不同干燥方法对虎杖主要有效成分含量的影响

Effect of different drying methods on active components contents of Huzhang

目的:比较不同干燥方法对虎杖有效成分含量的影响,为虎杖的产地初加工提供科学依据。方法:将采挖的鲜虎杖随机分组,分别采用晒干、阴干、50℃低温干燥、高温杀青干燥、真空冷冻干燥方法进行干燥,以HPLC法测定虎杖中虎杖苷、白藜芦醇、大黄素-8-O-β-D-葡萄糖苷、大黄素、大黄素甲醚的含量为评价指标,比较5种方法处理的虎杖药材质量优劣。结果:不同干燥处理方法后有效成分含量差异较大,其中晒干处理使有效成分损失最多,低温干燥、冷冻干燥、自然阴干有利于虎杖有效成分的保留。结论:从经济成本和成分保留及实用性综合分析,阴干更宜于虎杖的干燥处理。

Objective： To provide a scientific basis for the original processing of Huzhang by comparing effect of different drying methods on active components content. Method： The fresh medicinal material was divided into 5 groups randomly and treated using the methods of drying methods including natural drying in the sun, natural drying in the shade, oven 50℃ low- temperature drying, high-temperature drying under 105 ℃, and vacuum freeze-drying. The contents of polydatin, resveratrol, emodin-8-O-glucoside, emodin and physcion were used as examine indicators to compared the effect of different methods. Result： Significant differences were found among components contents after treated with different drying methods. The drying in the sun caused the most loss of active ingredients. However, low-temperature drying, freeze-drying and drying in the shade were beneficial for the active components reservation. Conclusion： Comprehensively considering cost, remained active components and practicability, the method of drying in the shade is suggested to be adopted for Huzhang processing.