ABSTRACT: OBJECTIVE To analyze the effects of sun drying, blast drying and microwave drying equipment on the volatile oil of Curcuma longa Wenyujin Rhizoma Concisum. METHODS The volatile oil was extracted by steam distillation after Curcuma Curcuma was dried, analyzed and identified by GC-MS, and then the relative contents of each component were determined.
Results Twenty-six components were identified in volatile oil of sun dried products, 29 in blast dried products and 28 in microwave dried products. The relative content of zedoary Dione was the highest among the three dried products, especially in sun dried products, but it did not contain neozedoary dione.
CONCLUSION After drying by three methods, the components of volatile oil from Curcuma longa L. tablets are basically the same, but the relative contents are different. Under the conditions of blast drying and microwave drying, the complex isomerization of curcumadione and neocurcumadione may occur, which changes the relative content of curcumadione.
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