高等学校化学研究 ›› 2004, Vol. 20 ›› Issue (6): 707-710.
LIU Chun-ming1,2, ZHAO Xue-liang3, LIU Zhi-qiang1, XING Jun-peng1
LIU Chun-ming1,2, ZHAO Xue-liang3, LIU Zhi-qiang1, XING Jun-peng1
摘要: In the present paper is reported the method for the isolation and extraction of total flavonoids of Epimedium Koreanum Nakai by means of supercritical fluid extraction(SFE). By examining pressure, temperature, amounts of modifier and extraction time, the optimized condition of SFE is confirmed as 30 MPa and 60 ℃, with 70% ethanol as the modifier. The samples were statically extracted for 30 min, followed by dynamic extraction for 120 min at a flow rate of 6 mL/min. The quantitative analysis of total flavonoids was performed by UV-Vis spectrophotometry. Compared with the conventional method, the SFE method is more efficient, more rapid and more friendly environmentally.