Abstract
Beer is one of the most consumed drinks around the world, containing a variety of compounds that offer both appreciated sensorial characteristics and health advantages. Important healthy compounds in beer are those with antioxidant properties that attenuate the content of free radicals produced as by-products in the human metabolism, exerting an appreciable effect against cancers or cardiovascular diseases. This work details a study of antioxidant compounds present in beer, focusing on the two main groups: phenols (including polyphenolic forms) and melanoidins, formed specifically during brewing as Maillard products. The fundaments of the most important methods to evaluate beer antioxidant activity, the main antioxidant compounds present in beer—especially those with healthy properties—and the new trends to increase beer antioxidant activity are also discussed.
Highlights
Beer, containing hundreds of different compounds, is one of the oldest, most consumed and popular drinks in the world
Studies have shown that the contribution to the antioxidant activity of beer from phenols is greater than 50% [47,48]
In view of the benefits that antioxidants provide to beer and to human health, the new trends try to increase the content of antioxidants, developing beers with new characteristics
Summary
Beer, containing hundreds of different compounds, is one of the oldest, most consumed and popular drinks in the world. The collective terms “reactive oxygen species (ROS) and reactive nitrogen species (RNS)” have been applied to a variety of free radicals such as superoxide, hydroxyl, peroxyl, nitric oxide, nitrogen dioxide radicals, as well as to non-radical reactive intermediates like hydrogen peroxide (H2O2) and peroxynitrite (ONOO−). These free radicals are currently produced under normal physiological conditions in our organism, but its generation is exacerbated under pathological conditions, and they play an important role in pathological processes and regulatory activities. Apolsloy,pthheentohlserwmiathl idneigtsrasdtrauticotnuroefafnedrudlieccarecaidseesthteeracosentaenndt orefltahtedseepnhzeynmoelisc, cwohmicphouanredsre[s1p5o].nAsilbsloe, ftohre tthheerrmelaeladseegorfadboatuionnd opfhfeenruolicsacfriodmescteerlal swe aalnlsd, mrelaaytepdroenmzoytme easn, wovheicrahllardeercerespasoensoifblpehfeonrotlhice arecildeassewoitfhboinucnrdeapsihnegnotlhiceskfrilonmingceltlemwaplelsr,amtuarey p[1r4o]m. oFteigaunreov2ersahlol wdescrsecahseemoaftpicheonvoelrivcieawcidosfwtihteh manufacturing process
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