Flavored yogurt complex viscosity influences real-time aroma release in the mouth and sensory properties |
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Authors: | Saint-Eve Anne Martin Nathalie Guillemin Hervé Sémon Etienne Guichard Elisabeth Souchon Isabelle |
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Institution: | Unité Mixte de Recherche de Génie et Microbiologie des Procédés Alimentaires, Institut National Agronomique Paris-Grignon-Institut National de la Recherche Agronomique, 78850 Thiverval-Grignon, France. |
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Abstract: | The influence of flavored yogurt texture on aroma perception and in-nose aroma release measured by atmospheric pressure chemical ionization mass spectrometry analysis was investigated. The study was carried out on six yogurts varied by protein composition and mechanical treatment. For the same matrix composition, the complex viscosity of yogurts influenced in-nose release and perception. After swallowing, aroma release and intensity of olfactory perception were stronger in low-viscosity yogurts than in high-viscosity yogurts. Moreover, the protein composition influenced aroma release only when yogurts exhibited wide variations of complex viscosity and consequently texture. In mouth, aroma release and perception were influenced more by yogurt mechanical treatment than by protein composition. On the basis of mass transfer analysis, the main physical mechanism which could explain the difference in aroma release would be the surface exchange area developed in the mouth and in the throat. |
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