20 research outputs found
The impact of sugar and fat reduction on perception and liking of biscuits
Reducing the fat and/or sugar content in biscuits can be a way to improve their nutritional composition. Seventy-nine consumers of biscuits were recruited to study the impact of these reductions on liking and perception. Four categories of products were selected from a wide range of biscuits available at the French market. Three to six variants of each type of biscuit were produced based on reduced content of sugar, fat or both. Consumers tested the samples under laboratory conditions (6 sessions), recording their liking during initial sessions and crispiness, sweetness and fat perception during latter sessions. Sugar-reduced biscuits were perceived as less sweet than standard biscuits at low reduction levels, whereas fat-reduced biscuits were perceived as less fatty than standard biscuits at higher reduction levels (except for one biscuit among the three biscuits studied). A reduction in the sugar content had no effect on perception of fat, whereas a reduction in the fat content sometimes induced a reduced sweetness perception. For most of the biscuits studied, the least appreciated variants were those perceived as (1) less sweet, (2) less sweet and less fatty or (3) less sweet and less crispy than standard biscuits. Moreover, the variants only perceived as less fatty were not significantly disliked. These results suggest that from a sensory point of view, it is more acceptable to reduce the fat than the sugar content in biscuits, at least when products are not perceived as being less sweet
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
Is the improvement of the nutritional quality compatible with the maintenance of the sensory quality? : the example of biscuits
Plusieurs fabricants de biscuits et gĂąteaux français se sont engagĂ©s Ă mettre sur le marchĂ© des produits de meilleure qualitĂ© nutritionnelle. Ce travail de thĂšse a eu pour objectif de dĂ©terminer si cette amĂ©lioration de la qualitĂ© nutritionnelle Ă©tait compatible avec le maintien de la qualitĂ© sensorielle. La premiĂšre Ă©tude portait sur lâimpact des rĂ©ductions en lipides et/ou en sucres sur lâapprĂ©ciation et la perception sensorielle de neuf catĂ©gories de biscuits et gĂąteaux. Les rĂ©sultats montrent que les enfants perçoivent peu de diffĂ©rences et apprĂ©cient gĂ©nĂ©ralement autant les variantes rĂ©duites que les variantes standards. Pour les produits rĂ©duits sans ajout de polyols, les adultes dĂ©prĂ©cient principalement les variantes qui sont perçues moins sucrĂ©es et parfois Ă©galement moins grasses et/ou diffĂ©rentes dâun point de vue textural. De plus, les rĂ©ductions en sucres sont plus perceptibles que les rĂ©ductions en lipides et Ă taux de rĂ©duction proches, les produits rĂ©duits en lipides sont moins dĂ©prĂ©ciĂ©s que ceux rĂ©duits en sucres. Les produits rĂ©duits avec ajout de polyols ne sont pas dĂ©prĂ©ciĂ©s et ne sont pas tous perçus moins sucrĂ©s.La deuxiĂšme Ă©tude sâest intĂ©ressĂ©e Ă deux leviers pour faire mieux accepter les produits rĂ©duits en lipides ou sucres. En exposant quasi-quotidiennement des consommateurs Ă des biscuits rĂ©duits dâenviron 30 % en lipides ou en sucres, lâapprĂ©ciation de ces produits augmente aprĂšs un mois, mais davantage pour les lipides. En revanche, une exposition progressive ne montre pas dâeffet sur un mois. Par ailleurs, une allĂ©gation nutritionnelle indiquant une rĂ©duction ne semble pas ĂȘtre un levier pour lâapprĂ©ciation de biscuits et gĂąteaux rĂ©duits en lipides ou sucresFrench biscuit producers are willing to improve the nutritional composition of their products. The objective of this work was to determine whether it was possible while maintaining the sensory quality of the reduced product.The first study dealt with the impact of fat and sugar reduction on liking and sensory perception of 9 types of biscuits and cakes. Results show that children perceived almost no difference and liked equally the standard and the fat- and/or sugar-reduced variants for most types of biscuits. For products reduced without adding polyols, adults less liked fat- or sugar-reduced variants than standard ones mainly when they were perceived as less sweet, and to a lesser extent as less fatty and/or as different in terms of textural aspects. Furthermore, a reduction in fat content was more difficult to perceive than a reduction in sugar content. With similar levels of reduction, fat-reduced products were less disliked than sugar-reduced ones. Sugar-reduced biscuits with an addition of polyols were not disliked and some of them were not perceived as less sweet than standard biscuits.The second study was about two strategies to promote consumer acceptance for fat- or sugar-reduced products. On the one hand, some consumers were exposed almost daily to -30 % fat- or sugar-reduced biscuits. After a month of exposure, reduced variants were more appreciated than before exposure, but it was more significant for fat reduction. On the other hand, no difference of liking was observed after a month of stepwise exposure. Besides, a nutritional claim indicating the fat or sugar reduction does not seem to be efficient to increase liking for fat- or sugar-reduced biscuits and cake
L'amélioration de la qualité nutritionnelle est-elle compatible avec le maintien de la qualité sensorielle ? : l'exemple des biscuits
