The invention particularly relates to a
ginseng peptide with anti-aging activity and a preparation method and application thereof, and belongs to the technical field of bioactive peptides. The method comprises the following steps: by taking
ginseng fibrous roots,
ginseng leaves and other by-products as raw materials, carrying out weak acid ultrasonic pretreatment, loading natural anti-aging
active components, carrying out low-temperature high-pressure homogenization and
airflow crushing synergistic treatment, carrying out double-stage composite enzymolysis, clarifying with an alternating
electric field ceramic membrane, carrying out five-stage series
ultrafiltration classification, carrying out four-stage
filter element sterilization, freeze-
drying and the like in sequence. The high-purity ginseng
peptide is prepared. The
total nitrogen content of the prepared ginseng
peptide is larger than or equal to 14.8%, the proportion of a
target peptide fragment is larger than or equal to 97.2%, the yield is larger than or equal to 18.5%, and the ginseng peptide has good
antioxidant and anti-aging activity and can be used for development of
functional food and
skin care products. The method is low in cost, high in
resource utilization rate and green and efficient in process, and the product purity and activity are remarkably superior to those of a traditional method.