52 research outputs found
Les préférences hédoniques et leur variabilité
Plan de la prĂ©sentation : 1. Peutâon allĂ©ger en gras les produits du commerce sans perte de prĂ©fĂ©rences ?2. Le gras indissociable du sucre dans lâunivers des biscuits 3. Un outil pour la mesure de la sensation de gras perçue applicable Ă tout le rĂ©pertoire alimentaire4. Un questionnaire pour la mesure de la prĂ©fĂ©rence visâĂ âvis du gras5. Un outil dâanalyse sensorielle pour la mesure de la prĂ©fĂ©rence visâĂ âvis du gra
MĂ©thodes d'acquisition, de codage et d'analyse de profils sensoriels temporels
National audienceLa mĂ©thode de Temps-IntensitĂ© (TI) consiste Ă mesurer lâĂ©volution de la perception de lâintensitĂ© dâun descripteur au fil du temps de la dĂ©gustation dâun produit. Lorsque plusieurs descripteurs sont Ă©tudiĂ©s (situation du profil sensoriel), cette mĂ©thode devient quasiment impraticable car elle nĂ©cessite une dĂ©gustation par descripteur. Cette communication se propose de synthĂ©tiser un ensemble de travaux visant Ă proposer des mĂ©thodes dâobtention de courbes des Ă©volutions temporelles de plusieurs descripteurs simultanĂ©ment. La premiĂšre de ces mĂ©thodes, Dominance Temporelle des Sensations (DTS) [1], a permis de restituer assez fidĂšlement les courbes TI de 10 descripteurs pour 5 produits laitiers. Dâautre part, sur la base de plusieurs Ă©tudes portant sur des produits de natures variĂ©es, la mĂ©thode DTS sâest Ă©galement avĂ©rĂ©e capable de restituer lâessentiel de la carte sensorielle obtenue par un profil classique. Le codage des donnĂ©es et leur traitement statistique qui ont permis dâaboutir Ă cette conclusion seront rappelĂ©s [2]. Une seconde mĂ©thode, IndĂ©pendant Temps IntensitĂ© Profil (ITIP), a Ă©tĂ© Ă©laborĂ©e pour pallier certaines limites du DTS qui seront discutĂ©es. Les mĂ©thodes DTS et ITIP sont comparĂ©es sur la base de deux Ă©tudes. La premiĂšre porte sur des chewing-gums expĂ©rimentaux comportant des arĂŽmes encapsulĂ©s de diffĂ©rentes maniĂšres afin de contrĂŽler la temporalitĂ© du signal sensoriel. La seconde porte sur des produits laitiers et permet de comparer DTS et ITIP entre eux, mais aussi de comparer ces profils temporels au profil classique
Sensory acceptability of new plant protein meat substitutes
International audienceConsumers have been encouraged to reduce their consumption of meat for health and environmental reasons. A possible way is to substitute meat with plant protein alternatives; however, consumer acceptance of these products is far from settled, which might be due to taste. Therefore, it is important to identify sensory attributes that should be optimized to improve palatability. This paper is based on two consumer tests. In the first experiment, three recipes, each prepared with two or three different plant protein meat substitutes and with meat, were compared by 91 consumers using a liking scale and Check-All-That-Apply characterizations. An optimized variant of one of the meat substitutes was then produced by adding a flavor. During the second experiment, this new variant was prepared by following a single recipe and was tested by 69 consumers against a meat and two other plant protein meat substitutes from the market. Unlike in the first experiment, the consumers evaluated a full portion of each product during four different meals. They performed multiple-intake Temporal Dominance of Sensations (TDS) measurements, alternating with liking scales. The TDS evaluations also alternated texture measurements and flavor measurements over the intakes. Regarding both experiments, the meat was generally preferred; however, one plant protein meat substitute was truly appreciated, even more than the meat. Acceptance of the plant protein products depended on their composition and on the recipe. Sensory interpretations of these liking differences were proposed, and sensory drivers of liking were highlighted, which could lead to better acceptance of the products
Temporal dominance of sensations : a new technique to record several sensory attributes simultaneously over time
National audienc
Relating dimensions of perceived complexity to aroma profiles in Burgundy Truffles (<em>Tuber uncinatum</em>)
International audienc
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