000109472 001__ 109472
000109472 005__ 20230519145446.0
000109472 0247_ $$2doi$$a10.1186/s12877-021-02599-8
000109472 0248_ $$2sideral$$a125896
000109472 037__ $$aART-2021-125896
000109472 041__ $$aeng
000109472 100__ $$aCalmarza-Chueca, Fernando
000109472 245__ $$aInstitutionalized elderly are able to detect small viscosity variations in thickened water with gum-based thickeners: should texture classifications be reviewed?
000109472 260__ $$c2021
000109472 5060_ $$aAccess copy available to the general public$$fUnrestricted
000109472 5203_ $$aBackground: The prevalence of dysphagia is very high in institutionalized elderly. Knowledge of the rheological and sensory characteristics of the various thickeners in elderly is limited, although it has been seen that there are differences between the rheological behaviors of gum-based thickeners with different composition. Moreover, we have not found sensory studies of viscosity in institutionalized elderly. Our hypothesis was that viscosity ranges established by the scientific societies, such as the National Dysphagia Diet Task Force (NDD), seem to be very wide and individuals might be able to detect small differences within the same texture range. The objectives of our study were 1) comparing the rheological characteristics of two commercial gum-based thickeners with different composition, dissolved in water under standard conditions, and 2) perform a sensory analysis (with both adults and institutionalized elderly) to detect different viscosities within the same texture (nectar and honey). Methods: Two commercial thickeners based on gums (NC and RC) were studied analyzing their viscosity in water with different concentrations (shear rate: 50 s− 1; temperature: 22–25 °C). A sensory analysis involving 26 elderly and 29 adult controls was carried out to evaluate whether differences within nectar and honey textures among gum-based thickeners could be distinguished. Results: As the shear rate increases, viscosity decreases (non-Newtonian and pseudoplastic behavior). At the same concentration, each thickener produces a different viscosity (p < 0.05). Institutionalized elderly detected viscosity differences in nectar range of 49.9 (2.5) mPa·s (p < 0.05) and 102.2 (4.7) mPa·s (p < 0.0001). They also detected viscosity differences in honey texture range of 134.6 (9.7) mPa·s (p < 0.05) y 199.3 (9.2) mPa·s (p < 0.0001). Their caregivers also detected viscosity differences in both viscosity ranges (p < 0.0001) and with greater intensity than the elderly in honey texture (p: 0.016). Conclusions: Our results suggest that the accepted viscosity ranges by NDD for the different textures might be too wide because institutionalized elderly and their caregivers are able to discern small differences in viscosity in nectar and honey textures. Gum-based thickeners with different composition showed differences in viscosity capacity, so they are not interchangeable. © 2021, The Author(s).
000109472 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000109472 590__ $$a4.07$$b2021
000109472 592__ $$a1.153$$b2021
000109472 594__ $$a4.8$$b2021
000109472 591__ $$aGERONTOLOGY$$b10 / 37 = 0.27$$c2021$$dQ2$$eT1
000109472 593__ $$aGeriatrics and Gerontology$$c2021$$dQ1
000109472 591__ $$aGERIATRICS & GERONTOLOGY$$b28 / 54 = 0.519$$c2021$$dQ3$$eT2
000109472 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000109472 700__ $$0(orcid)0000-0002-5086-7839$$aSánchez-Gimeno, Ana Cristina$$uUniversidad de Zaragoza
000109472 700__ $$aPerez-Nogueras, Javier
000109472 700__ $$aCaverni-Muñoz, Alberto
000109472 700__ $$aSanz-Arque, Alejandro
000109472 700__ $$aArbones-Mainar, José Miguel
000109472 700__ $$0(orcid)0000-0002-7758-3588$$aSanz-Paris, Alejandro$$uUniversidad de Zaragoza
000109472 7102_ $$11007$$2610$$aUniversidad de Zaragoza$$bDpto. Medicina, Psiqu. y Derm.$$cArea Medicina
000109472 7102_ $$12008$$2780$$aUniversidad de Zaragoza$$bDpto. Produc.Animal Cienc.Ali.$$cÁrea Tecnología de Alimentos
000109472 773__ $$g21, 1 (2021), 647 [10 pp.]$$pBMC geriatr.$$tBMC geriatrics$$x1471-2318
000109472 8564_ $$s1211293$$uhttps://zaguan.unizar.es/record/109472/files/texto_completo.pdf$$yVersión publicada
000109472 8564_ $$s2374607$$uhttps://zaguan.unizar.es/record/109472/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000109472 909CO $$ooai:zaguan.unizar.es:109472$$particulos$$pdriver
000109472 951__ $$a2023-05-18-14:38:47
000109472 980__ $$aARTICLE