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Probing in-mouth texture perception with a biomimetic tongue.

ABSTRACT: An experimental biomimetic tongue-palate system has been developed to probe human in-mouth texture perception. Model tongues are made from soft elastomers patterned with fibrillar structures analogous to human filiform papillae. The palate is represented by a rigid flat plate parallel to the plane of the tongue. To probe the behaviour under physiological flow conditions, deflections of model papillae are measured using a novel fluorescent imaging technique enabling sub-micrometre resolution of the displacements. Using optically transparent Newtonian liquids under steady shear flow, we show that deformations of the papillae allow their viscosity to be determined from 1 Pa s down to the viscosity of water (1 mPa s), in full quantitative agreement with a previously proposed model (Lauga et al. 2016 Front. Phys. 4, 35 (doi:10.3389/fphy.2016.00035)). The technique is further validated for a shear-thinning and optically opaque dairy system.

SUBMITTER: Thomazo JB

PROVIDER: S-EPMC6833334 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature

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Probing in-mouth texture perception with a biomimetic tongue.

Thomazo Jean-Baptiste JB Contreras Pastenes Javier J Pipe Christopher J CJ Le Révérend Benjamin B Wandersman Elie E Prevost Alexis M AM

Journal of the Royal Society, Interface 20191002 159

An experimental biomimetic tongue-palate system has been developed to probe human in-mouth texture perception. Model tongues are made from soft elastomers patterned with fibrillar structures analogous to human filiform papillae. The palate is represented by a rigid flat plate parallel to the plane of the tongue. To probe the behaviour under physiological flow conditions, deflections of model papillae are measured using a novel fluorescent imaging technique enabling sub-micrometre resolution of t ...[more]

PMID: 31575348

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