You can do it by using heat, solvents or pressure.
When the flowers have finished blooming and before the plant dies the seeds turn black. Save the heads to dry out and the seeds will fall out
Sunflowers
The pressed seeds of the Sunflower.
Sunflower seeds are ground and the oil obtained from them, which is then refined and packaged.
Sunflower oil, and sunflower seeds
sunflower oil (cooking), seeds (eating)
sunflower oil (cooking), seeds (eating)
sunflower oil, bird seeds
Sunflower seeds. Sunflower seeds. Sunflower seeds. Sunflower seeds. Sunflower seeds. Sunflower seeds. Sunflower seeds. Sunflower seeds. Sunflower seeds.
Sunflower oil comes from the seeds. The oil's purpose is to provide nutrients and energy for the seedling.
sunflower
Sunflower
Sunflower seeds are rich in oil because they are rich in poly-unsaturated fatty acid and mono-unsaturated oleic acid. Sunflower seed oil is extracted from the seeds by pressing them with great pressure.