Free radicals of superoxide anion and hydroxyl,which are harmful to human health,can be removed by some natural pigment.The scavenging action of yellow pigment of rosa chinensis to the above two free radicals were studied in this paper.Test results showed that the free radical scavenging rate was increased with the concentration of yellow pigment,and decreased with the action time.
[目的]研究月季花黄色素的提取工艺。[方法]利用超声波作用提取月季花黄色素,考察影响黄色素提取率的因素。[结果]结果表明,超声波作用下提取月季花黄色素的最佳工艺条件为:80%乙醇、pH值2.0、料液比1∶20、时间30 m in、提取级数3级。该条件下提取率为30.4%,色价为7.31。[结论]该研究结果为月季花的高效利用提供依据。
