(5/,7,9)-Decatrien-2-ones, Pineapple-like Flavors from -Structure Elucidation and Sensorial Properties.

During the cultivation of the edible mushroom on agro-industrial side streams, a pleasant flavor strongly reminiscent of pineapple was perceived. Aroma extract dilution analyses identified two flavor components with a distinct pineapple odor. On the basis of mass spectrometric data, a Wittig reaction of ()-penta-2,4-dien-1-yltriphosphonium bromide with ethyl levulinate was conducted.