As shown in Table 8, vegetable oil in Japan is supplied via (1) oil expressed from the raw materials of agricultural products (oilseeds, etc.) and (2) imported oil. In 2025, only eight types of main raw materials are expressed in Japan: soybeans, rapeseeds, corn (germ), rice bran, sesame seeds, cottonseeds, peanuts, and linseeds. Although other types of seeds such as sunflower seeds and safflower seeds were also expressed previously, Japan currently imports crude oil and then refines that crude oil in Japan. This is more efficient.
Table 9 shows the major countries that supply the main types of oilseeds and oil to Japan. As you can see, the only raw material supplied in Japan is rice bran. Also, corn is not imported by oil-manufacturing corporations; instead, it is imported by corporations which manufacture starch. After the removal of starch, oil-manufacturing corporations collect the corn germ for expression.

Table 9: Main raw materials of vegetable oil supplied in Japan

Notes:(1) Although the table shows raw materials (oil seeds), crude oil is also imported from overseas in some cases.
(2) Countries listed in green are the main countries from which Japan imports. The bold text in this section corresponds to green text