结合有关川木香的历代文献记载，对川木香及煨制法研究现状进行综述，这将对川木香的合理开发、临床应用等具有指导意义。
It will be helpful for guiding the rational exploitation and clinical application to study the historical literatures and current situation about Radix Vladimiriae and its baking methods.
目的：研究土木香挥发油的化学成分，并比较水蒸气蒸馏提取(SD)与超临界CO2萃取(SFE)所得土木香挥发性成分的差异。
Objective: to study the chemical constituents of the essential oil of Inula helenium L. were extracted by steam distillation (SD) and supercritical-CO2 fluid (SFE).
土木香大型粗糙的植物(土木香旋覆花属)，原产于中亚，花黄色，头状花序呈辐射状向四周延伸，根入药。
A tall, coarse plant (Inula helenium) native to central Asia, having rayed yellow flower heads. The roots are used medicinally.
采用该方法，异土木香内酯与土木香内酯的提取率大于70%，其纯度大于90%。
The extraction yield of the lactones under the optimal method was above 70%, and the purity was above 90%.
采用该方法，异土木香内酯与土木香内酯的提取率大于70%，其纯度大于90%。
The extraction yield of the lactones under the optimal method was above 70%, and the purity was above 90%.
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