Research Sponsored by
Psychologist's Corner. During the past 25 years a new form of sensory evaluation--magnitude estimation--has become very popular among research scientists in a number of different fields. The premise and forte of magnitude estimation is that people are able to assess sensory intensity by numerical means. Furthermore, the magnitude estimation method allows the participant an opportunity to use a wide range of numbers, with the property that ratios or proportions among the numerical assignments reflect ratios of sensory intensities.
If you have engaged in odor testing sessions, you know how exhausted you feel after half an hour of concentrated effort. Working near the threshold level is very difficult indeed. There can be agonies of indecision. I have always told my observers that it is their first snap impression that counts and is usually right. The chemical senses in our bodies are wonderfully designed and will come out with “I can smell it” or “l can’t smell it” instantaneously.
Our research effort continues with other fluorocarbon compounds, which may offer better end use performance and economic characteristics than those provided by FC-22 and FC142b. The goal is to find propellants that present the greatest consumer advantages should circumstances dictate the replacement of the propellants presently used.
We should all realize that the new Toxic Substances Control Act, which Congress is about to pass, will increase considerably the cost of developing new aroma chemicals. The new law may reduce the number of such chemicals drastically. Closer cooperation between the fragrance and the aroma chemical industries will now be even more important in order to maintain a healthy level of innovation in areas of mutual interest.
When one considers the long history of the use of fragrances, their broad distribution, and the extent of exposure to them, one is impressed with the very few examples of injury to humans that can be attributed to these materials, The only problems reported have been occasional rashes on the skin, and even more specificalIy, light-induced rashes. And yet there is a persistent myth in the cosmetic industry that any problem encountered in the safety testing of a new cosmetic must be attributable to the fragrance component. Only systematic screening of all of the materials used in fragrances by an independent scientic body, and systematic and voluntary conscientious response by the industry to eliminate ingredients shown to cause harm can dispel this myth.
The factors relating changes in human physiology to human preference are admittedly complex and still not well understood. However, with our present tools it is possible not only to begin to understand the complex interrelationships between olfactory and gonadal function but also to harness these relationships in order to create a more harmonious blend of esthetics and physiology by which the quality and odor of life may be enhanced for us all.
Thus this work suggests that, from this data set, the human odor sensory spectrum can be. explained by the existence of a two-dimensional continuum with the coordinates (odor) of a molecule determined by its directed dipole and electron donor-acceptor ability. This result is pleasantly straightforward and makes a trained expert’s ability to distinguish thousands of different odors reasonable.
Sweaty and panting, you got a great workout at the gym. You hit the showers, towel off and grab your toiletries. With deodorant and hair gel set, you peel the backing off a patch and apply—wait, perfume? That's the vision behind this patent.
Volkswagen is getting its emissions act in order. On that "note," it's time the fragrance industry does the same. According to this patent, there's a better way for emanation devices to release air freshener, insect repellent, sanitizers and more to our surroundings.
Is this a new aroma superhero? With a description like "high-impact and fresh character," as this Firmenich patent states, it may be; perhaps in "Scent City." At least Firmenich hopes so.