Chemical Properties
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.
Physical properties
Colorless or very pale straw-colored oily
liquid.
Insoluble in water, soluble in alcohol and
oils.
Occurrence
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.
Uses
GB 2760--1996 specifies 2-Undecenal as food flavorings that are temporarily permitted for use.
Definition
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.
Preparation
By oxidation of 2-undecanol.
Taste threshold values
Taste characteristics at 15 ppm: waxy, addehydic, green, with a citrus and meaty nuance.
