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Note: This article was AI-translated from Arabic and is currently under manual review. The author is not responsible for any translation errors. Please refer to the original Arabic text for the most accurate and authoritative information.
International olive oil expert and judge, and member of the Scientific Society – Alexandria University.
Restaurant Owner: I have been using the same frying oil for years, but I notice that the oil changes color quickly and its quality declines after a limited number of frying cycles. Additionally, replacement costs have risen, and regulatory requirements have become stricter. Is there a type of oil that can give me a longer lifespan and better quality without resorting to hydrogenated oils?
Food Oil Expert: The answer depends on understanding the fatty acid composition of the oil rather than its commercial brand name. Not all oils are equal in their ability to withstand heat or resist oxidation and degradation during frying.
Restaurant Owner: And which oil are global restaurants and food manufacturing plants heading towards today?
Expert: Over the past two decades, the global industry has shifted toward what is known as High Oleic Oils. This shift coincided with regulatory restrictions imposed on trans fats and partially hydrogenated oils. But to understand the reason behind this shift, we must first know what these oils are, how they originated, and what makes them different from conventional oils.
Restaurant Owner: So, is it just a new marketing label, or does it actually offer real value to the food industry?
To answer this question, this guide reviews the scientific, technical, and regulatory aspects of high oleic oils according to international Codex standards, clarifying their advantages, limitations, and practical applications in the oils and fats sector.
In recent decades, the vegetable oil manufacturing and refining sector has undergone a fundamental shift in its technical direction, aiming to improve the fatty acid composition of oils to achieve a balance between processing performance and food safety.
At the forefront of this shift, High Oleic Oils emerged as one of the most critical technical solutions combining high oxidative stability with compliance with regulations that limited the use of partially hydrogenated oils and industrial trans fats. Today, these oils have become an essential component in many deep-frying and food-processing applications worldwide.
The roots of high oleic oils date back to 1976 when Russian researcher K. I. Soldatov, at the VNIIMK Oil Crops Research Institute in Krasnodar, announced the development of the first high oleic sunflower variety under the name Pervenets.
This variety was developed using induced chemical mutagenesis followed by genetic selection for plants with high oleic acid content. With the subsequent evolution of plant breeding programs, some varieties reached oleic proportions ranging between 80% and 90%.
This fact holds special significance because these varieties are non-GMO; rather, they are the result of traditional breeding programs, which aided their regulatory acceptance in Europe, the Middle East, and the Gulf region.
During the 1980s and 1990s, European research centers—particularly in Spain and France—succeeded in understanding the genetic background of this trait and transferring it into high-yield commercial hybrids. Over time, Europe became one of the largest producers of high oleic sunflower oil, while the primary genetic origin of this trait remains attributed to the Russian variety Pervenets.
The most prominent factor behind the rapid proliferation of high oleic oils was the global crackdown on trans fats:
Facing these changes, the food industry needed an alternative capable of enduring frying and processing without generating trans fats, making high oleic oils one of the most prominent solutions.
Oleic Acid is a monounsaturated fatty acid designated as C18:1. In conventional plants, an enzyme produced by the FAD2 gene converts part of the oleic acid into linoleic acid.
When the activity of this gene decreases or is partially deactivated, oleic acid accumulates inside the seeds, and levels of polyunsaturated fatty acids decrease. Regardless of the breeding technique, the core mechanism of all high oleic varieties relies on reducing this bioconversion, resulting in high oleic and lower linoleic and linolenic levels.
The primary advantage of high oleic oils is not their smoke point—as many believe—but rather their high oxidative stability. The higher the number of double bonds in an oil, the greater its susceptibility to oxidation and thermal degradation.
Therefore, oils containing high percentages of oleic acid are more resistant to rancidity and quality degradation during storage and frying. This translates into:
One of the most common misconceptions is linking high oleic content to a higher smoke point. In reality, smoke point is primarily determined by:
Therefore, the smoke point of refined conventional sunflower oil may be very close to that of high oleic sunflower oil. The real difference lies in the rate of degradation during repeated use, not the temperature at which smoke begins to appear.
The Iodine Value is one of the most important laboratory tests used to verify the identity of high oleic oils. According to Codex standards, typical values are as follows:
Despite their significant advantages, high oleic oils present some technical challenges:
In 2018, the US FDA allowed a qualified health claim for oils containing at least 70% oleic acid. Scientific evidence indicates that replacing saturated fats with oleic-rich fats may help lower LDL cholesterol levels and reduce the risk of coronary heart disease.
However, the main health value of these oils is not an absolute superiority over all other oils, but rather that they serve as a more stable alternative less prone to producing harmful oxidation compounds during frying compared to many polyunsaturated-rich traditional oils.
Codex Standard CXS 210 defines the following minimum limits:
These limits represent the core international reference for characterizing and commercially certifying these oils.
The answer varies by crop:
Therefore, regulatory documentation and destination country import requirements must be reviewed prior to contracting and supply.
High oleic oils are typically sold at a price premium over conventional oils due to:
In return, processing plants and restaurants benefit from:
Thus, evaluating economic viability should rely on total operational cost rather than just price per ton.
Let us return to the restaurant owner's question at the beginning of the article: "Is there an oil that gives me a longer frying lifespan and better quality without resorting to hydrogenated oils?"
The short answer is: Yes. In many commercial frying and food manufacturing applications, high oleic oils represent one of the best available options today.
However, this is not because they are "healthier" than all other oils as sometimes rumored, but because they provide a clear technical advantage in high oxidative stability and resistance to thermal degradation during repeated use. This translates to a longer operational oil life, lower formation of breakdown products and oxidation, and improved stability of final product quality.
On the other hand, they should not be viewed as an ideal oil for all cases; their higher price, segregation and traceability requirements in the supply chain, along with lower levels of certain essential fatty acids compared to traditional oils, are all factors that must be considered during evaluation.
For restaurants and factories, the right decision depends not only on the price per ton, but on total operating costs, frying cycles, product quality stability, and oil consumption rates over the production cycle.
Therefore, it can be stated that high oleic oils are not a passing marketing fad, but an advanced engineering and technical solution driven by modern industrial needs and global regulations restricting trans fats and partially hydrogenated oils.
Thus, the expert can confidently answer the restaurant owner: If your goal is to obtain an oil that is more stable, lasts longer in frying, and helps you comply with modern health and regulatory standards, high oleic oils deserve to be among the top options you evaluate—provided you select the right type for your application and assess it economically based on your actual operating conditions.