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