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柴胡注射液是一种较好的发表解热药,主要用于普通感冒、流行性感冒和疟疾的退热及镇痛。为了提高柴胡注射液挥发油的含量,采取盐析蒸馏法提取柴胡中的挥发油,由于强电解质氯化钠的存在,提高了水液的沸点,有利于挥发油蒸出完全,且盐析作用降低了挥发油在水中的溶解度,使挥发油含量提高。本试验采用紫外线分光光度法,在波长278±1mm 处测吸收度作为挥发油的含量指标,从多次实验结果分析,30%盐溶液虽比
Bupleurum injection is a good antipyretic drug and it is mainly used for fever, analgesia and analgesia in common colds, influenza, and malaria. In order to increase the volatile oil content of Bupleurum chinense injection, the volatile oil in Bupleurum chinense was extracted by salting-out distillation method. Because of the presence of strong electrolyte sodium chloride, the boiling point of the aqueous liquid was increased, and the volatile oil was completely distilled out, and the salting-out effect was reduced. The solubility of volatile oil in water increases the content of volatile oil. In this test, ultraviolet spectrophotometry was used to measure the absorbance at the wavelength of 278±1mm as an indicator of volatile oil content. From the results of many experiments, the 30% salt solution was