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有人认为“中药煎得越浓效果越好”。实际上毫无科学根据。煎中药的过程,实际上是中药饮片中的有效成分不断地向水中析出溶解的过程。当中药饮片本身与药液中的有效成分浓度平衡了,也就停止析出了。此时若继续煎煮中药,不仅药物内的有效成分不会再析出溶解,还会使药液中有效成分不断地蒸发减少,甚至在过长的高温条件下遭到破坏,使药效明显降低。同时,过于浓缩的药汁其味更苦,从而服后易引来恶心、呕吐等副作用。
Some people think that the more effective the traditional Chinese medicine is, the better it will be. There is virtually no scientific basis. The process of frying Chinese medicine is actually a process in which the active ingredients in Chinese Herbal Pieces continuously dissolve and dissolve in water. When the concentration of the active ingredients in the Herbal Pieces itself and the medicinal liquid is balanced, the precipitation is stopped. If the boiling Chinese medicine is continued at this time, not only the active ingredients in the medicine will not be dissolved and dissolved, but also the effective components in the liquid will continuously evaporate and decrease, even under long-term high-temperature conditions, and the efficacy will be significantly reduced. . At the same time, over-concentrated concoctions have a more bitter taste and can easily cause nausea, vomiting and other side effects after serving.