title: Quality Analysis of Chlorogenic Acid and Hyperoside in Crataegi fructus.
abstract: BACKGROUND
  Crataegi fructus is a herbal medicine for strong stomach, sterilization, and alcohol detoxification. Chlorogenic acid and hyperoside are the major compounds in Crataegi fructus.
  
  
  OBJECTIVE
  In this study, we established novel high-performance liquid chromatography (HPLC)-diode array detection analysis method of chlorogenic acid and hyperoside for quality control of Crataegi fructus.
  
  
  METHODS
  HPLC analysis was achieved on a reverse-phase C18 column (5 μm, 4.6 mm × 250 mm) using water and acetonitrile as mobile phase with gradient system. The method was validated for linearity, precision, and accuracy. About 31 batches of Crataegi fructus samples collected from Korea and China were analyzed by using HPLC fingerprint of developed HPLC method. Then, the contents of chlorogenic acid and hyperoside were compared for quality evaluation of Crataegi fructus.
  
  
  RESULTS
  The results have shown that the average contents (w/w %) of chlorogenic acid and hyperoside in Crataegi fructus collected from Korea were 0.0438% and 0.0416%, respectively, and the average contents (w/w %) of 0.0399% and 0.0325%, respectively.
  
  
  CONCLUSIONS
  In conclusion, established HPLC analysis method was stable and could provide efficient quality evaluation for monitoring of commercial Crataegi fructus.
  
  
  CONCLUSIONS
  Quantitative analysis method of chlorogenic acid and hyperoside in Crataegi fructus is developed by high.performance liquid chromatography.(HPLC).diode array detectionEstablished HPLC analysis method is validated with linearity, precision, and accuracyThe developed method was successfully applied for quantitative analysis of Crataegi fructus sample collected from Korea and China. Abbreviations used: HPLC: High-performance liquid chromatography, GC: Gas chromatography, MS: Mass spectrometer, LOD: Limits of detection, LOQ: Limits of quantification, RSD: Relative standard deviation, RRT: Relative retention time, RPA: Relation peak area.
authors.affiliation: Department of Medical Biomaterials Engineering, College of Biomedical Science, Kangwon National University, Chuncheon 200-701, Korea.
authors.forename: Jin Bae
authors.initials: JB
authors.lastname: Weon
authors.affiliation: Department of Medical Biomaterials Engineering, College of Biomedical Science, Kangwon National University, Chuncheon 200-701, Korea.
authors.forename: Youn Sik
authors.initials: YS
authors.lastname: Jung
authors.affiliation: Department of Medical Biomaterials Engineering, College of Biomedical Science, Kangwon National University, Chuncheon 200-701, Korea; Department of Biomaterials Engineering, Kangwon National University, Chuncheon 200-701, Korea.
authors.forename: Choong Je
authors.initials: CJ
authors.lastname: Ma
keywords: Crataegi fructus; chlorogenic acid; diode array detection; high performance liquid chromatography; hyperoside; quality evaluation