A dry, bitter aromatic note reminiscent of tonic water and cinchona bark. Astringent and slightly medicinal with a cool herbal edge, useful as a bitter counterpoint to sweet or citrus accords.AI · claude-opus-4-7
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Perfume and Flavor Chemicals, page 1224.
Dull, needlelike, bulky crystals, colorless or white, but turning brownish upon exposure to air.
Soluble in water, 0.14% in boiling water, soluble in alcohol and oils, but poorly soluble in most hydrocarbons.
Practically odorless.
Intensely, but very clean, bitter taste. The bitterness is perceptible at concentrations down to 5 or 2 ppm, but this minimum perceptible level is highly subjective. The highest pleasant level is near 100 ppm, depending very much upon the acidity accompanying the Quinine bitterness. Without accompanying acid, the pleasant level is much lower.
Quinine (alkaloid) is rarely used as such in flavors, but several of its salts are used in flavors and beverages as an additive. The word 'Quinine' is commonly used to cover the use of one or another salt of the alkaloid.
Produced by extraction from the bark of Cinchona officinalis (commonly known as 'Ledgeriana-bark' or 'Cinchona bark') in which the alkaloid is present at the rate of up to 8%.