The invention discloses a pure natural cerebroprotein
hydrolysate raw material preparation method. The method comprises the steps as follows: a,
protein purification, to be specific, a cryopreserved fresh
pig brain is defrosted, cleaned, homogenized, and subjected to
centrifugal separation for obtaining precipitated brain
protein; b,
pepsin enzymolysis, to be specific,
pepsin is added in the precipitated brain
protein and stirred, then concentrated
hydrochloric acid is added and stirred, and then the
centrifugal separation carried out, so that a
pepsin enzymatic
hydrolysate is obtained; c,
acid hydrolysis, to be specific,
sulfuric acid is added into the pepsin enzymatic
hydrolysate for hydrolyzing, so that an
acid hydrolysis liquid is obtained; d,
trypsin enzymolysis, to be specific, the pH value is adjusted to 7-9, and pancreatin with the weight 0.1% to 0.4% of that of the
pig brain is added for hydrolyzing, and the
centrifugal separation is carried out, so that a pancreatin enzymatic hydrolysate is obtained; e,
chromatography, to be specific, the pH value is adjusted to 6.5-7.5, and resolving is carried out by using
ammonia water, so that a
chromatography liquid is obtained; f, concentration, to be specific, the vacuum concentration is carried out, the pH value is adjusted to 6.5-7.5, and then
frozen storage is carried out; g,
impurity removing, to be specific the condensed frozen liquid is defrosted, and then subjected to centrifugal separation as well as
ultrafiltration for obtaining natural cerebroprotein hydrolysate
raw material.