不同制干工艺对杜仲叶药效成分的影响

Effects of Different Drying Methods on Medicinal Components in Leaves of Eucommia ulmoides

为提高杜仲叶的利用价值,更好地开发、保护和合理利用杜仲资源,采用多指标综合评分法研究不同制干工艺对杜仲叶药效成分的影响。结果表明:杜仲叶的绿原酸含量以热风杀青80℃烘干工艺最高,为1.059 7%;松脂醇二葡萄糖苷含量以蒸青后80℃烘干工艺最高,为0.521 6%;总黄酮含量以热风杀青70℃烘干工艺最高,为11.910 0%;水溶性浸出物含量以蒸青后80℃烘干工艺最高,为41.980 0%;醇溶性浸出物含量以热风杀青70℃烘干工艺最高,为43.490 0%。多指标综合评分以蒸青后80℃烘干工艺的最高,为0.872 5;建议生产上用蒸青后80℃烘干工艺对杜仲叶进行制干处理。

The effects of different drying methods on medicinal components in leaves of Eucommia ulmoides was evaluated by the multi-index comprehensive scoring method to improve the utilization value of E. ulrnoides leaves and preferably develop, protect and utilize E. ulmoides resources. Results： The ehlorogenic acid content in E. ulmoides leaves dried with hot wind at 80℃ is the highest （1. 059 7%）. The pinoresinol diglueoside content in E. ulmoides leaves dried at 80℃ after steaming is the highest （0. 521 6%）. The flavonoids content in E. ulmoides leaves dried with hot wind at 70℃ is the highest （11. 910 0%）. The water soluble extracts content in E. ulmoides leaves dried at 80℃ after steaming is the highest （41. 980 0%）. The ethanol soluble extracts content in E. ulmoides leaves dried with hot wind at 70℃ is the highest （43. 490 0%）. The comprehensive score of the drying at 80℃ after steam method is 0. 872 5 （the highest） based on the multi-index comprehensive scoring method. In conclusion, the method of drying at 80℃ after steam should be used in drying of E. uLmoides leaves.