目的:采用基于NMR的代谢组学技术结合多元统计分析手段研究绿豆与绿豆皮的化学组成差异。方法:收集绿豆样本14批,利用1H NMR方法检测样本中所有含氢信号的物质,获得其代谢轮廓,并采用2D NMR图谱分析以及结合标准品对照的方法进行结构指认。为准确揭示二者的化学组成差异,首先采用SIMCA-P13软件进行主成分分析,以反映数据的原始状态和自然分布情况,随后通过无监督的偏二乘判别分析(PLS-DA)
Fatty acid profiling has been widely used in the bacteria species identification, we hypothesized that fatty acid characteristics might discriminate the Panax herbs according to species.To test the hy
为了比较恒山黄芪和川黄芪在分子水平上的差异,首先采用基于1H NMR的代谢组学技术对恒山黄芪和川黄芪进行化学分析,并找出其差异性,然后对药典规定的黄芪甲苷和毛蕊异黄酮葡萄糖苷含量进行测定,再对二者的ITS2片段进行测序.结果共指认出代谢产物23种,主成分分析显示,恒山黄芪和川黄芪可以明显区分开,恒山黄芪中的天冬氨酸、γ-氨基丁酸和柠檬酸以及黄芪甲苷和毛蕊异黄酮葡萄糖苷含量较高,而川黄芪中的苏氨酸、
目的:运用UPLC-Q-TOF-MS结合主成分分析(PCA)技术对不同产地的三种北柴胡、狭叶柴胡、银州柴胡进行比较分析.方法:采用超声波法提取柴胡药材中柴胡皂苷A、D,以液质联用技术进行含量测定,结合产地、品种进行主成分分析.结果:样品柴胡皂苷A的含量介于0.0452%-0.3963%,柴胡皂苷D的含量介于0.1082%-0.3673%;主成分分析显示三种柴胡分别按品种或产地的异同得以区分.结论:
Carbon tetrachloride (CC14) is commonly used as a model toxicant to induce chronic and acute liver injuries.In this study, metabolite profiling and gene expression analysis of liver tissues were perfo
选取30只SHR大鼠随机分为三组:模型组,卡托普利组,清热降压胶囊组,wistar大鼠10只作为正常对照组,连续给药14天后取海马组织,采用核磁共振(1H-NMR)代谢组学方法探讨高血压大鼠的海马组织损伤以及清热降压胶囊的保护作用.研究结果发现卡托普利组海马区代谢轮廓明显异于其余三组,另三组大鼠样本分类的趋势非常明显,提示清热降压胶囊能显著改善大鼠海马组织的代谢,鉴定4种代谢产物为二甲基甘氨酸、甘
Ethnopharmacological relevance: Bu-zhong-yi-qi-tang (BT) is one of a classical formula for descending of spleen-yang, viscerotosis with hyposplenic qi, prolaps of uterus, and prolaps of rectum due to
Ethmopharmcology relevance: Ganfule(GFL),one of herbal medicines formula in china, has been widely used as the prevention of hepatic cirrhosis, hepatitical viral and liver cancer agent.However, its ma