Abstract: In this study,solvent extraction,ultrasonic extraction and flash extractionwas used for the extraction of rose pigment,in which flash extraction showed the highest efficiency.Based on single factor experiments,the effects of extraction time,liquid to solid ratio and extraction voltage on the yield of rose pigment were investigated,and orthogonal experiments were applied to further optimize extraction conditions.The results showed that the optimal conditions of flash extraction were confirmed as follows:flash extraction for 55 seconds,solid to liquid ratio of 1:60 g/mL,and voltage of 120 V.The crude rose pigment was further separated by polyamide resin and XAD macroporous resin.The concentration of rose pigment in the purified extract was 4.463%.Through further separation,the concentration of anthocyaninswas 2.331% and the anthocyanidins was 2.131%.These results provided the basis for the extraction of anthocyanins and anthocyadins,efficiently and simply.

Key words: flash extraction, orthogonal test, rose anthoyanins, rose anthocyanidins