title: [Evaluation of green tangerine peel processed with vinegar using HPLC fingerprint technique].
abstract: OBJECTIVE
  To develop an HPLC method for determination of fingerprints and evaluate green tangerine peel (GTP) processed with vinegar.
  
  
  METHODS
  The samples were extracted with 50% ethanol using ultrasonic bath and analyzed on a Chromasil C18 column eluted with methanol and water containing 0.2% acetic acid in a linear gradient program. The flow rate was 1.0 mL x min(-1), and detection wavelength was set at 280 nm.
  
  
  RESULTS
  The RSD values of relative retention times and peak areas of main peaks were all less than 5%. The fingerprints of Geqingpi and Sihuaqingpi were different. The fingerprints of the processed and the unprocessed were almost same, and the fingerprint differences among the different batches processed with the same technology from the same unprocessed GTP were not obvious.
  
  
  CONCLUSIONS
  The influence of processing with vinegar on 50% ethanol extracts were not evident, and the technological pross was stable. It was found that the fingerprints of Geqingpi and Sihuaqingpi were different, but it should be study further.
authors.affiliation: Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China.
authors.forename: Yao-Li
authors.initials: YL
authors.lastname: Wang
authors.forename: Yong-Xin
authors.initials: YX
authors.lastname: Zhang
authors.forename: Shu-Jie
authors.initials: SJ
authors.lastname: Mao
authors.forename: Qi-Wei
authors.initials: QW
authors.lastname: Zhang
mesh_terms: D019342:Acetic Acid; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D002957:Citrus / Q000737:chemistry*; D004355:Drug Stability; D005638:Fruit / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D013678:Technology, Pharmaceutical / Q000379:methods*
chemical_list: D019342:Acetic Acid