The invention relates to the technical field of biological
medicine, and discloses a preparation method of
ginseng protein peptide for immunomodulation.The preparation method comprises the following steps of
raw material pretreatment,
saponin removal and desugaring treatment,
protein extraction and denaturation, directional enzymolysis, inactivation and separation, refining and
drying; a compound
enzyme preparation containing
cellulase,
pectinase and beta-
glucosidase is adopted to carry out directional desugaring treatment on
ginseng powder subjected to
saponin removal, non-target
carbohydrate impurities combined with
protein can be removed,
sugar residues in subsequent products are reduced, and therefore pure desugaring protein
powder is obtained to serve as an initial
raw material, and the yield of the
ginseng powder is improved. A foundation is laid for subsequent preparation of the high-activity
immunomodulatory protein peptide; ultrasonic assistance is introduced, and a real-time
hydrolysis degree monitoring and regulation strategy is coupled, so that the enzymolysis reaction is more uniform; through on-line monitoring and dynamic intervention on the
hydrolysis degree, the enzymolysis process can be stabilized in a preset optimal
peptide fragment generation interval, and the strong effect and stability of the immunomodulatory activity of the final product are guaranteed.