Identification of -glycosyl flavones by high performance liquid chromatography electrospray ionization mass spectrometry and quantification of five main -glycosyl flavones in .

is commonly applied in China as a traditional Chinese medicine (TCM), however the quality control of it is incomplete. In this work, we aim to identify and quantify the structures of -glycosyl flavones in . High performance liquid chromatography-diode array detector (HPLC-DAD) and High performance liquid chromatography-electrospray ionization-multiple stage tandem mass spectrometry (HPLC-ESI-MS) methods were combined to identify -glycosyl flavones and determine their contents.

Simultaneous identification and determination of flavonoids in Dendrobium officinale.

Background: The quality of material medicine resources has had a considerable impact on the development of the health industry, which has created a bottleneck for traditional Chinese medicine (TCM). Dendrobium officinale, which has been widely used for health prevention in TCM, has become a high-nutritive health food that is strongly recommended by many white-collar workers and people who pay more attention to their health. The aim of this study was to develop a method to authenticate and evaluate D.