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Silk Amino acids (365619)
Details:
Water-soluble mixed amino acids,  acquired from hydrolysis of silk fibroin;
Average molecular weight about 90, thus  also called Fibroin-90;
White or creamy white powder;
Ninhydrin reaction is positive.
Items Specifications
Characters Easily dissolves in water and has sweet taste
 Identify Ninhydrin reaction is positive
Total Nitrogen (%) ≥15
Drying Loss (%) ≤4
Residue on Ignition (%) ≤3
Total Content of Glycine, L-Alanine, L-Serine (%) ≥83
Heavy Metal (as Pb) /(mg/kg) ≤5
 Arsenic (mg/kg) ≤0.5
 Total Bacterial Count (CFU/g) ≤100
Coliform (MPN) (entity/100g) ≤30
Pathogenic Bacteria (Salmonella, Shigella, Staphylococcus Aureus) Not Detectable

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