The color of silkworm cocoon is white, yellow, light green, flesh red and other colors, the surface is white.

Silkworm fluke usually refers to the cocoon of the mulberry silkworm. The sac-shaped protective layer of the pupal stage of the mulberry silkworm, containing the pupal body. The protective layer includes the cocoon coat, cocoon layer and pupal lining and other parts. Cocoon layer can be reeling, cocoon coat and reeling after the waste silk can be used as silk cotton and silk spinning raw materials.

Silkworm was long oval, oval girdle-shaped, spherical or spindle-shaped and other different shapes, or slightly constricted in the middle of the cocoon, cocoon white, yellow, light green, flesh red and other colors, the long cocoon of about 3 to 4 cm, 1.7 to 2.1 cm in diameter, the surface of the white, with irregular wrinkles, and there are attached to the silkworm silk, in the form of fluffy. Its inner wall of silk pattern is very regular.

Light and tough, not easy to tear. The unfeathered cocoon contains one yellowish-brown silkworm pupa as well as light-brown, wrinkled silkworm skin shed before becoming a pupa.

Extended information:

Cocoon chemical composition of the following: moisture 1.40%, ash 1.14%, 97.34% protein, ether-soluble leachate 0.26%, fiber 0.39%. Cocoons are mainly made of fibrous protein silk fiber protein (Fibroin), outsourced to another protein silk gelatin protein (Sericin) bonding, in addition to a small amount of oil, pigment, inorganic substances and so on.

The cocoon is sweet, warm, non-toxic, and belongs to the spleen meridian; it has the effect of stopping bleeding, quenching thirst, and detoxifying; it is used to treat blood in the stool, blood in urine, hematochezia, thirst, retching, carbuncle, chancre, etc. It is also used as a treatment of blood in the stool, blood in urine, hematochezia, thirst, retching, carbuncle, chancre.

Usually refers to the cocoon of the mulberry silkworm. The sac-shaped protective layer of the pupal stage of the mulberry silkworm, containing the pupal body. The protective layer includes the cocoon coat, cocoon layer and pupal lining and other parts. Cocoon layer can be reeling, cocoon clothing and reeling after the waste silk can be used as silk cotton and silk spinning raw materials.

Distribution: the national sericulture area are produced. One of the high-quality production area is Tongxiang City, Zhejiang Province, since ancient times, Jiangnan silk are the best.

Silkworm cocoons are mainly made of fibrous protein "silk fiber protein", outsourced to another protein "silk glue protein" bonding, in addition to a few.

Baidu Encyclopedia - Silkworm Fluorine