Farnesol and Farnesene
Farnesol is a natural 15-carbon organic compound which is an acyclic sesquiterpene alcohol. Under standard conditions, it is a colorless liquid. It is hydrophobic, and thus insoluble in water, but miscible with oils. Farnesol is produced from 5-carbon isoprene 
Filbertone
FilbertoneĀ is the principal flavor compound ofĀ hazelnuts.Ā It is used in perfumery and is designated asĀ generally recognized as safeĀ (GRAS) for use in foods. Because filbertone is found inĀ hazelnut oil, its presence can be used to detect the adulteration ofĀ olive oilĀ with less expensive hazel