Gas Chromatography/Mass Spectrometry for Separation and Identification of Cold-Pressed Compounds in Grapefruit Essential Oils from Iran

Abstract

The grape fruits, (Citrus paradisi macfad.), were collected in December from Jiroft, Kerman province (eastern south of Iran). The essential oils after cold-press were analyzed by gas chromatography/mass spectometry. Twenty-seven compounds present in the non-volatile residue of the essential oils of grape fruit were analyzed by a gas chromatography/mass spectrometry. Use of hyphenated techniques, such as gas chromatography/mass spectometry provides great information about the content and nature of constituents of natural complex matrices, such as essential oils. The different responses of the identified compounds have been also evaluated and the Quvats index of these components was compared with the standard samples. This method is used to confirm the identified components of essential oils. Limonene was the main constituents of the essential oils (95 %). Some new compounds were found, together with many others already identified in different grape fruit essential oils.