Feb 06, 2021
Silk Amino Acid
Silk powder (silk fibrin powder) is a kind of macromolecular silk fibrin in powder form, which is made from the silk fibrin degummed under high pressure, requires special craft processing and smash through physical methods. Its molecular weight of is about 250000. It is tasteless, odorless, slightly soluble in water and insoluble in alcohol ether.
Water-soluble mixed amino acids, also called Fibroin-90, whose average molecular weight is about 90, which is acquired after the hydrolysis of silk fibroin. White or creamy white powder, or faint yellow transparent liquid, the ninhydrin reaction is positive.
Silk peptide is a kind of water-soluble polypeptide substance by the degradation of silk fibroin protein, whose molecular weight is between 500 and 10000, which is white powder with good water-solubility, the ninhydrin reaction is positive.
Sericin powder is the colloid protein wrapping in the outer layer of silk. It is a kind of yellowish powder and is soluble in water, whose ninhydrin reaction is positive.
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Residue on Ignition(%)
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