结果：发现水浴蒸干会使脱水穿心莲内酯的色谱峰峰面积积分值大大降低。
Result:The tests results proved to us that the peak of Dehydroandrographolide would drop as the Dehydroan-drographolide CRS was evaporated in a water bath.
方法：用梯度洗脱法测定清火栀麦片中穿心莲内酯和脱水穿心莲内酯的含量。
METHODS Gradient elution method was used to determine the content of andrographolide and dehydroandrographolide in Qinghuo Zhimai tablets.
目的：通过测定穿心莲内酯和脱水穿心莲内酯的含量来控制清火栀麦片的质量。
OBJECTIVE To control the quality of Qinghuo Zhimai tablets by determine the content of andrographolide and chrysophanol dehydroandrographolide.
路边青与穿心莲配伍使用可导致脱水穿心莲内酯的吸收慢、消除快、生物利用度低。
The use of Andrographis together with Clerodendron delayed the absorption, increased the clearance, and decreased the bioavailability of dehydroandrographolide.
方法：采用TLC法对处方中的薄荷、翠云草和穿心莲进行了鉴别；用HPLC法测定了方中脱水穿心莲内酯的含量。
Methods:Mentholum, Selaginella, Dehydroandrographolide in Cuilian Jiedu Tablets were identified by TLC, and the content of Dehydroandrographolide was determined by HPLC.
方法：采用TLC法对处方中的薄荷、翠云草和穿心莲进行了鉴别；用HPLC法测定了方中脱水穿心莲内酯的含量。
Methods:Mentholum, Selaginella, Dehydroandrographolide in Cuilian Jiedu Tablets were identified by TLC, and the content of Dehydroandrographolide was determined by HPLC.
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