不同干燥方法对潞党参药材品质的影响

目的?比较不同干燥方法对潞党参药材品质的影响，优选出潞党参的干燥工艺。方法?采集山西平顺产新鲜党参，分别采用传统与现代干燥方法加工，以党参炔苷、苍术内酯Ⅲ、紫丁香酚苷、党参多糖的含量，药材的外观性状为评价指标，探讨不同干燥方式对潞党参品质的影响；同时结合干燥时间、能耗等因素对各干燥方式综合评价，优选最佳干燥工艺。结果?不同干燥方法和条件下，潞党参功效物质含量差异明显，在低温下较稳定，温度过高会对其造成损失，若以党参炔苷、苍术内酯Ⅲ、紫丁香酚苷含量为指标，红外干燥方式最佳；以党参总多糖含量为指标，红外、热风及微波干燥方式均较好；综合功效物质含量、样品外观、干燥时间及能耗等多因素综合评价得出温度60?℃，红外干燥或热风干燥均为潞党参的适宜干燥方法。结论?不同干燥方法对潞党参药材品质有较大影响，通过多元指标监测潞党参的干燥工艺可实现潞党参加工的精准调控，为生产中提升潞党参药材品质提供借鉴。 

Effects of Different Drying Methods on Quality of Codonopsis Radix

OBJECTIVE?To compare the effects of different drying methods on the quality of Codonopsis Radix， and screen out the suitable drying process. METHODS? Fresh roots of Codonopsis pilosula collected from Pingshun， Shanxi were processed by traditional and modern drying methods， separately. The contents of lobetyolin， atractylactone Ⅲ， syringol， polysaccharide and appearance traits of medicinal materials were used as evaluation indicators to assess the effects of different drying methods on the quality of Codonopsis Radix. Meanwhile， the best drying method of Codonopsis Radix was optimized by comprehensive evaluation of different drying methods combining with dry time and energy consumption. RESULTS?Different drying methods and conditions caused significant differences in the contents of functional substances which were stable at low temperature and decreased at excessively high temperature in Codonopsis Radix. The infrared drying method was preferred when the contents of lobethal， atractyloside Ⅲ and glycosides as indexes. Taking the total polysaccharide content as an index， infrared， hot air and microwave were suitable drying methods for Codonopsis Radix. Considering the functional substance content， sample appearance， drying time and energy consumption together， the optimal drying method for Codonopsis Radix was infrared or hot air drying at 60?℃. CONCLUSION?The quality of Codonopsis Radix processed by different drying methods varied greatly. The precise regulation and control of Codonopsis Radix processing can be achieved by monitoring the drying method through multiple indicators， which provided a reference for improving the quality of Codonopsis Radix medicinal materials in production.