The invention relates to a method for preparing a wheat
protein source
opioid peptide by the enzymolysis of wheat
protein, belonging to the technical field of wheat
protein deep processing. The method comprises the following steps of: taking wheat protein as
raw material; then adding water to achieve a certain
mass percent and regulating to a certain temperature and pH; firstly, adopting
pepsin to carry out enzymolysis; then changing enzymolysis conditions; adopting trypsinase or trypsogen to carry out enzymolysis; regulating pH to be neutral after
hydrolysis is ended; inactivating
enzyme, cooling and centrifuging; taking supernate, and then decoloring, separating with a 3000Da ultra-
filtration membrane and
drying, and finally obtaining the wheat protein source
opioid peptide. Adopting a guinea-pig
ileum method to determine the
opioid activity shows that the prepared wheat protein source
opioid peptide has obvious opioid activity, whereas the wheat protein of the
raw material does not have opioid activity. The invention widens the application range of the wheat protein through preparing the wheat protein source
opioid peptide by enzymolysis, thereby providing the theoretical basis and efficient path for promoting the deep development and utilization of the wheat protein.