Abstract
The International Dysphagia Diet Standardization Initiative (IDDSI) flow test is useful for the global standardization of food consistencies of dysphagia patients. In clinical practice, different compositions of food thickeners are commonly used, directly influencing viscosity parameters and swallowing physiology. We aimed to compare the IDDSI thickness levels, remaining volume in the syringe (RVS), and viscosity parameters of three different food thickeners. As a secondary objective, we compared the cost of preparing 100 mL of thickened drinks using the studied thickeners. Thickeners A (xanthan gum), B (corn starch, tara gum, xanthan gum, and guar gum), and C (corn starch) were prepared in increasing concentrations from 1 to 7 g/100 mL and were assayed in quintuplicate using the IDDSI flow test. Thickeners A, B, and C presented statistically different results for the IDDSI levels, RVS, and viscosity parameters at all concentrations. Thickener A reached higher levels in the IDDSI framework, RVS, and viscosity parameters compared with thickeners B and C. A large range of RVS was observed at different concentrations for thickener B compared with C. Regarding viscosity, thickeners B and C, with corn starch in their composition, showed exponential behavior as concentrations increased, while thickener A presented a linear trend. The thickener composition was significantly influenced by IDDSI classification, RVS, and viscosity parameters. The study shows that xanthan gum thickeners present less variability in IDDSI, RVS, and viscosity compared with starch-based thickeners.
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Abbreviations
- IDDSI:
-
International dysphagia diet standardization initiative
- RVS:
-
Remaining volume in the syringe
- XG:
-
Xanthan gum
- ST:
-
Starch
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JVH, main author of the manuscript, conceptualization, and design, conducting the analysis and critical interpretation of the literature, writing original draft, editing and final review. HSAT, investigation, methodology, analysis, and interpretation of the literature, editing and final review of the manuscript; CM de S, investigation, conducting the methodology, supervision (supporting), analysis, and interpretation of the literature, editing and final review of the manuscript; JAA, investigation, methodology, analysis, editing and final review of the manuscript; F de SF, analysis, editing and final review of the manuscript; PGM, methodology, analysis, editing and final review of the manuscript; LFM, senior author, conceptualization, and design, conducting the analysis and critical interpretation of the literature, writing and final revision.
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Vergara, J., Teixeira, H.S., de Souza, C.M. et al. Flow test by the International Dysphagia Diet Standardization Initiative reveals distinct viscosity parameters of three thickening agents. J Food Sci Technol 59, 3627–3633 (2022). https://doi.org/10.1007/s13197-022-05369-5
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DOI: https://doi.org/10.1007/s13197-022-05369-5