supplied with documentation.

The main high-oleic oils compared

Oil	Oleic acid, standard oil	Oleic acid, high-oleic oil	Notes
High-oleic sunflower	About 14–39%	75% or more	Very low in omega-3, light and neutral. The most widely used high-oleic frying oil.
High-oleic canola	About 51–70%	Around 70% or more	Lowest in saturated fat, about 7%, with omega-3 cut to around 3%. A favorite of quick-service chains.
High-oleic soybean	About 17–30%	Typically over 75%	Omega-3 under 3%, against 4.5–11% in standard soybean oil. Suits frying and food manufacturing.
High-oleic safflower	Standard safflower is high in linoleic acid	70–84%	Very stable, with a high smoke point. Used for frying and in products that need a long shelf life.
Olive	Naturally 55–85%		Not a bred high-oleic oil, but naturally rich in oleic acid.

Ranges are typical values from the Codex standard and our product specifications. Each oil page lists its full fatty acid profile, and the actual results for your lot are reported on its Certificate of Analysis.

Where high-oleic oil pays off

• All-day fryers. Quick-service restaurants, takeaways and caterers that fry for many hours a day get the most from high-oleic oil, because fewer oil changes offset the higher price per liter. See our guide to choosing a commercial frying oil.
• Snacks and fried foods sold packaged. Chips, crisps, nuts and crackers absorb a lot of oil, so the oil’s stability largely sets the product’s shelf life.
• Baking sprays, release agents and coatings, where oil sits in a thin layer exposed to air.
• Retail bottles that may sit on shelves or in warehouses for months.
• Products with “lower saturated fat” goals. High-oleic sunflower and canola oils give stability similar to palm-based oils while staying liquid and low in saturated fat.

Standard oils remain the economical choice for light frying, sautéing, dressings and mayonnaise, and for products eaten soon after they are made.

Health claims and labeling

In November 2018, the US Food and Drug Administration announced it would not object to a qualified health claim for edible oils containing at least 70% oleic acid. The claim states that supportive but not conclusive scientific evidence suggests that daily consumption of about 1½ tablespoons (20 grams) of oils containing high levels of oleic acid, when they replace fats and oils higher in saturated fat and do not increase total daily calories, may reduce the risk of coronary heart disease. The oils named included high-oleic sunflower, safflower and canola oils, and olive oil.

The claim applies only under US rules and has conditions on how it is worded and used. Other countries set their own rules for health and nutrition claims, so check the requirements in each market before using any claim on your labels.

Is high-oleic oil worth the extra cost?

High-oleic oils usually cost more per liter than standard oils, because the crops are specialty varieties that must be grown, harvested, stored and crushed separately to keep their oleic content high. Whether they are worth it depends on how you use the oil:

• Compare cost per serving, not per liter. If a high-oleic oil lets you change the fryer less often, it can cost less overall. Track how many days or batches each oil lasts in your own fryers, using a polar compounds tester.
• Consider the product’s life. For foods eaten the same day, the extra stability matters less. For packaged foods with months of shelf life, it can decide whether the product reaches its best-before date in good condition.
• Consider a mid-oleic or blended oil. Mid-oleic sunflower oil and frying blends, such as our deep frying oil, sit between standard and high-oleic oils on both stability and cost.

Buying tips

• Specify a minimum oleic acid content, for example 75% or 80% for sunflower oil, rather than just “high-oleic”, and ask for the omega-3 limit if stability matters to you.
• Check the Certificate of Analysis. The fatty acid composition, measured by gas chromatography, confirms the oleic content of each lot. Our guide to reading a Certificate of Analysis explains what to look for.
• Ask for a specification sheet before you order, so you can compare it with your product or fryer requirements.
• Choose the pack size for your turnover. Even a stable oil should be used first-in, first-out once opened. Our packaging guide compares every size, from 1-liter bottles to 20,000-liter flexitanks.

To compare high-oleic oils for your business, add them to your quote list with the pack sizes you need, and tell us how you will use the oil.

Sources

• Oklahoma State University Extension: Properties of high oleic seed oils
• OCL journal: origin of the Pervenets high-oleic sunflower mutant
• Institute of Food Technologists: US FDA grants qualified health claim for high-oleic oils (2018)
• US FDA: Final determination regarding partially hydrogenated oils
• Codex Alimentarius: Standard for Named Vegetable Oils (CXS 210-1999)