Sunflower seeds are normally classified by the pattern on their husks.
Black oil sunflower seeds have black husks, which are usually pressed to extract their oil.
Confection sunflower seeds have striped husks (black and white), used for food.
The physical properties of sunflower seeds were studied by several researchers.
Dried salted sunflower seeds are used as snack products.
They are a nutritious snack with high nutrition.