Methoxypyrazine

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A group of essential oils that have an earthy odour and taste of paprika, grass or gooseberries and are found in many plants. They also contribute to the earthy flavour of raw coffee. Derivatives are, for example, the two substances IBMP (2-isobutyl-3-methoxypyrazine) and IPMP (2-isopropyl-3-methoxypyrazine). IBMP is one of the most odour-intensive aromatic substances in wine; the odour perception threshold in red wine is only an incredible 10 to 15 billionths of a gram per litre. This substance is responsible for the paprika flavour (see under peppery). In contrast, the substance IPMP has a more earthy flavour and is reminiscent of cooked asparagus.

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Methoxypyrazine

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