The HPLC efflunts are screened with their UV spectra by DAD and the efflunts of intereste O6 - MG and N7 - MG are collected for MS analysis.

• HPLC法通过保留时间及各洗提物的UV吸收光谱在线检测，筛选出感兴趣的目标化合物（N7－MG，O6－MG），再通过质谱（EIMS及FABMS）鉴定。