中药材的泛油俗称“走油”,即指某些药材所含的油质发生酸败的现象,也有把某些含粘性糖质的药材因受潮发热后,表面发软发粘,呈现出一种油状物质,同时伴随着颜色加深或变色的现象,叫做泛油。这些药材因油质和糖质的分解作用,已改变了原有药物的性质,故疗效大減甚至失效,不堪作 The oil of traditional Chinese medicinal materials is commonly known as “moving oil”, which means that the oil contained in certain medicinal materials is rancid, and some medicinal materials containing viscous sugars are hot and sticky due to moisture. This kind of oily substance, accompanied by the phenomenon of darkening or discoloration, is called pan-oil. Because of the decomposition of oil and carbohydrates, these herbs have changed the nature of the original drugs, so the efficacy has diminished or even failed.