title: Determination of volatile compounds in turbot (Psetta maxima) during refrigerated storage by headspace solid-phase microextraction and gas chromatography-mass spectrometry.
abstract: BACKGROUND
  A procedure based on headspace solid phase microextraction (HS-SPME) and gas chromatography-mass spectrometry (GC-MS)was developed for the study of the volatile profile characteristics of turbot during refrigerated storage at 4°C for 20 days in order to find possible markers of freshness or spoilage.
  
  
  RESULTS
  A total of 61 volatile compounds including aldehydes, ketones, esters, alcohols, alkenes, alkanes, aromatics, amines and others were identified in turbot muscle extracted by the optimised HS-SPME method. The volatile profile characteristics of turbot at different storage periods were specified by principal component analysis (PCA). The concentrations of hexanal, heptanal, (2E,4E)-heptadienal, acetophenone, 2-undecanone and 1-octen-3-ol decreased during storage, whereas benzene acetaldehyde, 6-methyl-5-hepten-2-one, 2-nonanone, acetic acid butyl ester, 3-methyl-1-butanol and trimethylamine increased.
  
  
  CONCLUSIONS
  SPME-GC-MS combined with PCA may be a useful method for monitoring the volatile profile characteristics of turbot during storage, which could be potentially used for freshness evaluation.
authors.forename: Yongxia
authors.initials: Y
authors.lastname: Xu
authors.forename: Ying
authors.initials: Y
authors.lastname: Liu
authors.forename: Chengcheng
authors.initials: C
authors.lastname: Jiang
authors.forename: Chaomin
authors.initials: C
authors.lastname: Zhang
authors.forename: Xuepeng
authors.initials: X
authors.lastname: Li
authors.forename: Danshi
authors.initials: D
authors.lastname: Zhu
authors.forename: Jianrong
authors.initials: J
authors.lastname: Li
mesh_terms: D000818:Animals; D003080:Cold Temperature; D005412:Flatfishes; D061353:Food Storage; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D025341:Principal Component Analysis; D012034:Refrigeration; D017747:Seafood / Q000032:analysis*; D052617:Solid Phase Microextraction / Q000379:methods*; D055549:Volatile Organic Compounds / Q000032:analysis*
chemical_list: D055549:Volatile Organic Compounds