nootkatone

plural nootkatones

1. uncountableusuallychemistryAn aromatic organic compound that contributes to the smell and flavour of grapefruit, and is both a sesquiterpene and a ketone.

   A series of taste tests compared natural nootkatone with 2 synthetic nootkatones, one more highly purified than the other.

   1967, Canning Trade, Volume 89, Issue 1 − Volume 90, Issue 26, page 458

   4 more examples

   Significant differences, both in odor strength and in odor character, have been found between all enantiomeric pairs and are particularly large for the nootkatones.

   1973, Chemoreception Abstracts, volume 1, page 25

   One of the main flavor compounds in grapefruit is nootkatone, which is found in the fruit in very small amounts and is hard to extract.

   1999, Joe Schwarcz, Radar, Hula Hoops, and Playful Pigs, unnumbered page

   A constituent which corresponded to an unidentified GLC (gas-liquid chromatographic) peak in cold-pressed grapefruit oil was isolated and identified as nootkatone (figure 71).

   1972, Walton B. Sinclair, The Grapefruit: Its Composition, Physiology, and Products, page 252

   The sesquiterpene ketone, nootkatone, which gives the characteristic aroma to grapefruit, has the same skeleton as valencene, the major sesquiterpene of oranges (Macleod, 1965).

   2010, Milind Ladaniya, Citrus Fruit: Biology, Technology and Evaluation, page 176