Pyrazine is a heterocyclic aromatic compound and its derivatives are often used as flavoring agents in food. It is most commonly found in coffee and peanut butter. As one of nearly 800 compounds that affect coffee’s aroma, pyrazine is responsible for its bitterness, and in peanut butter, it accounts for the roasted or earthy flavor. Pyrazine is water soluble and its color ranges from clear to pale yellow with a taste threshold of only 1 mg/L. It is a highly flammable irritant, but it poses no safety concern at the levels found in our food.
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Common molecules
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Obtained courtesy of the Cambridge Structural Database
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