title: Quality evaluation of mycelial Antrodia camphorata using high-performance liquid chromatography (HPLC) coupled with diode array detector and mass spectrometry (DAD-MS).
abstract: BACKGROUND
  Antrodia camphorata (AC) is an important fungus native to Taiwanese forested regions. Scientific studies have demonstrated that extracts of AC possess a variety of pharmacological functions. This study aims to identify the full profile fingerprint of nucleosides and nucleobases in mycelial AC and to assess the quality of two commercial mycelial AC products.
  
  
  METHODS
  High-performance liquid chromatography coupled with diode array detector and mass spectrometry was employed to identify the major components in mycelial AC. The chemical separation was carried out using a gradient program on a reverse phase Alltima C18 AQ analytical column (250 x 4.6 mm, 5 microm) with the mobile phase consisting of deionized water and methanol.
  
  
  RESULTS
  Ten nucleosides and nucleobases, two maleimide derivatives, and a sterol were identified as the major constituents in mycelial AC. These groups of chemical compounds constitute the first chromatographic fingerprint as an index for quality assessment of this medicinal fungus.
  
  
  CONCLUSIONS
  This study provides the first chromatographic fingerprint to assess the quality of mycelial AC.
authors.affiliation: Department of Chemistry, Hong Kong Baptist University, Kowloon, Hong Kong SAR, China.
authors.forename: Sandy Shuo
authors.initials: SS
authors.lastname: Zhao
authors.forename: Kelvin Sze-Yin
authors.initials: KS
authors.lastname: Leung