Oil yield and aroma component analysis of Anning Dianhong rose and purple rose essential oil

The essential oil of Dianhong rose and purple rose which planted in Anning city were obtained through steam distillation, with yield of 0.125‰ and 1.85‰.The physical properties of the two rose essential oils were basically the same.93 compositions were identified using gas chromatography-mass spectro-metry ( GC-MS) from Dianhong rose essential oil, and 65 compositions were identified using gas chromatography-mass spectrometry ( GC-MS) from purple rose essential oil.The content of each component in Dianhong rose was from high to low: alkanes > phenols > esters > alkenes > alcohols > ketones > acids.The content of each component in Purple rose is from high to low: alkanes > alcohols > aldehydes > alkenes > esters > ketones >acids.Alkanes is the main components in essential oil of purple rose ( 47.600%) and dianhong rose ( 80.083%) . Dianhong rose has high content of methyl eugenol ( 18.584%) , it as the food add spices has good application value and potential.