Abstract
The root of Panax quinquefolius L. (RPQ) is considered as an important functional food and rich in bioactive components, ginsenosides. To comprehensively characterize ginsenosides and evaluate the quality of RPQ from different sources, UPLC-Triple TOF-MS coupled with UFLC-ESI-MS/MS was applied to untargeted metabolites and targeted analysis for the first time. In untargeted metabolites analysis, a total of 225 ginsenosides were identified from RPQ using UPLC-Triple TOF-MS combined with SWATH data-independent strategy. Furthermore, the contents of 39 targeted ginsenoside markers in 14 RPQ samples were analyzed by a rapid and sensitive UFLC-ESI-MS/MS method. In addition, the results of chemometric analysis showed the quality of American RPQ was distinguished from that of Chinese RPQ according to the amount of targeted ginsenosides. This newly developed approach provides a powerful tool for enriching the diversity of saponins database and assessing the quality of RPQ, which can be further extended to other ginseng products and functional foods.
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