Abstract Multiphase extraction (MPE) was applied as a developed, convenient and efficient method in separation of ephedrine from Pinellia ternata. Firstly, in order to increase the adsorption efficiency, bionic liquid-modified polymer was created. Comparing the effects of all sorbents under variables conditions, the highest amount of 5.8 mg/g can be adsorbed on dual imidazole ionic liquid modified polymer (Im-Im-Poly) in methanol/water (70:30, v/v) solution at 25°C within 30.0 min. Then the Im-Im-Poly was applied in MPE, after 7 times repetition of extraction, around 1.0 mg/g of ephedrine from Pinellia ternata was detected. After washing by water, ethanol and methanol, and elution by methanol/acetic acid (99.0:1.0, v/v), ephedrine was successfully separated.

中文翻译：

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仿生液体改性聚合物多相提取半夏麻黄碱

摘要 多相萃取(MPE) 是一种成熟、方便、高效的分离半夏麻黄碱的方法。首先，为了提高吸附效率，仿生液体改性聚合物被创造出来。比较所有吸附剂在不同条件下的影响，在甲醇/水 (70:30, v/v) 溶液中，双咪唑离子液体改性聚合物 (Im-Im-Poly) 的吸附量最高可达 5.8 mg/g在 30.0 分钟内达到 25°C。然后将Im-Im-Poly应用到MPE中，重复提取7次后，从半夏中检测到约1.0mg/g麻黄碱。经水、乙醇、甲醇洗涤，甲醇/乙酸（99.0:1.0，v/v）洗脱，成功分离麻黄碱。