This invention provides a
sea cucumber ganglioside extract nanoliposome with neuroprotective activity and its preparation method. The preparation steps are as follows: thawed frozen ready-to-eat
sea cucumber, chopped, freeze-dried, pulverized, and sieved to obtain freeze-dried
powder. The
powder is then extracted using supercritical CO2 extraction and rotary
evaporation to remove the
solvent. This
powder is then dissolved in
anhydrous ethanol with
soybean lecithin and β-sitosterol as the
oil phase, mixed with PBS buffer, stirred, and hydrated to obtain a proemulsion. After
centrifugation, the precipitate is resuspended and sonicated to obtain the product. This invention uses supercritical CO2 extraction, and the extract contains 59.70 μg / g of gangliosides, with glycosphingolipids accounting for 96.372% of sphingolipids, resulting in enrichment of the target components. Simultaneously, these nanoliposomes significantly
delay Aβ1-42-induced
paralysis. The 30 μg / mL group showed a 2.75-fold increase in
motor ability and a 30% increase in
reproductive function compared to the control group, and a 47% reduction in ROS levels. The neuroprotective effect is superior to that of the unencapsulated extract, providing a new approach for
adjuvant intervention in neurodegenerative diseases such as Alzheimer's
disease, and has broad application prospects in the
functional food field.