What is silk sericin powder?

Cosmetic grade silk sericin powder is the colloid protein wrapping in the outer layer of silk. The silk protein sericin has strong affinity to keratin. It forms a highly substantive, protective anti-wrinkle film on the skin surface, imparting an immediate, long-lasting, smooth, silky feeling.

Silk is the long continuous fiber consists of two fibroins and the sericin covering the outside.

The general composition of silk fiber:

  • Fibroin 70-80%
  • Sericin 20-30%
  • Lipid 0.4-0.8%
  • Hydrocarbon 1.2-1.6%
  • Pigment approximately 0.2%
  • Ash content approximately 0.7%

Silk emitted by the silkworm consists mainly of two proteins, sericin, fibroin; fibroin being the silk’s structural center, and sericin being the gum coating the fibers and allowing them to stick to each other.

The chemical composition of sericin is C30H40N10O16. It is a kind of yellowish powder and is soluble in water, whose ninhydrin reaction is positive.

Silk sericin powder benefits

Sericin skin care

  1. It has the functions of natural moisturizing and skin nourishing
  2. Possessing the action of inhibiting melanin production,
  3. Promoting the regeneration of skin tissue, guard against chapping and chemical damage
  4. Inhibiting the skin cancer
  5. Silk protein also possesses the function of antioxidant

Hair-caring, hair-nourishing and hairdressing

Sericin’s hair-caring function depends on the absorbency, absorptivity, film-forming ability and moisturizing type it received by hair. Compared with other protolysates (collagen, bone collagen, glutin and so on), the biggest feature of fibroin is that it is easy to be absorbed by the hair.

Medical

  1. Lower blood pressure and cholesterol levels.
  2. Anticoagulant and anti-HIV activity effects.
  3. Anti-inflammatory effect.
  4. Cancer prevention effect.

Specification

CharactersWhite to Light Yellow Powder, Easy Deliquescence. Solubility in Water
Total Nitrogen (%)≥14
The Percentage of Polarized Side Amino Acids in the Total Quantity of Amino Acids (%)>70
 Loss on Drying (%)5.0
Residue on Ignition4.0
 PH Value5.0-7.0
Heavy Metal (Pb)/(mg/kg)≤5
 Arsenic (mg/kg)≤0.5
 Total Bacterial Count (CFU/g)≤3000
Coliform (MPN/100g)≤90
 Pathogenic Bacteria (Salmonella, Shigella, Staphylococcus Aureus)Negative

 Packing

  • 25Kg/Fiber Drum, double plastic bag inside, with carton outside.
  • Sample – aluminum foil bag vacuum packing.

Where to buy Cosmetic grade silk sericin powder?

Just send an email to [email protected], or submit your requirement in bottom form. We are of service at any time!