Just noticeable differences in component concentrations modify the odor quality of a blending mixture.
نویسندگان
چکیده
The odors we perceive are mainly the result of mixtures of odorants that, however, are commonly perceived as single undivided entities; nevertheless, the processes involved remain poorly explored. It has been recently reported that perceptual blending based on configural olfactory processing can cause odorant mixtures to give rise to an emergent odor not present in the components. The present study examined whether specific component proportions are required to elicit an emergent odor. Starting from the composition of a ternary target mixture in which an emergent pineapple odor was perceived, 4 concentration levels of each component were chosen to elicit just noticeable differences (JNDs). Each combination of levels was used to design sample mixtures. Fifteen subjects evaluated the intensity, typicality, and pleasantness of each sample mixture against the target mixture in a paired-comparison protocol. Statistical modeling showed that a variation of less than 1 JND in one of the components was sufficient to induce a significant decrease in pineapple odor typicality in the ternary mixture. This finding confirms previous findings on perceptual blending in simple odorant mixtures and underscores the human ability to discriminate between odor percepts induced by mixtures including very similar odorant proportions.
منابع مشابه
Perceptual processing strategy and exposure influence the perception of odor mixtures.
In flavor perception, both experience with the components of odor/taste mixtures and the cognitive strategy used to examine the interactions between the components influence the overall mixture perception. However, the effect of these factors on odor mixtures perception has never been studied. The present study aimed at evaluating whether 1) previous exposure to the odorants included in a mixtu...
متن کاملOdor interaction between Bourgeonal and its antagonist undecanal.
The perceived quality of a binary mixture will, as a rule of thumb, be dominated by the quality of the stronger unmixed component. On the other hand, there are mechanisms that, in theory, suggest that this will not always be true; one example being receptor antagonism. Undecanal has been indicated as an antagonist for bourgeonal-sensitive receptors in the human olfactory epithelium. Therefore, ...
متن کاملUse of Quantitative Descriptive Analysis and Principal Component Analysis for the Sensory Assessment and Analysis of Physicochemical Characteristics and Quality Stability of Kefir Made from Mahabadi and Alpine Hybrid Goat Milk
Background and Objectives: General acceptance of the goat milk products in Iran addresses needs of hybridization of this livestock with increasing characteristics of milk production and adaptation to various climates of Iran. The objectives of this study were to develop a kefir drink from Mahabadi and Alpine Hybrid (F1) and investigate its quality characteristics and sensory stability during pr...
متن کاملComplex mixture discrimination and the role of contaminants.
Rats were trained in a 2-alternative odor choice task to discriminate between a 10-component odor mixture and the same mixture with one component removed and replaced with 1 of 3 concentrations of a different monomolecular odor (contaminant). All stimuli were presented within a training session, thus the rat essentially had to learn to discriminate the 10-component mixture from "not" the 10-com...
متن کاملThe effect of breast milk odor on concentration percentage of oxygen saturation and respiratory rate in premature infants
Background: establishing a regular respiratory condition in the infants is one of the basic considerations in NICU. Newborns show noticeable breath alterations in response to even low concentrations of some fragrance. Aim: determining the effect of breast milk odor on oxygen saturation and respiratory rate in premature infants. Methods: In this four-group randomized clinical trial, 180 prematu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Chemical senses
دوره 33 4 شماره
صفحات -
تاریخ انتشار 2008