Then the eluent which got from above conditions was dehydrogenized by vacuum freezing drying method, the tan powder of BLF was collected.
在此条件下得到的洗脱液再采用真空冷冻干燥的方法，得到竹叶黄酮的黄褐色粉末。
2
The pharmacodynamic result shows that 7-site substituted dehydrogenized silybin ether can be expectantly used for preparing the medicament for preventing and treating the neurodegenerative diseases.