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sunflower seeds
Sunflower seeds sunflower seeds. Sunflower Helianthus belongs to compositae. Annual herb. Alias sunflower, China's ancient called passion, Zhang Ju, Ying Yang flower etc., in Europe called the sun flowers, some countries called sun grass, turn on the lotus, sunflower. Sunflower native North America, this is a wild species, after the cultivation of ornamental, quickly spread all over the world, in the early sixteenth Century introduced to europe. The
At least nearly four hundred years of history in our country. In the past twenty years, sunflower seed production has developed rapidly, and the world's sunflower seed production has become the important oil. At present, our country is also widely cultivated.
Sunflower seeds are composed of peel (shell) and seed, and the seed is composed of seed coat, two pieces of seed and embryo. The peel is divided into three layers, outer fruit membranous, with short hairs; pericarp leathery, hard and thick endocarp villous. Two cotyledon hypertrophy and seed, radicle and germ, hypocotyl, without endosperm. Caulicle, located in the radicle and germ seed tip. The seed coat consists of two layers of outer epidermis and inner epidermis, which is a white film.
Sunflower seeds can be divided into three types according to their characteristics and uses:
(1): edible grain, shell thickness, kernel rate low, accounted for about 50%, seed oil content, generally in 40% ~ 50%. The peel is black and white. Suitable for fried food or feed.
(2) oil type: small grain, seed is plump, thin hull, kernel rate high, accounted for about 65% ~ 75%, kernel oil content generally reach 45% ~ 60%, peel for black or grey stripes, suitable for oil.
(3) the middle type: this type of growth and economic traits between edible and oil type.
Sunflower seed kernel contains water 5.6%, protein 30.4%, fat 44.7%, sugar (digestible) 12.6%, cellulose 2.7%, ash 4.4%.
Applicable to food
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