干燥方法对板蓝根药材中表告依春和尿苷含量的影响

Influence of Drying Method on Content of Epigoitrin and Uridine in Isatidis Radix

目的：研究不同干燥方法对板蓝根中表告依春和尿苷含量的影响,为建立适合板蓝根产地加工的干燥方法提供参考。方法：将新采挖的鲜板蓝根随机等份分为12组,分别采用不同温度下的鼓风烘干与远红外线烘干、晾晒、阴干4种方式进行干燥,以高效液相色谱法同时测定表告依春和尿苷含量。结果：各组板蓝根表告依春含量为3.847-5.204 mg/g,尿苷含量为0.701-1.028 mg/g,2种有效成分均在鼓风烘干组样品中含量最高。结论：在该研究考察范围内,建立了板蓝根的最佳干燥方法为55℃鼓风烘干法,对板蓝根的加工生产具有一定的指导意义。

Objective： To study the influence of different drying methods on the content of epigoitrin and uridine in Isatidis Radix.Methods： Fresh Isatidis Radix was processed by four drying methods including airing drying and drying in far infrared oven at different temperature,drying in the sun and drying in the shade.The contents of epigoitrin and uridine were determined by HPLC.Results：The contents of epigoitrin as well as uridine in samples valued from 3.847 - 5.204 mg /g and 0.701 - 1.028 mg /g,respectively.Conclusion： The optimal drying method is airing drying at 55 ℃,which will be serviced in the large-scale processing of Isatidis Radix.