The results showed that the contents of total sugar, protein and free anthraquinones in leaves were the highest, and the following were those in root bark.
结果表明，叶片总糖、总蛋白和游离蒽醌含量最高，根皮次之；
OBJECTIVE To study the content change of free and combined anthraquinones in the decocting process of Rhizoma Rhei.
目的：考察大黄粉末煎煮过程中游离蒽醌和结合蒽醌的含量变化。
Using 70% methanol, the Polygonum multiforum extract was concentrated by ultrasonic method . Then concentrated extract was leached with chloroform and separated into free and bound anthraquinones.
何首乌用70%甲醇超声提取浓缩后，用氯仿萃取分离出游离和结合型蒽醌，得到定量用试液。
Results The content of free and total anthraquinones increased uninterrupted.
结果大黄游离蒽醌含量不断升高；
Results The content of free and total anthraquinones increased uninterrupted.
结果大黄游离蒽醌含量不断升高；
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