title: Simultaneous Qualitation and Quantitation of Chlorogenic Acids in Kuding Tea Using Ultra-High-Performance Liquid Chromatography-Diode Array Detection Coupled with Linear Ion Trap-Orbitrap Mass Spectrometer.
abstract: Kuding tea, the leaves ofIlex KudingchaC.J. Tseng, has been applied for treating obesity, hypertension, cardiovascular disease, hyperlipidemia, and so on. The chlorogenic acids (CGAs) in Kuding tea have shown excellent antioxidative, antiobesity, anti-atherosclerotic and anticancer activities. Nevertheless, the chemical profiles of CGAs in Kuding tea have not been comprehensively studied yet, which hinders further quality control. In the present study, a sensitive ultra-high-performance liquid chromatography-diode array detection coupled with a linear ion trap-Orbitrap (UHPLC-DAD-LTQ-Orbitrap) method was established to screen and identify CGAs in Kuding tea. Six CGA standards were first analyzed in negative ion mode with a CID-MS/MS experiment and then the diagnostic product ions (DPIs) were summarized. According to the retention behavior in the RP-ODS column, accurate mass measurement, DPIs and relevant bibliography data, a total of 68 CGA candidates attributed to 12 categories were unambiguously or preliminarily screened and characterized within 18 min of chromatographic time. This was the first systematic report on the distribution of CGAs in Kuding tea. Meanwhile, the contents of 6 major CGAs in Kuding tea were also determined by the UHPLC-DAD method. All the results indicated that the established analytical method could be employed as an effective technique for the comprehensive and systematic characterization of CGAs and quality control of the botanic extracts or Chinese medicinal formulas that contain various CGAs.
authors.affiliation: Engineering Laboratory for National Healthcare Theories and Products of Yunnan Province, College of Pharmaceutical Science, Yunnan University of Traditional Chinese Medicine, Kunming 650500, Yunnan, China. checpu@163.com.
authors.forename: Yanyun
authors.initials: Y
authors.lastname: Che
authors.affiliation: Beijing Research Institution of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China. wangzhibin4804@126.com.
authors.forename: Zhibin
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Engineering Laboratory for National Healthcare Theories and Products of Yunnan Province, College of Pharmaceutical Science, Yunnan University of Traditional Chinese Medicine, Kunming 650500, Yunnan, China. zzy299106@163.com.
authors.forename: Zhiyun
authors.initials: Z
authors.lastname: Zhu
authors.affiliation: Engineering Laboratory for National Healthcare Theories and Products of Yunnan Province, College of Pharmaceutical Science, Yunnan University of Traditional Chinese Medicine, Kunming 650500, Yunnan, China. mdmy0622@163.com.
authors.forename: Yangyang
authors.initials: Y
authors.lastname: Ma
authors.affiliation: Engineering Laboratory for National Healthcare Theories and Products of Yunnan Province, College of Pharmaceutical Science, Yunnan University of Traditional Chinese Medicine, Kunming 650500, Yunnan, China. zzyyqq2003@163.com.
authors.forename: Yaqiong
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Engineering Laboratory for National Healthcare Theories and Products of Yunnan Province, College of Pharmaceutical Science, Yunnan University of Traditional Chinese Medicine, Kunming 650500, Yunnan, China. kaoyanak@163.com.
authors.forename: Wen
authors.initials: W
authors.lastname: Gu
authors.affiliation: Beijing Research Institution of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, China. zhangjiayu0615@163.com.
authors.forename: Jiayu
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Engineering Laboratory for National Healthcare Theories and Products of Yunnan Province, College of Pharmaceutical Science, Yunnan University of Traditional Chinese Medicine, Kunming 650500, Yunnan, China. Rao_gx@163.com.
authors.forename: Gaoxiong
authors.initials: G
authors.lastname: Rao
mesh_terms: D002726:Chlorogenic Acid / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid; D011801:Quinic Acid / Q000031:analogs & derivatives / Q000032:analysis; D012015:Reference Standards; D021241:Spectrometry, Mass, Electrospray Ionization; D053719:Tandem Mass Spectrometry; D013662:Tea / Q000737:chemistry*
chemical_list: D013662:Tea; C472707:caffeoylquinic acid; D011801:Quinic Acid; D002726:Chlorogenic Acid
keywords: Kuding tea (Ilex Kudingcha); UHPLC-LTQ-Orbitrap MS; chlorogenic acids (CGAs)