Comparison of various preparation methods of silk peptide

The preparation methods of silk peptide mainly include: salt solution, acid solution, alkali solution, enzyme solution and so on.

Using salt solution to degrade silk protein with a molecular weight of tens of thousands can affect its attraction and nutritional value because it is still a macromolecular protein. Acidolysis can fully hydrolyze silk protein, but tryptophan is completely destroyed and serine, tyrosine and threonine are partially destroyed. Using alkali hydrolysis produces racemization and reduces nutritional value. Enzymatic hydrolysis method has mild reaction conditions and little damage to amino acids, therefore, it is the most effective method to degrade silk protein.

We need to take different methods to prepare silk peptide according to different actual needs, and we can also combine the above preparation methods for comprehensive treatment, so as to prepare silk peptide that meets the needs.