4 结果
An HPLC-DAD with a short monolithic column method was used for rapid, sensitive and simultaneous determination of liensinine, isoliensinine and neferine in human serum. Chromatographic separation was achieved on an RP-HPLC chromolithic column (50mm×4.6mm i.d.), with a mobile phase of
Bisbenzylisoquinoline alkaloid, nelumboferine which was recently isolated from the embryo of Nelumbo nucifera, and stereoisomers of neferine, which is a major alkaloid of the embryo of N. nucifera, were stereoselectively synthesized. Pharmacological activity of nelumboferine, stereoisomers of
Lotus leaves are a popular remedy in Asia to treat obesity, insomnia and mental impairment; alkaloids are considered most relevant for bioactivity. In this study the first CE method for the determination of all major alkaloids ((-)-nuciferine, (-)-nornuciferine, (-)-caaverine, (-)-armepavine,
The variations in antioxidant activity and concentration of functional components in the ethanol extracts of lotus seeds and rhizomes based on the growing region and dryness were investigated. Free radical scavenging activity, total phenolic and flavonoid content, and concentration of several