Citrus Essential Oil of Nigeria Part V: Volatile Constituents of Sweet Orange Leaf Oil ( Citrus sinensis )

Abstract

The volatile oils extracted from leaves of eight cultivars of Citrus sinensis (L) Osbeck were comprehensively analysed by a combination of GC and GC-MS. Fifty four constituents accounting for 82.3-98.2% were identified. Sabinene (20.9-49.1%), δ-3-carene (0.3-14.3%), (E)-β-ocimene (4.4-12.6%), linalool (3.7-11.1%) and terpinen-4-ol (1.7-12.5%) were the major constituents that are common to all the volatile oils. In addition, a cluster analysis was carried out and indicated at least four different chemotypes for the C. sinensis cultivars.

Keywords

Citrus sinensis Rutaceae;essential oil composition sabinene δ-3-carene linalool terpinen-4-ol

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