Sunday beer thoughts…… I recently had the honor of judging a few styles of IPA for a statewide competition. Many of the beers were very good but a few stood out for the brightness and freshness of their hop aroma. I suspect that those examples were packaged week with low oxygen pickup.
Hop aromatics are very sensitive to oxidation. The included slide shows the huge impact of a slight increase in oxygen levels in hoppy beer styles. Packaging these beer styles is very challenging. It is akin to capturing lighting in a bottle (or can these days). The increase of 151ppb oxygen pickup resulted in a more than 73% reduction on hop aromatics for the selected hop aromatics.
Reducing oxygen pickup during beer packaging is crucial for preserving the delicate hop aromatics that give beer its unique and complex flavors. Hop aromatics are the volatile compounds that contribute to the aroma and taste of beer, and they are particularly sensitive to oxidation. When exposed to oxygen, these compounds can quickly break down, resulting in a loss of flavor and aroma. This can lead to a beer that tastes flat or stale, with muted hop flavors and aromas.
To preserve hop aromatics, brewers take several measures during the packaging process. They may use oxygen scavengers or purge bottles and cans with inert gases to reduce oxygen levels. They also carefully monitor and control the temperature and pressure during the filling process to minimize exposure to oxygen. By reducing oxygen pickup during the packaging process, brewers can ensure that their beer retains its fresh and complex hop aromatics, providing a more enjoyable drinking experience for consumers.
Go make (and package) great beer!
