Zhengkun Zhang

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High-performance counter-current chromatography (HPCCC) and high performance liquid chromatography coupled with mass spectrometry (HPLC-MS) was efficiently utilized for the separation and(More)
A novel gradient elution was efficiently utilized for the separation of the chemical components with a wide range of polarity from the mixed extract of the Chinese medicinal herb Apocynum venetum or(More)
A liquid chromatography–electrospray ionization mass spectrometry (LC–ESI-MS) method was developed for the analysis and identification of constituents in plant extracts from the leaves of Apocynum(More)
Accelerated solvent extraction (ASE) coupled with high-performance counter-current chromatography (HPCCC) was successfully used for the extraction and online isolation of five chemical constituents(More)
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