Under the optimum conditions (isopropanol/(NH4)2SO4=1.5 mL/4.3 g, acidity of system pH=4.0, concentration of gibbertimes less than 0.064 g/L), a one step extraction percentage(E%) and the enrichment multiple reached to 93.47% and 11.36 respectively.

• 结果表明在醇盐比(异丙醇/硫酸铵)为1.；5mL/4