超声法萃取丹参酮红色素的研究

应用功率超声法在常温下萃取丹参酮红色素成分.以色素得率和色价为综合指标来考察萃取效率.通过单因素试验和正交试验,结果表明超声萃取色素的最佳工艺条件是:取粒径为40目的丹参粉粒,以10倍量浓度为85 %乙醇溶液超声萃取9 min,超声功率为120 W.同传统萃取方法比较发现,超声萃取法大大缩短了萃取时间,且能获得更高的萃取效率.本研究为功率超声萃取技术的应用以及丹参酮红色素的开发奠定了一定基础.

Study on Ultrasonic Assisted Extraction of Tanshinones Red Pigment from Salvia miltiorrhiza bunge

Ultrasonic-assisted extraction (UAE) at room temperature was evaluated for the extraction of tanshinones red pigment from Salvia miltiorrhiza bunge. The extraction efficiency was analyzed using extraction rate and chroma value as indices. Results of single factor tests and orthogonal tests showed that the optimal particle size of tanshinones powder, ethanol content, liquid-solid ratio, extraction time and ultrasonic power of technologic parameters were 40 eyes, 85 %, 10:1, 9min and 120 W, respectively. Compared with conventional extraction techniques, UAE was more effective with lower extraction time. These researches were helpful to the application of UAE and exploitation of the tanshinones red pigment.