Comparison of volatile components of Lateolabrax japonicus ( Cuvier et Valencinnes) cultured in sea water and freshwater

Comparison of volatile components were made in pre-and post-heated dorsal muscle of fish cultured in freshwater and sea water through HS- SPME and GC- MS techniques. The results showed that of the total determined 40 volatile components of 6 kinds were mainly alkanes and aldehydes.Aldehydes ( mainly hexanal and pelargon aldehyde) were the most abundant in the volatile components of Lateolabrax japonicus, and others included aromatic compounds ( mainly p- xylene) and alcohols ( mainly 1- Octen- 3- ol) . All these three sorts of chemicals were the charateristics volatile components of L. japonicus. Hexanal and p- xylene contents of post-heated freshwater fish were significantly higher than those of the seawater fish.