French biscuit producers are willing to improve the nutritional composition of their products. The objective of this work was to determine whether it was possible while maintaining the sensory quality of the reduced product.The first study dealt with the impact of fat and sugar reduction on liking and sensory perception of 9 types of biscuits and cakes. Results show that children perceived almost no difference and liked equally the standard and the fat- and/or sugar-reduced variants for most types of biscuits. For products reduced without adding polyols, adults less liked fat- or sugar-reduced variants than standard ones mainly when they were perceived as less sweet, and to a lesser extent as less fatty and/or as different in terms of textural aspects. Furthermore, a reduction in fat content was more difficult to perceive than a reduction in sugar content. With similar levels of reduction, fat-reduced products were less disliked than sugar-reduced ones. Sugar-reduced biscuits with an addition of polyols were not disliked and some of them were not perceived as less sweet than standard biscuits.The second study was about two strategies to promote consumer acceptance for fat- or sugar-reduced products. On the one hand, some consumers were exposed almost daily to -30 % fat- or sugar-reduced biscuits. After a month of exposure, reduced variants were more appreciated than before exposure, but it was more significant for fat reduction. On the other hand, no difference of liking was observed after a month of stepwise exposure. Besides, a nutritional claim indicating the fat or sugar reduction does not seem to be efficient to increase liking for fat- or sugar-reduced biscuits and cakesPlusieurs fabricants de biscuits et gĂąteaux français se sont engagĂ©s Ă mettre sur le marchĂ© des produits de meilleure qualitĂ© nutritionnelle. Ce travail de thĂšse a eu pour objectif de dĂ©terminer si cette amĂ©lioration de la qualitĂ© nutritionnelle Ă©tait compatible avec le maintien de la qualitĂ© sensorielle. La premiĂšre Ă©tude portait sur lâimpact des rĂ©ductions en lipides et/ou en sucres sur lâapprĂ©ciation et la perception sensorielle de neuf catĂ©gories de biscuits et gĂąteaux. Les rĂ©sultats montrent que les enfants perçoivent peu de diffĂ©rences et apprĂ©cient gĂ©nĂ©ralement autant les variantes rĂ©duites que les variantes standards. Pour les produits rĂ©duits sans ajout de polyols, les adultes dĂ©prĂ©cient principalement les variantes qui sont perçues moins sucrĂ©es et parfois Ă©galement moins grasses et/ou diffĂ©rentes dâun point de vue textural. De plus, les rĂ©ductions en sucres sont plus perceptibles que les rĂ©ductions en lipides et Ă taux de rĂ©duction proches, les produits rĂ©duits en lipides sont moins dĂ©prĂ©ciĂ©s que ceux rĂ©duits en sucres. Les produits rĂ©duits avec ajout de polyols ne sont pas dĂ©prĂ©ciĂ©s et ne sont pas tous perçus moins sucrĂ©s.La deuxiĂšme Ă©tude sâest intĂ©ressĂ©e Ă deux leviers pour faire mieux accepter les produits rĂ©duits en lipides ou sucres. En exposant quasi-quotidiennement des consommateurs Ă des biscuits rĂ©duits dâenviron 30 % en lipides ou en sucres, lâapprĂ©ciation de ces produits augmente aprĂšs un mois, mais davantage pour les lipides. En revanche, une exposition progressive ne montre pas dâeffet sur un mois. Par ailleurs, une allĂ©gation nutritionnelle indiquant une rĂ©duction ne semble pas ĂȘtre un levier pour lâapprĂ©ciation de biscuits et gĂąteaux rĂ©duits en lipides ou sucre
Amélioration nutritionnelle : le goût, critÚre indépassable
Article en rapport avec la thĂšse de Coralie Biguzzi, rĂ©alisĂ©e au sein de la plate-forme ChemoSens du Centre des Sciences du GoĂ»t Ă Dijon, en collaboration avec Oqali (Observatoire de la QualitĂ© de lâAlimentation)National audienceETUDE. LâInra en lien avec lâinterprofession des biscuits et gĂąteaux a montrĂ© quâun seuil organoleptique limite lâamĂ©lioration de la qualitĂ© nutritionnelle
Perception sensorielle et appréciation de biscuits réduits en lipides et en sucres
Poster ; http://www.qualiment.fr
Effect of sensory exposure on liking for fat- or sugar-reduced biscuits
This study investigates the effect of exposure to fat- or sugar-reduced biscuits on liking for these products. Two sets of biscuits were manufactured, each including a standard variant and 4 variants differing by the level of reduction of either fat or sugar content, to 33% of fat content or 28% of sugar content. Biscuit consumers were recruited to eat either the fat (n ÂŒ 113) or the sugar-reduced set of biscuits (n ÂŒ 106). They participated in 5 testing sessions, once a week, in laboratory conditions. During each session, they rated their liking of the 5 variants. At the end of each of the 4 first sessions, consumers were given 16 biscuits for their home consumption during the week. Participants were split into 3 groups of exposure: every week, a control group received the standard variant, a âdirectâ group received the most reduced variant and a âstepwiseâ group received a more and more reduced variant. After both control and stepwise exposure, almost no evolution of liking was observed. At the end of the direct exposure period to the 33% fat-reduced variant, liking for this variant significantly improved. On the contrary, after the direct exposure to the 28% sugar-reduced variant, liking only improved for 9 and 16% sugar-reduced variants
Qualité et représentation nutritionnelles, perception sensorielle et acceptabilité des biscuits
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