Sericin Powder is made from pure silk elements including 18 kinds of amino acids L-alanine, L-serine, and so on. It is the colloid protein wrapping in the outer layer of silk. It is a kind of yellow powder and is soluble in water.
Sericin powder amino acids are the water-soluble mixing amino acid obtained after the hydrolysis of Silk fibroin. The average molecular weight is about 90 and the product is also called “Silk 90”. The product is a white powder with a pH value between 5 to 7 and a positive ninhydrin reaction.