Essential Oils Extracted from Orange Peel by Steam Distillation and Supercritical CO₂ Extraction and Their Application in Cigarette Flavoring

Essential oils extracted from orange peel by supercritical CO₂ extraction and steam distillation were determined by GC/MS and applied as cigarette flavoring separately. The results showed that: 1) The yield of essential oil from supercritical CO₂ extraction was 0.67%, and 76 aroma components, including D-limonene (91.88%), γ-terpinene (2.23%), β-myrcene (1.59%), and α-pinene (0.89%), were detected in the oil. 2) The yield of essential oil extracted by steam distillation was 0.29%, and 27 aroma components, including D-limonene (84.05%), D-limonene oxide (2.23%), β-myrcene (0.88%), α-pinene (0.85%), were identified in the oil. 3) The oil from supercritical CO₂ extraction was better than that from steam distillation in improving aroma abundance and aroma quality of cigarette.