Analysis Chemical Composition of Volatile Components before and after Ethanol Extracting of Brazilian Green Propolis

Abstract:

In this study,ethanol extract and dregs were prepared by ethanol extracting of Brazilian green propolis.Then ultrasonic assistant extraction technology was used to obtain volatile components from raw material,PEES and DPEES.The chemical components were separated and identified by gas chromatography-mass spectrometry(GC-MS).14 active ingredients were identified from Brazilian propolis volatile components and the major components were aromatic compound and ene terpenoids,14 and 11 active ingredients were identified from PEES and DPEES volatile components,the major components were ene terpenoids and organic acid esters,but the main volatile substances in the PEES also contains alkanes.The results revealed that there are some same volatile components as well as some different ones among raw material PEES and DPEES,but their contents is obviously different,meanwhile some active ingredients can transformed between each other.