The application belongs to the technical field of
cosmetics, and discloses a
portulaca oleracea seed oil, a preparation method and application thereof,
cosmetics, medicines and food. The
portulaca oleracea seed oil comprises, in percentage by
mass, 33-37% of
linoleic acid, 24-27% of
linolenic acid, 15-18% of
oleic acid, 14-16% of
palmitic acid, 3.5-4.5% of
stearic acid, 0.5-1% of isooleic acid and 0.3-0.4% of
behenic acid. The
portulaca oleracea seed oil prepared by the preparation method of the application can effectively promote the proliferation of immortalized keratinocytes, reduce the production of
inflammatory factors, has strong anti-inflammatory effect, can promote the expression of
filaggrin and
tight junction protein genes and has barrier repair effect. The preparation method of the portulaca oleracea seed oil comprises sequentially
drying, seed oil extraction, seed oil purification, decolorization,
impurity removal and
drying to obtain the portulaca oleracea seed oil, and has the advantages of simple operation, high yield, low cost, stable product quality, green and environment-friendly process and suitability for large-scale production.