title: [Infrared spectroscopy technology, one of the faster and more convenient methods to detect the stability of stored Niuxi].
abstract: OBJECTIVE
  To detect the change of Niuxi in reserve and establish one easier method of evaluating the quality change of Niuxi.
  
  
  METHODS
  Infrared spectroscopy and compare software were used to distinguish the different Niuxi, and simulation testing were used to observe calefactive stability.
  
  
  RESULTS
  There were obvious difference between transmutative and normal Niuxi, and Niuxi had evident change when the temperature above 140 degrees C in the simulation testing.
  
  
  CONCLUSIONS
  Infrared spectroscopy can be used to evaluae the quality stability of Niuxi. It is one tried method to provide the establishment of reserve and torrefaction conditions.
authors.affiliation: Beijing University of Traditional Chinese Medicine, Beijing 100029, China.
authors.forename: Zhen-xi
authors.initials: ZX
authors.lastname: Yu
authors.forename: Yan
authors.initials: Y
authors.lastname: Bai
authors.forename: Zhi-Hong
authors.initials: ZH
authors.lastname: Chen
authors.forename: Yong
authors.initials: Y
authors.lastname: Jia
mesh_terms: D029044:Achyranthes / Q000737:chemistry*; D004355:Drug Stability; D004356:Drug Storage; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011786:Quality Control; D012984:Software; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods; D013696:Temperature; D013997:Time Factors