Mechanical properties of foods used in experimental studies of primate masticatory function

Title

Mechanical properties of foods used in experimental studies of primate masticatory function

Creator

Williams S H; Wright B W; Den Truong V; Daubert C R; Vinyard C J

Publisher

American Journal of Primatology

Date

2005
2005-11

Description

In vivo studies, of jaw-muscle behavior have been integral factors in the development of our current understanding of the primate masticatory apparatus. However, even though it has been shown that food textures and mechanical properties influence jaw-muscle activity during mastication, very little effort has been made to quantify the relationship between the elicited masticatory responses of the subject and the mechanical proper-ties of the foods that are eaten. Recent work on human mastication highlights the importance of two mechanical properties-toughness and elastic modulus (i.e., stiffness)-for food breakdown during mastication. Here we provide data on the toughness and elastic modulus of the majority of foods used in experimental studies of the nonhuman primate masticatory apparatus. Food toughness ranges from approximately 56.97Jm(-2) (apple pulp) to 4355.45 Jm(-2) (prune pit). The elastic modulus of the experimental foods ranges from 0.07 MPa for gummy bears to 346 MPa for popcorn kernels. These data can help researchers studying primate mastication select among several potential foods with broadly similar mechanical properties. Moreover, they provide a framework for understanding how jaw-muscle activity varies with food mechanical properties in these studies.

Subject

biomechanical analysis; elastic modulus; etectromyography; fracture-toughness; fracture-toughness; genus cebus; jaw; lateral pterygoid muscle; macaca-fascicularis; mandibular symphysis; masseter force; mechanical properties; movement; old-world monkeys; periodontal mechanoreceptive afferents; Zoology

Identifier

Format

Journal Article

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Rights

Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).

Pages

329-346

Issue

3

Volume

67

Citation

Williams S H; Wright B W; Den Truong V; Daubert C R; Vinyard C J, “Mechanical properties of foods used in experimental studies of primate masticatory function,” NEOMED Bibliography Database, accessed May 15, 2021, https://neomed.omeka.net/items/show/7597.

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