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Aliphatic Monoketones in Flavors

By: Michael Zviely, CIC
Posted: March 21, 2011, from the April 2011 issue of P&F magazine.

Ketones are responsible for many natural flavors and odors. Ketones exist in their precursor form in fresh butter as alkanoic acids. As acids, they may be only marginally important in contributing to the flavor of fresh butter. However, when heated, these acid precursors are converted to different ketones and their total concentration rises above their flavor threshold value. Thus, they are very important in providing flavors associated with heated or cooked foods containing butter. Aliphatic ketones are important flavor components, especially in blue cheeses; Penicillium roqueforti, for instance, produces 2-pentanone, 2-heptanone and 2-nonaone.

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