Silk Amino Acids

After the silk fibroin is hydrolyzed, the water-soluble mixed amino acid obtained has an average molecular weight of about 90, which is also called silk fibroin-90. White to light yellow powder or light yellow transparent liquid, ninhydrin reaction is positive.
Item Silk amino acid powder Silk amino acid liquid
Properties Light yellow powder, soluble in water, sweet taste Light yellow transparent liquid, sweet taste
Identification Ninhydrin reaction is positive Ninhydrin reaction is positive
Total nitrogen (%) ≥15 ≥3
Loss on drying (%) ≤4
Residue on ignition (%) ≤3 ≤1
Solid content (%) 20%
PH value 4.5.0-6.5 4.5.0-6.5
Total content of glycine, L-alanine, and L-serine (%) ≥83 ≥83
Heavy metals (calculated in pb)/(mg/kg) ≤5 ≤1
Arsenic (mg/kg) ≤0.5 ≤0.1
Total number of bacteria (CFU/g) ≤100 ≤1000
Coliform group (MPN) (pcs/100g) ≤30 ≤30
Pathogenic bacteria (Salmonella, Shigella, Staphylococcus aureus) must not be detected Not detected
Application characteristics:
1. Using silkworm silk as raw material and refined by biochemical process to produce mixed amino acids (silk essence), the content of alanine, serine, and glycine accounted for more than 83%. Nutritional value.
2. The glycine and serine in serine are the raw materials for the synthesis of protein in the organism, and the precursor of the synthesis of glutathione, and glutathione has a certain preventive effect on cardiovascular disease, cancer and human aging; glycine It also detoxifies the carcinogen aromatics; alanine can help the metabolism of alcohol and plays a role in benefiting the liver and preventing drunkenness; tyrosine has a good effect on preventing Alzheimer's disease.
3. Silk essence easily penetrates into the dermis of the skin, is quickly absorbed by the skin, and participates in the activity of enzymes in the body, achieving the effects of regulating moisture, anti-aging and nourishing the skin.