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논문 기본 정보

자료유형
학술저널
저자정보
Won Tae Jeong (Chungbuk National University) Heung Bin Lim (Chungbuk National University)
저널정보
한국분석과학회 분석과학 분석과학 제30권 제6호
발행연도
2017.12
수록면
379 - 389 (11page)

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초록· 키워드

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In this study, we set up an analytical method that can be used for rapid and accurate determination of representative isoquinoline alkaloids in medicinal plants using UPLC-ESI-Q-TOF MS (ultra pressure liquid chromatography–electrospray ionization–quadrupole–time-of-flight mass spectrometry). The compounds were eluted on a C18 column with 0.1 % formic acid and acetonitrile, and separated with good resolution within 13 min. Each of the separated components was characterized by precursor ions (generated by ESI-Q-TOF) and fragment ions (produced by collision-induced dissociation, CID), which were used as a reliable database. We also performed method validation: analytes showed excellent linearity (R2, 0.9971–0.9996), LOD (5–25 ng/mL), LOQ (17–82 ng/mL), accuracy (91.6–97.4 %) as well as intra- and inter-day precisions (RSD, 1.8–3.2 %). In the analysis of Chelidonium majus L., magnoflorine, coptisine, sanguinarine, berberine and palmatine were detected by matching retention times and characteristic fragment ion patterns of reference standards. We also confirmed that, among the quantified components, coptisine was present in the highest quantity. Furthermore, alkaloid profiling was carried out by analyzing the fragment ion patterns corresponding to peaks of unknown components. In this manner, protopine, chelidonine, stylopine, dihydroberberine, canadine, and nitidine were tentatively identified. We also proposed the molecular structure of the fragment ions that appear in the mass spectrum. Therefore, we concluded that our suggested method for the determination of major isoquinoline alkaloids by UPLC-Q-TOF can be useful not only for quality control, but also for rapid and accurate investigation of phytochemical constituents of medicinal plants.

목차

Abstract
1. Introduction
2. Experiments
3. Result and Discussion
4. Conclusions
References

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UCI(KEPA) : I410-ECN-0101-2018-433-001587760