Ultra‐high‐performance liquid chromatography‐Quadrupole‐Exactive‐Orbitrap‐tandem mass spectrometry‐based putative identification for Eucommiae Folium (Duzhongye) and its quality‐marker candidate for pharmacopeia

Abstract

Eucommiae Folium (Duzhongye) is a traditional Chinese medicine with a long history of use in China. However, its quality-marker in Chinese Pharmacopoeia is poorly defined nowadays. The study, therefore, conducted an ultra-high-performance liquid chromatography coupled with hybrid quadrupole-orbitrap tandem mass spectrometry analysis to obtain accurate data. The obtained data were then compared with the authentic standards library using Xcalibur 4.1 software package and TraceFinder General Quan. Through the comparison, the study has putatively identified 26 bioactive compounds, which include 17 flavonoid derivatives (catechin, quercetin 3-gentiobioside, quercetin 3-O-β-D-glucose-7-O-β-D-gentiobioside, taxifolin, myricetin 3-O-galactoside, myricitrin, hyperoside, rutin, isoquercitrin, quercetin 3-O-β-xylopyranoside, quercitrin, isorhamnetin 3-O-β-D-glucoside, quercetin, kaempferol, S-eriodictyol, S-naringenin, and phloridzin), four caffeoylquinic acids (neochlorogenic acid, chlorogenic acid, isochlorogenic acid A, and isochlorogenic acid C), two alkaloids (vincamine and jervine), one lignan (pinoresinol), one xanthone (cowaxanthone B), and one steroid (cholesteryl acetate). Of these, flavonoid isoquercitrin is recommended as the new and additional pharmacopeia quality-marker candidate, which can not only overcome the unreliability of old quality-marker but also recognize the possible counterfeit.

Database-aided UHPLC-Q-orbitrap MS/MS Strategy Putatively Identifies 52 Compounds from Wushicha Granule to Propose Anti-counterfeiting Quality-markers for Pharmacopoeia

“…However, these studies can help Pharmacopoeia Commission to nd a new and applicable Q-marker. This has highlighted the mission of our studies [15],[18], [17] .…”

“…The methanolic solution was then ltered through a 0.45 µm membrane, and kept in cell-bottle at 2-6°C for analysis. The ultra-performance liquid chromatography was conducted, according to the previous method [15], [16] ; while the Q-orbitrap MS analysis was performed in line with our previous studies [17] . However, the MS scanning scope was set as m/z 0-1500.…”

“…(4) The present study regarding Pharmacopoeia is not identical with the Pharmacopoeia itself. As stated by our tem [15], [18] , the studies Pharmacopoeia have neither administrative compulsion nor legal authority.…”

Study on chemical constituents and fingerprints of Phellodendron amurense Rupr. based on ultra‐performance liquid chromatography–quadrupole–time‐of‐flight–mass spectrometry

“…The carbonyl group, (C=O) molecules at m/z 336.1238 and 322.1072 were neutrally lost to form two fragment ions m/z 308.1283 and m/z 294.1126. According to references and comparison with reference substances, it was speculated that the compound was palmatine [13]. Its mass spectrum and structure are shown in Figure S4, and the possible mass spectrum fragmentation pathway is shown in Figure S5.…”

Integrated strategy facilitates rapid in‐depth chemome characterization of traditional Chinese medicine prescriptions: Shengbai oral liquid as a case

“…The pronounced therapeutical benefits of traditional Chinese medicine prescriptions (TCMPs) have been admitted by more and more people all over the world, in particular for the clinical treatments of those metabolic disorders and chronic diseases [1,2]. However, TCMPs are widely complained about in terms of unclear efficacy materials and quality control difficulty [3,4]. The prerequisite to address either challenge is, exactly, the clarification of the chemical profile, termed as chemome [5,6].…”