title: Validated method for the quantification of atractylenolide III in different processed products of rhizoma Atractylodes Macrocephalae.
abstract: BACKGROUND
  Rhizoma Atractylodes Macrocephalae (RAM) contains several sesquiterpene compounds including atractylenolide III (AO-III). This bioactive compound may be used as a chemical marker for the quality control of different processed RAM products.
  
  
  OBJECTIVE
  To develop and validate an RP-HPLC method for the quantitative determination of AO-III in RAM and in a variety of processed RAM products.
  
  
  METHODS
  HPLC was carried out using a Kromssil C(18) RP-column eluted with methanol-water (70:30) at a flow rate of 1.0  mL/min and with UV detection at 220  nm. Full validation was performed using standard methods.
  
  
  RESULTS
  The linear range of AO-III was 5-50  µg/mL; the regression equation was y = 10210x + 11194 (r = 0.9994) and the average recovery was 101.08% (RSD = 0.98%). The detection and quantification limits for AO-III were determined to be 0.005 and 0.018  µg/mL at signal-to-noise ratios of approximately 3:1 and 10:1, respectively.
  
  
  CONCLUSIONS
  The described HPLC method is appropriate for quality assurance and differentiation of AO-III in RAM and different processed products.
authors.affiliation: Dongfeng Hospital,Yunyang Medical College, Hubei, 442008, People's Republic of China.
authors.forename: Qinhua
authors.initials: Q
authors.lastname: Chen
authors.forename: Peng
authors.initials: P
authors.lastname: Li
authors.forename: Fang
authors.initials: F
authors.lastname: Zheng
authors.forename: Jing
authors.initials: J
authors.lastname: He
authors.forename: Yong
authors.initials: Y
authors.lastname: Yi
mesh_terms: D031174:Atractylodes / Q000737:chemistry*; D007783:Lactones / Q000737:chemistry*; D015203:Reproducibility of Results; D027343:Rhizome / Q000737:chemistry*; D012717:Sesquiterpenes / Q000737:chemistry*
chemical_list: D007783:Lactones; D012717:Sesquiterpenes; C424802:atractylenolide III