Greenherb operates a certified processing facility specializing in Sericin Powder, a natural silk protein ingredient derived from Bombyx mori cocoons through controlled hot-water degumming and spray drying. Our production system delivers consistent protein content, defined molecular weight distribution, and batch-level documentation. This provides cosmetic manufacturers, supplement formulators, and functional food developers with a dependable supply of this uniquely positioned animal-derived protein ingredient.
Our Sericin Powder is derived exclusively from Bombyx mori silk cocoons. Sericin is the outer protein layer of the silk fiber. It is separated from the inner fibroin core during controlled hot-water degumming. This process recovers the sericin fraction in its natural protein form.
Sericin contains an exceptionally high serine content. Serine accounts for approximately 30–35% of its total amino acid composition. This distinguishes sericin from other animal and plant proteins. The serine-rich profile is directly relevant to skin hydration and moisture-retention formulation concepts.
Our production process allows management of sericin molecular weight through controlled degumming parameters. Different molecular weight fractions exhibit distinct solubility and film-forming characteristics. We offer specifications suited to both topical cosmetic and oral supplement applications.
Sericin is naturally water-soluble. The spray-dried powder reconstitutes readily in aqueous systems. This supports direct incorporation into serum formulations, hydrating lotions, and liquid supplement bases without additional solubilization steps.
Our extraction uses only water as the processing medium. No chemical solvents are involved at any stage. This supports clean-label ingredient declaration across cosmetic and supplement regulatory frameworks.
Every lot undergoes ICP-MS screening for lead, arsenic, cadmium, and mercury. Results are verified against international cosmetic and supplement regulatory thresholds before release.
Each batch undergoes full microbiological panel testing. Total aerobic count, yeast and mold, and pathogen screening are all included. Results consistently meet cosmetic-grade and food-grade safety standards.
Each shipment includes COA, MSDS, allergen declaration, and heavy metal test report. These support regulatory submissions across international cosmetic ingredient and supplement markets.
|
Items |
Indicators |
|
Total Nitrogen (%) |
≥14 |
|
Loss on Drying (%) |
5.0 |
|
Residue on lgnition |
4.0 |
|
PH Value |
5.0-7.0 |
|
Heavy Metal (Pb)(mg/kg) |
≤5 |
|
Arsenic (mg/kg) |
≤0.5 |
|
Total Bacterial Count (CFUg) |
≤3000 |
|
Coliform (MPN/100g) |
≤90 |
|
Pathogenic Bacteria (Salmonella, Shigella, Staphylococcus Aureus) |
Not Detectable |
Sericin is one of two primary proteins found in Bombyx mori silk. The other is fibroin. Sericin forms the outer coating of the silk filament. It binds individual fibroin strands together within the cocoon structure. During silk textile processing, sericin is removed through degumming. This traditionally discarded fraction is recovered and processed into a functional protein ingredient.
For centuries, sericin was considered a waste product of silk manufacturing. Modern protein processing technology has transformed this byproduct into a valuable cosmetic and nutritional ingredient. Hot-water degumming releases sericin from the cocoon in its native soluble form. Subsequent concentration and spray drying converts the protein solution into a stable, functional powder.
Sericin and silk fibroin are both silk-derived proteins. They differ significantly in structure and function. Fibroin is a fibrous structural protein with limited water solubility. Sericin is a globular protein with high water solubility and strong film-forming properties. These differences make sericin uniquely suited to topical moisturizing applications. Fibroin is more commonly used in structural biomaterial and drug delivery contexts.
Incoming Bombyx mori cocoons are assessed for species identity, protein content, and microbiological status. Heavy metal screening of incoming material is completed before processing authorization.
Cocoons undergo mechanical cleaning to remove pupal debris and foreign matter. This ensures only clean cocoon material enters the degumming stage.
Cleaned cocoons are submerged in hot water under controlled temperature and time parameters. This selectively dissolves the sericin coating while leaving the fibroin core largely intact. Degumming conditions are validated to achieve target sericin extraction yield and molecular weight profile.
The sericin-rich solution undergoes filtration to remove fibroin fragments, cocoon debris, and particulate matter. Multi-stage filtration produces a clarified protein solution ready for concentration.
Clarified sericin solution is concentrated under vacuum at controlled temperatures. This increases protein concentration while preserving the native protein structure. Excessive heat is avoided to prevent protein denaturation.
Concentrated solution is measured for protein content by Kjeldahl or BCA protein assay. Standardization blending adjustments are made to achieve target specification. Molecular weight distribution is also assessed at this stage.
Standardized protein solution is atomized and dried at controlled inlet and outlet temperatures. This produces a uniform, free-flowing white to off-white powder. Drying conditions are validated to preserve protein solubility characteristics.
Each lot is tested for protein content, molecular weight profile, moisture, heavy metals, and full microbiological panel verification. Batches are released only after all parameters are confirmed within specification.
Finished powder is sealed in double-layer PE inner bags with desiccants. Drums are moisture-barrier sealed and light-proof. This maintains protein integrity and powder flow characteristics during storage and transit.
Sericin Powder is incorporated into topical hydrating formulations. The serine-rich amino acid profile contributes to products designed to support skin moisture retention and a comfortable, well-hydrated skin appearance. Regular topical use contributes to a visible improvement in skin softness and suppleness.
The water-soluble protein forms a thin protective film on the skin surface upon drying. This film-forming property contributes to formulations designed to support skin barrier comfort and reduce transepidermal moisture loss. It suits hydrating serum, toner, and leave-on skincare formats.
Sericin contributes to ingestible beauty and topical formulations targeting skin radiance and tone uniformity. Products designed to support a bright, even complexion and a healthy skin glow incorporate sericin as a functional protein ingredient.
The film-forming protein properties of sericin extend to hair care applications. Sericin Powder contributes to hair conditioning formulations designed to support smooth, shiny hair appearance and improve hair surface feel over consistent use.
The tyrosine and serine amino acid composition contributes antioxidant activity to cosmetic formulations. This supports product positioning in anti-aging and oxidative stress comfort skin care categories.
Sericin Powder is incorporated into beauty-from-within supplement formulations. The serine and threonine-rich amino acid profile contributes to daily nutritional supplement products targeting skin, hair, and nail wellness support through internal nutritional positioning.
Primary application category for Sericin Powder. Hydrating serums, moisturizing creams, facial masks, and toning lotions all incorporate sericin for its moisture-retention and film-forming properties. The water-soluble protein integrates directly into aqueous cosmetic formulations without additional processing.
Beauty-from-within supplement capsules, beauty drink powders, and collagen companion formulations incorporate Sericin Powder. The serine-rich amino acid profile and silk protein origin support premium natural beauty supplement positioning.
Shampoos, conditioners, hair masks, and leave-in treatments use Sericin Powder as a conditioning protein ingredient. Film-forming properties contribute to smooth, manageable hair texture and visible shine in rinse-off and leave-on hair care formats.
Water-soluble sericin protein contributes to beauty drink formulations and functional beverage systems where silk-derived protein content and skin wellness positioning support premium product differentiation.
The biocompatible, water-soluble protein is incorporated into sensitive skin care and wound comfort formulations. Sericin's natural origin and gentle protein composition support application in products designed for delicate or reactive skin types.
Greenherb supplies Sericin Powder with verified protein content and molecular weight profiles, backed by comprehensive third-party testing. We offer flexible order quantities from laboratory samples to full container loads. Customized molecular weight specifications, protein concentration tiers, and particle size options are available on request. For immediate assistance, contact our sourcing team directly.
Greenherb – Your Strategic Partner for Botanical Ingredients and Functional Foods.
