Extending Shelf Life by Removing Oxidizing Metals

Extending Shelf Life by Removing Oxidizing Metals

The appearance of off-flavors and the decline of fresh flavor/aroma characteristics are often linked to oxygen and transition metal ions (e.g. iron, copper) present in packaged beers. In many oxidative reactions, radicals are formed as intermediates, reacting with beer components and greatly catalyzing beer deterioration. Iron and copper play a key role in the oxidative degradation of wort and beer, as they drive the formation of these radicals. In addition to reducing oxygen ingress throughout the brewing process, the chelation and removal of these transition metals has a major impact on the shelf life of your beer! We will discuss the chemistry behind this removal process and what brewing methods and products can be used to achieve better beer freshness for longer.


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Episoder(474)

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Creating and Funding Growth in a Challenging Market

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8 Des 202526min

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6 Des 202516min

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Oxygen is both a friend and a foe in the beer-making process. Used wisely, it sets the stage for strong fermentation. Used incorrectly—or introduced at the wrong time—it can compromise the flavor, she...

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