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.

Table 5: Content ratio of fatty acids contained in main types of vegetable oil

Source: Created by the Association based on 2019 data from the Japan Inspection Institute of Fats & Oils.