Preparation method and application of rose extract with anti-inflammatory and whitening effects

The invention discloses a rose extract preparation method, which comprises: 1, mixing roses and an extraction solvent, and carrying out microwave-assisted preheating; 2, adding the preheated roses and an extraction solvent into a reaction container of a flash extractor; 3, ultrasonic-assisted flash extraction is adopted, and a mixed solution is obtained; step 4, carrying out reflux extraction on the mixed solution at 70-95 DEG C for 1-4 hours, refrigerating, precipitating and filtering to obtain primary filtrate and filter residues; step 5, extracting the filter residue with the extraction solvent again to obtain a secondary filtrate, combining the secondary filtrate with the primary filtrate to obtain a combined filtrate, and filtering; step 6, decolorizing with macroporous resin, and performing rotary evaporation to remove the solvent to obtain a concentrate; and 7, mixing the concentrate with deionized water and 1, 3-propylene glycol, and sterilizing to obtain the rose extract. The prepared rose extract ha