Effect of shear thinning on aspiration - Toward making solutions for judging the risk of aspiration

K. Nishinari, M. Takemasa, L. Su, Y. Michiwaki, H. Mizunuma, H. Ogoshi

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Polysaccharide solutions containing a contrast medium were prepared so that their viscosity at 50s-1, which was reported as a shear rate in the oral cavity, is the same but different at other shear rates. Preparation procedure of such solutions based on heat treatment using widely used polysaccharides in foods is described, and the rheological properties of these solutions are discussed in relation with flow behaviours in the swallowing process. Videofluorographic observation was performed for healthy persons and patients and compared with rheological characteristics of these solutions to understand the mechanism of aspiration. It was shown that the degree of aspiration depended on the degree of shear thinning of polysaccharide solutions. This study showed the possibility to find what kind of fluid induces the aspiration and to reduce the risk of aspiration in dysphagic patients by controlling the food rheology.

Original languageEnglish
Pages (from-to)1737-1743
Number of pages7
JournalFood Hydrocolloids
Volume25
Issue number7
DOIs
Publication statusPublished - 2011 Oct
Externally publishedYes

Fingerprint

Shear thinning
shears
Polysaccharides
polysaccharides
Shear deformation
Contrast media
Food
Rheology
rheology
Deglutition
rheological properties
Viscosity
Contrast Media
Mouth
mouth
viscosity
Hot Temperature
Heat treatment
Observation
heat treatment

Keywords

  • Aspiration
  • Shear rate
  • Shear thinning
  • Videofluorography
  • Viscosity

ASJC Scopus subject areas

  • Food Science
  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Nishinari, K., Takemasa, M., Su, L., Michiwaki, Y., Mizunuma, H., & Ogoshi, H. (2011). Effect of shear thinning on aspiration - Toward making solutions for judging the risk of aspiration. Food Hydrocolloids, 25(7), 1737-1743. https://doi.org/10.1016/j.foodhyd.2011.03.016

Effect of shear thinning on aspiration - Toward making solutions for judging the risk of aspiration. / Nishinari, K.; Takemasa, M.; Su, L.; Michiwaki, Y.; Mizunuma, H.; Ogoshi, H.

In: Food Hydrocolloids, Vol. 25, No. 7, 10.2011, p. 1737-1743.

Research output: Contribution to journalArticle

Nishinari, K, Takemasa, M, Su, L, Michiwaki, Y, Mizunuma, H & Ogoshi, H 2011, 'Effect of shear thinning on aspiration - Toward making solutions for judging the risk of aspiration', Food Hydrocolloids, vol. 25, no. 7, pp. 1737-1743. https://doi.org/10.1016/j.foodhyd.2011.03.016
Nishinari, K. ; Takemasa, M. ; Su, L. ; Michiwaki, Y. ; Mizunuma, H. ; Ogoshi, H. / Effect of shear thinning on aspiration - Toward making solutions for judging the risk of aspiration. In: Food Hydrocolloids. 2011 ; Vol. 25, No. 7. pp. 1737-1743.
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