Sunflower seeds are actually the fruit of sunflowers, which are available for food and oil? , sunflower seeds are rich in unsaturated fatty acids, a variety of vitamins and trace elements, and their delicious flavor makes them a very popular casual snack and source of edible oil.

Sunflower seeds are composed of a pericarp (shell) and a seed, which consists of a seed coat, two cotyledons and an embryo. The pericarp is divided into three layers, the exocarp is membranous, with short hairs on it; the mesocarp is leathery, hard and thick; and the endocarp is downy. Inside the seed coat are two fertile cotyledons, as well as the radicle, embryonic stem, and germ, without endosperm. The radicle, radicle and germ are located at the tip of the seed. The seed coat consists of two layers, the outer epidermis and the inner epidermis, which is a white film.

Expanded Information:

Types

1, Edible

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Large seeds, thick skin and shell, low kernel yield, about 50%, kernel oil content, generally in 40% to 50%. The rind is mostly black with white stripes. Suitable for frying or as fodder.

2, oil type

Seeds are small, kernel full of full, thin shell, kernel rate is high, about 65% to 75%, kernel oil content is generally 45% to 60%, the peel is mostly black or gray stripes, suitable for oil extraction.

3, intermediate type

This type of fertility traits and economic traits between edible and oil type.