The name of fatty acids is determined based on the carbon number and number of double bonds. As shown in Table 5, oleic acid (C18:1) has a carbon number of 18 and has a double bond in one location. Table 5 shows the content ratio of each fatty acid in the main types of vegetable oil. When consuming vegetable oil, it is important to understand the function of these fatty acids in the human body.
Source: Japan Inspection Institute of Fats & Oils