Wholesale Cosmetic Grade Skin Care Silk Amino Acid Silk Fibroin Powder Silk Fibroin CAS 96690-41-4

• Customization: Available
• Certification: ISO, FDA, HACCP
• Assay Method: HPLC-MS, GPC, HPLC, UV
• Model NO.: silk fibroin powder
• Application Form: Lotion, Paste, Tablet, Capsule
• Application: Food, Health Care Products, Medicine
• State: Powder
• Extract Source: Silk
• Product Name: Silk Amino Acid
• Appearance: White Powder
• COA: Available
• Shelf Life: Two Years
• MOQ: 1kg
• Sample: Available
• Extraction Type: Solvent Extraction
• Transport Package: 25kg/Fibre Drum
• Specification: 10: 1 20: 1
• Trademark: TZSW
• Origin: Shananxi, China
• HS Code: 2938909090
• Production Capacity: 5000kg/Year

Product Description

 

Product Description

Wholesale Cosmetic Grade Skin Care Silk amino acid Silk Fibroin Powder Silk Fibroin CAS 96690-41-4

Water soluble mixed amino acids,Also called Fibrin-90,whose average molecular weight is about 90 Da,Which is acquired after the hydrolysis of skin fibroin,White or yellow powder,Or faint yellow transparent liquid,the ninhydrin reaction is positive.
   
Silk fibroin is a natural high-molecular fibrin extracted from silk, which accounts for about 70% to 80% of silk. It contains 18 kinds of amino acids, of which glycine (gly), alanine (ala) and serine (ser) are about It accounts for more than 80% of the total composition.

Product Parameters

Properties	Parameter value/description
Source	Bombyx mori silk
CAS number	96690-41-4
Molecular weight	High molecular weight (200-400 kDa)/low molecular weight (5-50 kDa)
Amino acid composition	Glycine (~45%), alanine (~30%), serine (~12%)
Appearance	White to light yellow powder or transparent powder
Purity	≥90% (cosmetic grade), ≥98% (pharmaceutical grade)
Solubility	Soluble in water (needs specific solvent treatment, such as LiBr solution)
Biodegradability	Can be degraded by proteases, no toxic residues
Recommended dosage	Skin care products: 0.1%-5%; medicine: customized on demand
Storage conditions	Protect from light, dry, and store sealed at 4ºC (-20ºC is recommended for long-term storage)

Function

1. Deep moisturizing: forming a breathable moisturizing film, long-term water lock (performance is better than hyaluronic acid).
2. Barrier repair: promoting the proliferation of stratum corneum cells, repairing sensitive skin and postoperative damage.
3. Anti-aging and firming: stimulating the synthesis of collagen and elastic fibers, reducing wrinkles.
4. Drug delivery: nanofiber or microsphere structure accurately delivers active ingredients (such as vitamin C, growth factors).
5. Biological activity: antibacterial, antioxidant, inhibiting inflammatory factors (such as IL-6, TNF-α).

 

Application

1. Skin care products
• Essence/mask: 1%-3% concentration improves moisturizing power and repairs photodamage (compounded antioxidants).

• Eye cream: Improve fine lines and dark circles around the eyes (coordinated with caffeine and peptides).

• Microneedle/lyophilized powder: Nanofiber carrier promotes transdermal absorption of active ingredients.

2. Biomedicine
• Wound dressing: Accelerate the healing of burns and ulcers (in the form of hydrogel or film).

• Tissue engineering scaffold: Used for cartilage and bone regeneration (3D printing porous structure).

3. Functional materials
• Medical sutures: Degradable, high toughness, reduce postoperative scars.

• Flexible sensors: Biocompatible conductive materials for wearable devices.