目的：研究硫磺熏蒸对白芷中欧前胡素含量变化的影响。方法产地采收白芷的新鲜样品,每份样品均一半按照传统方法进行硫磺熏蒸,另一半切片后自然晾干(非硫磺熏蒸)。采用高效液相色谱法(HPLC)进行白芷中欧前胡素的含量测定,C18色谱柱(4.6 mm×250 mm,5μm),流动相为乙腈-水,梯度洗脱,流速1.0 mL/min,柱温35℃,检测波长选择210～800 nm范围内的最大绘图。结果收集了29批新鲜白芷的根,非硫磺熏蒸和硫磺熏蒸加工获得的白芷药材中欧前胡素的平均含量分别为0.202%、0.120%；与非硫磺熏蒸比较,硫磺熏蒸加工获得的白芷药材中,欧前胡素的含量下降了6.77%～77.56%,平均下降39.86%。结论白芷中欧前胡素的含量经硫磺熏蒸后明显下降,提示白芷的生产和加工不宜采用硫磺熏蒸技术。%Objective To study whether sulphur fumigation can cause changes to the content of imperatorin in Angelicae Dahuricae Radix (Baizhi).Methods The fresh samples of Angelicae Dahuricae Radix were collected from some cultivation bases. Half of each batch root was fumigated with sulfur according to the conventional method, and another half was cut into slices and dried naturally (i.e. without sulfur fumigation). The content of imperatorin was determined by HPLC on C18 column (4.6 mm×250 mm, 5μm) with a gradient mobile phase of acetonitrile-water solution system at the follow rate of 1.0 mL/min, 35℃ of the column temperature, and the max plot in 210-800 nm of the detective wavelength.ResultsTotally 29 batches of fresh roots ofAngelica dahurica were collected. The average contents of imperatorin were 0.202% in the Angelicae Dahuricae Radix with sulfur fumigation and 0.120% in the Angelicae Dahuricae Radix without sulfur fumigation. Compared with the corresponding samples without sulfur fumigation, the content of imperatorin in every Angelicae Dahuricae Radix with sulfur fumigation decreased by 6.77%-77.56% with an average decrease of 39.86%.Conclusion The content of imperatorin decreased significantly in every batch of Angelicae Dahuricae Radix with sulphur fumigation. It shows that the sulphur fumigation method was not suitable for producing and processing Angelicae Dahuricae Radix from fresh roots ofA. dahurica.
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