Isolation and Identification of Chemical Constituents from Zhideke Granules by Ultra-Performance Liquid Chromatography Coupled with Mass Spectrometry

Abstract

Chemical constituents from Zhideke granules were rapidly isolated and identified by ultra-performance liquid chromatography (UPLC) coupled with hybrid quadrupole-orbitrap mass spectrometry (MS) in positive and negative ion modes using both full scan and two-stage threshold-triggered mass modes. The secondary fragment ion information of the target compound was selected and compared with the compound reported in databases and related literatures to further confirm the possible compounds. A total of 47 chemical constituents were identified from the ethyl acetate extract of Zhideke granules, including 21 flavonoids and glycosides, 9 organic acids, 4 volatile components, 3 nitrogen-containing compounds, and 10 other compounds according to the fragmentation patterns, relevant literature, and MS data. The result provides a new method for the analysis of chemical constituents of Zhideke granules which laid the foundation for quality control and the study of pharmacodynamic materials of Zhideke granules.

Phenolic Profiles and Biological Activities of Extracts from Edible Wild Fruits Ehretia tinifolia and Sideroxylon lanuginosum

“…Moreover, the fragment io m/z 493 [M-H] − can be formed by the loss of CO2 (44 Da) of the ion at m/z 537, whe fragment ions at m/z 295 [M-H-CO2-C9H10O5] − and m/z 312 [M-H-C9H8O4] − were der from the ion at m/z 493 due to the loss of C9H10O5 and C9H8O4 fragment ions. These ments are those reported by Huang et al [47] for lithospermic acid. Both RA and l spermic acid derivatives could be relevant for the biological activity of these extracts RA has been reported to be a compound with significant antioxidant and antineopl activity [32], and the lithospermic acid and its mono-and dimethyl esters are know inhibit adenylate cyclase [48].…”

“…However, it was observed that the most abundant compounds in E. tinifolia extract produced, in their mass analysis, pseudomolecular ions at m/z 359 and 537, which can be attributed to rosmarinic acid (RA) and different lithospermic acid derivatives, respectively (Table 2). Thus, compound 30, which showed a retention time of 51.02 min (Figure 1), was identified as RA, based on its parent ion (m/z 359) and its fragmentation pattern, which was as follows: fragment at m/z 359 corresponded to the RA radical ion [47] for lithospermic acid. Both RA and lithospermic acid derivatives could be relevant for the biological activity of these extracts since RA has been reported to be a compound with significant antioxidant and antineoplastic activity [32], and the lithospermic acid and its mono-and dimethyl esters are known to inhibit adenylate cyclase [48].…”

LC-QToF chemical profiling of Euphorbia grantii Oliv. and its potential to inhibit LPS-induced lung inflammation in rats via the NF-κB, CY450P2E1, and P38 MAPK14 pathways

“…Nowadays liquid chromatography–mass spectrometry (LC–MS) is currently the most widely used method for characterizing plant secondary metabolites (Selvi et al 2018 ; Sun et al 2018 ). In the last few decades, liquid chromatography–time-of-flight–mass spectrometry (LC-TOF–MS) has emerged as a sophisticated technique with fast scanning and high mass resolution properties (Huang et al 2020 ). To the best of our knowledge, the present study may be the first report on the chemical profiles of TME and DCMF of E. grantii aerial parts.…”