The solvent may divide into the water, the parent organic solvent and kisses the fat organic solvent, is dissolved the matter also to have the water affinity and kisses the fat difference.

• 溶剂可分为水、亲本性有机溶剂及亲脂性有机溶剂,被溶解物质也有亲水性及亲脂性的不同。我们就可以通过时中草药成分结构分析,去估计它们的此类性质和选用的溶剂。