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Olive oil – biochemical composition and nutritional properties

Emilia Szymańska

Emilia Szymańska

2026-03-24
3 min. read
Olive oil – biochemical composition and nutritional properties
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Olive oil is composed of approximately 98 percent triacylglycerides—glycerol esters bonded to fatty acids—by volume. The remaining 2 percent consists of minor lipid-derived compounds, including phospholipids, phenolic antioxidants, chlorophyll pigments, and carotenoids such as beta-carotene. These trace constituents are responsible for the oil’s distinctive sensory profile, contributing to its aroma, flavor complexity, and documented health-promoting attributes. In terms of fatty acid distribution, olive oil is notably rich in monounsaturated oleic acid (C18:1), which constitutes between 56 and 83 percent of its total fatty acid content. Conversely, the polyunsaturated alpha-linolenic acid (n-3) is present in relatively low concentrations. The oil further contains meaningful quantities of linoleic acid (n-6, 3.5–20%), palmitic acid (C16:0, 7.5–20%), and stearic acid (C18:0, 0.5–5.0%), positioning it as a nutritionally diverse lipid source within the human diet.

Nutritional properties of olive oil vitamins and minerals

About 98% of olive oil is composed of triacylglycerol. Another 2% is derived from lipids, mainly phospholipids and phenolics, dyes and carotenoids. It is their content that affects the taste and smell of the olive oil and also indicates the health benefits of this oil. Olive oil is also characterized by its high content of oleic acid (56 83%) and low content of linoleic acid (n-3). It also contains a significant amount of linolic acid, which is likely to reduce insulin resistance to n-6 (3.5% 20%), palmitic acid (7.5% ̊ 20%) and asthma (0.5% ̇ 5.0%).

Is it even calories? How many calories does olive oil have?

Olive oil, like any other fat, is high in calories... 100 grams of olive oil provides 882 calories.

Application of olive oil

Olive oil is most commonly used as an ingredient in snacks and sauces. It is used to prepare dressings for salads. It fits garlic, capers, peppers. It's an element of the Mediterranean diet that is responsible for introducing healthy fats into the diet. Olive oil has been used extensively in cosmetics. Because of its consistency and ability to rebuild the lipid layer of the skin, olive oil can be used as a body oil. It can be added to baths, even small children, to make the skin smooth, and any irritation has been relieved.
Emilia Szymańska

Emilia Szymańska

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