Volatile Constituents of Turkish Orange (Citrus sinensis (L.) Osbeck) Peel Oils

Abstract The compositions of Turkish sweet orange (Citrus cinensis (L.) Osbeck) peel oil samples have been investigated byhigh-resolution gas chromatograph (HRGC) and high-resolution gas chromatography mass spectrometer (HRGC-MS). The orange oils were extracted by the cold-pressing method. In total, 54 components have been identified in orange oil samples. The major monoterpenes of the orange oils were found limonene (91.14 - 92.02 %), myrcene (1.30 - 1.36 %), sabinene (0.95 - 0.98 %) and α-pinene (0.88 - 0.95 %). The major sesquiterpene component was β-caryophyllene (0.05 - 0.07 %). The major oxygenated components of the oils were found; aldehyde components; octanal (1.38 - 1.42 %), decanal (0.23 - 0.28 %) and geranial (0.13 - 0.18 %), alcohol components; linalool (0.37 - 0.39 %), and nerol (0.05 - 0.06 %) and ester components; geranyl acetate (0.06 - 0.09 %) and neryl acetate (0.05 - 0.06 %).