Fennel oils are obtained from two cultivars of Foeniculum vulgare Miller: sweet fennel or bitter fennel. The oil contains up to 90% trans-anethole and up to 20% fenchone and small amounts of limonene, α -pinene, camphor and additional volatile compounds.
Sweet fennel oil is colorless or pale yellow to greenish with a characteristic smell of anise, fresh and spicy. Bitter fennel oil is colorless to pale yellow with a sharp, warm-camphoraceous, herbaceous odor, initially earthy, later sweet, anisic and spicy.
The main use for fennel oil is as a food flavoring, in liquors where a liquorice or anise taste is important, and in industrial perfumery to mask the odour of aerosols, insecticides, disinfectants, etc.
Fennel oil
The Science and Art of Sour Cream Production
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