The purification methods commonly used in the analysis of traditional<br/>Chinese medicine preparations include ( ) A: Liquid-liquid extraction B: chromatography C: precipitation method D: distillation

Which of the following methods do not belong to solvent extraction? () A: Simultaneous distillation and extraction; B: Solvent assisted flavor evaporation; C: Solid phase microextraction; D: Direct solvent extraction

Coumarin<br/>compounds can be extracted by the following methods except __. A: Solvent extraction B: Maceration with cold water C: Extract with alkaline and precipited with acid D: Steam Distillation E: Sublimation