Abstract: The essential oil sudachi was extracted from the peel by solvent extraction,and separated into fractions of hydrocarbon and oxygenated compounds through a silicagel columm.Both fractions were analyzed by combined capillary gas chromatography/mass spectrometry (GC/MS).Sixty-eight volatile compounds including 23 hydrocarbons,16 alcohols,16 aldehydes,2 esters,2 phenols,5 ethers,and 4 ketones,were identified by GC/MS and Retention Indices.

Key words: Sudacih Volatile compound GC/MS analysis