唐古特大黄药材干燥方法研究

Drying Methods of Rheum tanguticum Maxim. exBalf.

综合唐古特大黄外观色泽、干燥耗时、折干率、有效药用成分(蒽醌、番泻苷、鞣质)含量等因素,探索唐古特大黄药材的最佳干燥方法。结果表明:唐古特大黄干燥过程中,随着水分的散失,生理活性、物理形态、有效成分的含量也随之发生显著的变化,干燥方法对唐古特大黄的品质影响较大。综合唐古特大黄的外观色泽、耗时、耗能、折干率、蒽醌、番泻苷、鞣质含量、设备要求和适宜大规模推广等方面因素,唐古特大黄干燥建议采用阴干、晾晒或45~55℃烘干。

To explore the suitable drying methods for Rheum tanguticumMaxim.exBalf.bycolor,drying time,drying rate and content of active ingredients as indexes.The results showed that：with the water loss of R.tanguticum,drying process,physical activity and physical form and the active ingredient content also changed significant.Different drying methods have a great impact on the quality of R.tanguticum.Combination these indicators with equipment requirements and suitability for large-scale promotion and other aspects into account,the suitable drying method for R.tanguticum is recommended to dryin the shade,or sun-drying or oven-drying at constant 45-55 ℃.