In earlier studies on bullfrogs, other researchers found that some compounds, so-called high-sorption odorants
, zing through that membrane quickly, but others only creep.
Even now, the perfume and food industries rely heavily on "professional noses," people who sniff odorants
for a living.
Results indicated that losses in major odorants
, as well as the formation of methional from its precursor methionine during juice processing, accounted for the development of a cooked-like off-flavor in the industrially manufactured pineapple juice.
The team also clarified aspects of the second major theory of olfaction, termed the "shape theory of olfaction", which suggests that steric aspects of odorants
are central in the so-called "hand-in-glove" or "lock and key" interaction of odors with odorant
Objective: The aim of the project ~OdourCOB Odour Characterisation of Odorants
from Biosolids~ is to identify the major contributing odorants
produced from wastewater biosolids to odour annoyance.
The researchers found that the almost unlimited variety of food smells is based on 230 key odorants
and each foodstuff has its own odor code comprised of a core group of between just 3 and 40 of the 230 key odorants
, in specific concentrations, so these small groups of odorous substances are what give all kinds of foodstuffs from pineapple to wine to roast meat their unmistakable aromas.
From there, they extrapolated how many different scents the average person would be able to discriminate if they were presented with all the possible mixtures that could be made from their 128 odorants
Pipeline companies check for the presence of odorants
by gathering sniff test data.
CeEt, pourtant, le [beaucoup moins que]grossiste-detaillant[beaucoup plus grand que], ca existe chez nous, de la rue de Chartres, ne s'en plaint pas par le rush pour les produits odorants
General topic areas include: historical aspects, structure-odor relationships, odorants
from natural and petrochemical sources, essential oils, odorants
of animal origin and ionones, damascones, and Iso E Super.
The situation with mixtures of odorants
is even more complex and interesting.
In the new study, Ayumi Nagashima and Kazushige Touhara of the University of Tokyo added odorants
to tiny amounts of mucus sucked out of a mouse's nose and tested the resulting chemical composition of the mix.