standard of pure puerarin的用法和樣例：
例句
- This paper studied the effect of puerarin on cerebral circulation and cerebral metabolism in rabbit.
觀察了葛根素對兔腦循環及腦代謝的影響。 - The latest civil progress in advancement in separation and purification of Puerarin in Radix Puerarine Lobatae is reviewed.
文章綜述了近年來國內葛根提取物中葛根素的分離純化技術進展。
