Among the other substances in the oil of Irises were neophytadiene, eugenol, [alpha]-terpineol, germacrene D, terpinen-4-ol, hexahydrofarnesylacetone, farnesylacetone,
phenylacetaldehyde, geranilasetone, 2-methoxy-4-vinylphenol.
The compounds benzaldehyde,
phenylacetaldehyde and ethylester L-isoleucine were present in hydrolyzed protein and treatments containing yeast extract, suggesting a possible relationship of these compounds with the attractiveness of the treatments.
Heider, "Simultaneous involvement of a tungsten-containing aldehyde:ferredoxin oxidoreductase and a
phenylacetaldehyde dehydrogenase in anaerobic phenylalanine metabolism," Journal of Bacteriology, vol.
In particular, 2-methylbutanal, 3-methylbutanal, methional, and
phenylacetaldehyde arise from Strecker degradation products which occur by a transamination between [alpha]-dicarbonyl products and amino acids.
The main aldehydes identified included
phenylacetaldehyde, 2-methylbutyraldehyde, 5-methyl furfural, and nonylaldehyde.
AEDA found that acetaldehyde, 2-methylpropanal, 2-methylbutanal, 3-methylbutanal, acetic, butanoic, hexanoic, octanoic, and decanoic acids, ethyl butanoate, ethyl hexanoate, dimethyl trisulfide, methional and
phenylacetaldehyde had high FD values.
ALDH inhibition causes the accumulation of 3,4-dihydroxy
phenylacetaldehyde (DOPAL) in DA neurons, which is toxic (Burke et al.
Five aldehydes were identified among the compounds: n-hexanal,
phenylacetaldehyde, n-nonanal, (E)-non-2-enal and decanal, the last three being found in all species of Aechmea analyzed.
Found amid nerve cells that spur reproductive activity in fruit flies, the protein is primarily stimulated by two aromas, phenylacetic acid and
phenylacetaldehyde. Strangely, these aphrodisiacal odors are given off not by female flies, but by the fruit and plant tissues the flies eat and use for laying eggs.
Opdyke (1976) reported that three aldehydes (cinnamic aldehyde,
phenylacetaldehyde and citral) were shown to be sensitizers in a human maximization test; however, essential oils that contain significant amounts of each material did not induce sensitization [25].