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Measurement of molten chocolate friction under simulated tongue-palate kinematics: effect of cocoa solids content and aeration

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Title: Measurement of molten chocolate friction under simulated tongue-palate kinematics: effect of cocoa solids content and aeration
Authors: Samaras, G
Bikos, D
Vieira, J
Hartmann, C
Charalambides, M
Hardalupas, Y
Masen, M
Cann, P
Item Type: Journal Article
Abstract: The perception of some food attributes is related to mechanical stimulation and friction experienced in the tongue-palate contact during mastication. This paper reports a new bench test to measure friction in the simulated tongue-palate contact. The test consists of a flat PDMS disk, representing the tongue loaded and reciprocating against a stationary lower glass surface representing the palate. The test was applied to molten chocolate samples with and without artificial saliva. Friction was measured over the first few rubbing cycles, simulating mechanical degradation of chocolate in the tongue-palate region. The effects of chocolate composition (cocoa solids content ranging between 28 ​wt% and 85 ​wt%) and structure (micro-aeration/non-aeration 0–15 ​vol%) were studied. The bench test clearly differentiates between the various chocolate samples. The coefficient of friction increases with cocoa solids percentage and decreases with increasing micro-aeration level. The presence of artificial saliva in the contact reduced the friction for all chocolate samples, however the relative ranking remained the same.
Issue Date: Nov-2020
Date of Acceptance: 1-Nov-2020
URI: http://hdl.handle.net/10044/1/85142
DOI: 10.1016/j.crfs.2020.10.002
ISSN: 2665-9271
Publisher: Elsevier BV
Start Page: 304
End Page: 313
Journal / Book Title: Current Research in Food Science
Volume: 3
Copyright Statement: © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/bync-nd/4.0/).
Publication Status: Published
Online Publication Date: 2020-11-30
Appears in Collections:Mechanical Engineering



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