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• W601451131 abstract "Human fat perception has recently triggered particular interest as it was shown that it does not only involve aroma and texture perception but also taste perception. The latter was supported by the presence of free fatty acids (FFA) taste receptors on the tongue. Recent studies have shown that fat taste sensitivity is variable among individuals. This inter-individual variation could be linked to genetic or environmental factors. However, saliva could also play a role in this perception. The role of saliva in taste perception is increasingly recognized. Saliva contains molecules able of interacting with fat such as lipase and lipocalin. It is also a complex fluid which contains a large diversity of proteins and metabolites. Its regulation is also complex and its composition may vary after a sensory stimulation. Indeed, studies have shown that when giving primary taste stimulations, the whole salivary proteome is modified. Thus, the first aim of the present work was to use both targeted (enzymatic activity, antioxidant capacity etc) and untargeted approaches (proteomics and metabolomics) to identify links between taste sensitivity to a fatty acid, oleic acid, and the salivary composition. The second aim was to investigate whether the salivary composition is modified after an oral stimulation by oleic acid.Two groups of thirteen male subjects (highly and weakly sensitive to the taste of oleic acid) were selected from an initial panel of 73 healthy participants. Their whole saliva was collected in two ways; the first without stimulation in order to study the links between oral sensitivity to oleic acid and saliva composition and the second using a stimulation by the same fatty acid in order to study potential modifications of saliva composition depending on sensitivity. Results show that salivary composition is linked to oral fatty acid perception. Markers previously reported as associated to taste perception were determined in the highly sensitive group (carbonic anhydrase, Zinc Alpha 2 glycoprotein and cystatins) while markers (organic acids) indicating a higher bacterial load were identified in weakly sensitive group. Furthermore, results obtained after stimulation by oleic acid suggest that saliva composition is modified, which confirms its dynamic nature. As different modifications were observed for the highly and weakly sensitive group, our results suggest that saliva is not only modified after a stimulation but also depending on the sensitivity to that particular stimulation." @default.
• W601451131 created "2016-06-24" @default.
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• W601451131 date "2013-12-19" @default.
• W601451131 modified "2023-09-23" @default.
• W601451131 title "Oral fat sensitivity in humans : links with salivary composition" @default.
• W601451131 hasPublicationYear "2013" @default.
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