Olive oil is a kind of oil squeezed from olive fruit, which mainly contains monounsaturated fatty acids and polyunsaturated fatty acids. Among them, monounsaturated fatty acid, oleic acid, has a high content; Polyunsaturated fatty acids, including linoleic acid, linolenic acid and arachidonic acid, also have a high content. Olive oil is a healthy edible oil. Besides being eaten directly, olive oil is also commonly used in cooking, baking and pickling.

Besides olive oil, some other edible oils also contain high unsaturated fatty acids, such as sunflower seed oil, soybean oil, corn oil and sesame oil. Among these edible oils, linolenic acid, linoleic acid and other unsaturated fatty acids are high in content and also have certain nutritional value.

Tips for purchasing olive oil

1, origin and brand: choose olive oil from reliable origin and well-known brands. Mediterranean regions such as Spain, Italy and Greece are the main producing areas of olive oil, and the quality of olive oil in these regions is usually high.

2. Cold-pressed or unfiltered: Cold-pressed or unfiltered olive oil usually retains more nutrients and natural fragrance, and they may present cloudy color and texture, but this is normal.

3. Acidity: The lower the acidity of olive oil, the better the quality. The acidity of high-quality olive oil should be below 0.8%.

4. Color and texture: High-quality olive oil is usually dark yellow or green, and its texture is clear and transparent. If olive oil is pale yellow or turbid, it may be a low-quality product.