38 – E-2-nonenal and β-Damascenone in Beer

摘要: One of the main concerns among brewers is to maintain organoleptic stability stored beer. This objective has prompted a series scientific studies, which have given better knowledge all brewing procedures. Nowadays, comprehension beer-ageing phenomenon and know-how increase packaged beers. E-2-nonenal (also called trans-2-nonenal), compound with an extremely low taste threshold (0.1 μg/l), widely recognized as major cause for development typical unpleasant cardboard flavor in aged beers. Recently, β-damascenone concentration during beer ageing was discovered. These two compounds were proposed analytical markers characterization. However, at levels found beer, there no evidence that E-2-nonenal could effects, adverse or beneficial, on human health. In this chapter, formation determination these carbonyl are reviewed.