Abstract:Rose flower pigment was extracted using rose flower as raw materials. The factors on the extraction rate such as solvent, extraction temperature, extraction of pH, extraction dosage, frequency were studied. The results showed that the optimum conditions were the 40℃water bath, pH=4.0 in 95% ethanol solution to the 1∶10 ratio of material to liquid immersion of 1.0 h(3~4 times) to yield higher pigment Stability of the rose flower pigment about the corrosion resistance, heat-resistance, resistance to oxidation-reduction, and other aspects were analyzed. It was not stable to light, and reduction, but it was resistant to acid alkal, temperature, ioxidants. Finally, through various metal ions on the pigment color of experiments, the majority of metal ions(except Fe3+、Cu2+)had no influence on the pigment color. The pigment had great prospects for development and in the food, beverage, candy and liquor, and so on.
Keywords:ChineseRose; pigment; extraction; stability