Peel Volatile Compounds of Apple (Malus domestica) and Grapefruit (Citrus Paradisi)

The volatile compounds from peel of Malus demestica and Citrus paradisi obtained by hydrodistillation were identified by GC and GC-MS. The major constituents of the oil of M. demestica appeared to be α-phellandrene (20.6 %), α- pinene (17.4 %), β-pinene (17.1 %), and Mentha-1(7),8-diene (16.1 %) and the main compositions of C. paradisi were β-myrcene (28.7 %), δ-cadinene (21.0 %), β-ocimene (13.4 %) and limonene(6.6 %).