Aroxa™ 2,3-butanedione (Cara Technologies)

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Aroxa™ 2,3-butanedione
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“Diacetyl, like butter, or butter popcorn”

Certified beer flavor standard used to train professional beer tasters to recognize and scale the intensity of diacetyl character. 2,3-Butanedione is an off-flavor formed in beer either from the activities of brewer’s yeast or by contaminant lactic acid bacteria.