Four steam distillation processes such as waterdipped,repeated,overwater and diffused distillation are compared for determining the yield of tea tree oil of small branches and leaves of Melaleuca,and for analyzing the content of major component.
采用水中蒸馏、复蒸、水上蒸馏、扩散蒸馏4种水蒸气蒸馏方式,对白千层小枝叶进行了得油率测定及主要成分含量的分析。
The oven dried leaves and stems from Huperzia serrata were analyzed for the total contents of flavonoids by spectrophotometryic method,and the optimal solvent concentration and the best time of extraction were also obtained.
本实验利用分光光度法对千层塔植物茎叶内的黄酮类物质进行了初步测定 ,确定了总黄酮含量提取的适宜溶剂浓度和提取的适宜时间。