2-Undecenal has a powerful, fresh aldehydic odor. The commercial product is a mixture of several isomers of undecylenic
aldehyde. This compound exhibits fungistatic activity.
Colorless or very pale straw-colored oily
liquid.
Insoluble in water, soluble in alcohol and
oils.
Reported found among the volatile components in fish products, also formed in the oxidative decomposition of
heated lard; its presence in nature has been reported in cranberry and bilberry, milk, cooked chicken, heated beef and pork, roasted
filberts, roasted peanuts, pecans, coriander seed and leaf, soybean, kiwifruit and potato chips.
GB 2760--1996 specifies 2-Undecenal as food flavorings that are temporarily permitted for use.
2-Undecenal can be produced by condensation of Acetaldehyde
with Nonanal. It can also be produced via
alphu-Bromo undecanoic acid.
ChEBI: 2-undecenal is an undecenal in which the C=C bond is located at the 2-3 position. It is an undecenal, a n-alk-2-enal and a volatile organic compound.
Taste characteristics at 15 ppm: waxy, addehydic, green, with a citrus and meaty nuance.
