Panax japonicus and its approximation varieties,such as Rhizoma Panacis Majoris and Panax japonicus C. A. Mey. var.major （Burk.） C.Y. Wu et K.M. Feng belong to Panax,which are less commonly used traditional Chinese ...Panax japonicus and its approximation varieties,such as Rhizoma Panacis Majoris and Panax japonicus C. A. Mey. var.major （Burk.） C.Y. Wu et K.M. Feng belong to Panax,which are less commonly used traditional Chinese medicine. Because of similar traits and effectiveness,they were always used as one type of medicine for a long time. Aiming at this phenomenon,the chemical composition and contents of P. japonicus and its approximation varieties from different area were compared in order to provide a chemical basis for clarifying the classification of the genus.展开更多
通过研究料液比、乙醇体积分数、提取温度和超声时间对筋骨草[Schnabelia tetradonta(Sun)C.Y.Wu et C.Chen]中生物碱得率的影响,优选出超声最佳工艺,并以盐酸小檗碱为标准对照测定野生和家种筋骨草生物碱的得率。结果表明,生物碱的最...通过研究料液比、乙醇体积分数、提取温度和超声时间对筋骨草[Schnabelia tetradonta(Sun)C.Y.Wu et C.Chen]中生物碱得率的影响,优选出超声最佳工艺,并以盐酸小檗碱为标准对照测定野生和家种筋骨草生物碱的得率。结果表明,生物碱的最佳提取工艺为药材加25倍的60%乙醇溶液(p H=1),50℃水浴1 h后超声30 min,得到野生筋骨草生物碱得率为0.072%,家种筋骨草生物碱得率为0.099%。该提取工艺合理,生物碱得率较高,为筋骨草生物碱的提取提供参考依据。展开更多
Nutritional components in tender leaves and stems of Yunnanopilia longistaminea （W.Z.Li） C.Y. Wu et D.Z.Li were analyzed . The contents of crude protein and total amino acids were 64.2 and 30.28 mg·g-1 respecti...Nutritional components in tender leaves and stems of Yunnanopilia longistaminea （W.Z.Li） C.Y. Wu et D.Z.Li were analyzed . The contents of crude protein and total amino acids were 64.2 and 30.28 mg·g-1 respectively, which were higher than that of the common vegetables.It was also rich in the contents of VC)(0.56 mg·g-1),crude fiber (18.8 mg·g-1), crude fat (5.7 mg·g-1) and carbohydrate (66.0 mg·g-1). The species is a wild vegetable which can be exploited further.展开更多
[目的]对陇东地区产的掌叶大黄(Rheum palmatumL.)与河套大黄(Rheum hotaoenseC.Y.Cheng et C.T.Kao)根及根茎的化学成分进行研究。[方法]采用超声70%甲醇浸提法和硅胶柱色谱分离纯化,根据理化性质和波谱数据鉴定结构。[结果]从掌叶大...[目的]对陇东地区产的掌叶大黄(Rheum palmatumL.)与河套大黄(Rheum hotaoenseC.Y.Cheng et C.T.Kao)根及根茎的化学成分进行研究。[方法]采用超声70%甲醇浸提法和硅胶柱色谱分离纯化,根据理化性质和波谱数据鉴定结构。[结果]从掌叶大黄与河套大黄根及根茎的70%甲醇提取物中共同分离鉴定出9种化合物,分别为:没食子酸(Ⅰ)、大黄酸(Ⅱ)、大黄素(Ⅲ)、芦荟大黄素(Ⅳ)、芦荟大黄素-8-葡萄糖甙(Ⅴ)、大黄酚(Ⅵ)、大黄素甲醚(Ⅶ)、番泻甙A(Ⅷ)、番泻甙B(Ⅸ)。除此之外,从河套大黄的根中又分离出1种化合物———土大黄甙。[结论]河套大黄不能代替掌叶大黄作药用。展开更多
基金Supported by the National Natural Foundation of China(30873383)~~
文摘Panax japonicus and its approximation varieties,such as Rhizoma Panacis Majoris and Panax japonicus C. A. Mey. var.major （Burk.） C.Y. Wu et K.M. Feng belong to Panax,which are less commonly used traditional Chinese medicine. Because of similar traits and effectiveness,they were always used as one type of medicine for a long time. Aiming at this phenomenon,the chemical composition and contents of P. japonicus and its approximation varieties from different area were compared in order to provide a chemical basis for clarifying the classification of the genus.
文摘Nutritional components in tender leaves and stems of Yunnanopilia longistaminea （W.Z.Li） C.Y. Wu et D.Z.Li were analyzed . The contents of crude protein and total amino acids were 64.2 and 30.28 mg·g-1 respectively, which were higher than that of the common vegetables.It was also rich in the contents of VC)(0.56 mg·g-1),crude fiber (18.8 mg·g-1), crude fat (5.7 mg·g-1) and carbohydrate (66.0 mg·g-1). The species is a wild vegetable which can be exploited further.
文摘[目的]对陇东地区产的掌叶大黄(Rheum palmatumL.)与河套大黄(Rheum hotaoenseC.Y.Cheng et C.T.Kao)根及根茎的化学成分进行研究。[方法]采用超声70%甲醇浸提法和硅胶柱色谱分离纯化,根据理化性质和波谱数据鉴定结构。[结果]从掌叶大黄与河套大黄根及根茎的70%甲醇提取物中共同分离鉴定出9种化合物,分别为:没食子酸(Ⅰ)、大黄酸(Ⅱ)、大黄素(Ⅲ)、芦荟大黄素(Ⅳ)、芦荟大黄素-8-葡萄糖甙(Ⅴ)、大黄酚(Ⅵ)、大黄素甲醚(Ⅶ)、番泻甙A(Ⅷ)、番泻甙B(Ⅸ)。除此之外,从河套大黄的根中又分离出1种化合物———土大黄甙。[结论]河套大黄不能代替掌叶大黄作药用。
