The invention provides a preparation method for jelly fish
neurotensin, which comprises the following steps of: carrying out metallic
ion removal treatment on jelly fish; sequentially carrying out steps of homogenating, enzymolysis,
enzyme deactivating, concentration,
ultrafiltration,
freeze drying and the like; and finally obtaining purified jelly fish
neurotensin powder. The method combines the modern
enzyme engineering technology, provides a novel efficient production path for the jelly fish
neurotensin, improves the utilization efficiency of jelly
fish resources and has the characteristics that the operation is simple, the extraction rate is high, and the product activity preservation is good. The production cost of the jelly fish neurotensin is reduced. The rich
protein resources of the jelly fish are sufficiently utilized, and various metallic ions in jelly fish bodies are basically and clearly removed through the metallic
ion removal treatment, so the subsequent enzymolysis and application are
safer. Results of jelly fish neurotensin antihypertensive activity experiments adopting
spontaneously hypertensive rat (SHR) models show that the group of the preparation method obviously differs from the blank control group. The jelly fish neurotensin prepared by the preparation method has the antihypertensive activity similar to
positive control captopril.