摘要
中药知母经硫磺熏蒸制备成含硫知母饮片,利用UPLC-Q-TOF-MS^E结合UNIFI数据分析平台、主成分分析法(PCA)及正交偏最小二乘判别分析(OPLS-DA),分析并在线鉴定了硫磺熏蒸前后知母饮片中的16个主要的差异性成分,其中9个主要存在于熏蒸后知母饮片中;确定了熏蒸后知母饮片中的化学标志物,为硫熏后新产生的亚硫酸酯化衍生物。同时利用UPLC-Q-TOF-MS^E寻找主要化学标志物——知母皂苷BⅡ亚硫酸酯(m/z 983)的手段,建立了知母饮片硫磺熏蒸的快速筛查方法,该方法便捷准确,可作为知母质量控制的有效辅助手段。这是首次分析鉴定了甾体皂苷类成分的亚硫酸酯化衍生物,并应用这一方法筛查硫磺熏蒸的知母饮片。
Sulfur-containing Anemarrhenae Rhizoma decoction pieces were prepared by using sulfur-fumigating procedure. The difference components before and after sulfur fumigation in Anemarrhenae Rhizoma were analyzed and on-line identified by UPLC-Q-TOF-MSE combined with UNIFI informatics platform, principal component analysis （PCA） and orthogonal partial least squares discriminant analysis （OPLS-DA） respectively. As a result, 16 major differences components were identified, and among them, 9 components were mainly from sulfur-fumigated samples. The main chemical markers in sulfur-fumigated Anemarrhenae Rhizoma were identified as the sulfite derivatives newly produced after sulfur-fumigating. Meanwhile, UPLC-Q-TOF-MSE was used to find the main chemical marker anemarrhena saponin BⅡ sulfite （m/z 983）. By using this method, a rapid screening method for sulfur-fumigated Anemarrhenae Rhizoma was established. This was a convenient and accurate detection method for sulfur dioxide residue, and it can be used as an effective assistant method to control the quality of Anemarrhenae Rhizoma. At the same time, it was the first time to identify sulfited derivatives of steroidal saponins, and screen the sulfur-fumigated Anemarrhenae Rhizoma.
出处
《中国中药杂志》
CAS
CSCD
北大核心
2017年第18期3530-3536,共7页
China Journal of Chinese Materia Medica
