What are the major classes of aromatic compounds in beer?
humulene from hops Oxidation Products: caryolan-1-ol caryophyllene oxide humulene diepoxide a humulene diepoxide b humulene diepoxide c humulene epoxide I humulene epoxide II humulene epoxide III humulenol II humulol Floral/Estery Compounds: geraniol geranyl acetate geranyl isobutyrate linalool Citrus/Piney Compounds: delta-cadinene gamma-cadinene citral limonene limonene-10-ol alpha-muurolene nerol beta-selenene Norm Pyle & George Fix Many Esters isoamyl alcohol-isoamyl acetate fusel alcohols iso-amyl acetate