Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/31593

TitleEvaluation of healthy and sensory indexes of sweetened beverages using an electronic tongue
Author(s)Dias, Luís G.
Sequeira, Cédric
Veloso, Ana C. A.
Sousa, Mara E. B. C.
Peres, A. M.
KeywordsSugar sweetened beverages
Glycemic load
Fructose-intolerance index
Electronic tongue
Linear discriminant analysis
Simulated annealing algorithm
Issue date2014
PublisherElsevier
JournalAnalytica Chimica Acta
CitationDias, Luís G.; Sequeira, Cédric; Veloso, Ana C. A.; Sousa, Mara E. B. C.; Peres, António M., Evaluation of healthy and sensory indexes of sweetened beverages using an electronic tongue. Analytica Chimica Acta, 848, 32-42, 2014
Abstract(s)Overconsumption of sugar-sweetened beverages may increase the risk of health problems and so, the evaluation of their glycemic load and fructose-intolerance level is essential since it may allow establishing possible relations between physiologic effects of sugar-rich beverages and health. In this work, an electronic tongue was used to accurately classify beverages according to glycemic load (low, medium or high load) as well to their adequacy for people suffering from fructose malabsorption syndrome (tolerable or not): 100% of correct classifications (leave-one-out cross-validation) using linear discriminant models based on potentiomentric signals selected by a meta-heuristic simulated annealing algorithm. These results may be partially explained by the electronic tongue’s capability to mimic the human sweetness perception and total acid flavor of beverages, which can be related with glycemic load and fructose-intolerance index. Finally, the E-tongue was also applied to quantify, accurately, healthy and sensory indexes using multiple linear regression models (leave-one-out cross-validation: Radj > 0.99) in the following dynamic ranges: 4.7 < glycemic load ≤ 30; 0.4 < fructose intolerance index ≤ 1.5; 32 < sweetness perception < 155; 1.3 < total acid flavor, g L−1 < 8.3; and, 5.8 < well-balanced flavor ≤ 74. So, the proposed electronic tongue could be used as a practical, fast, low-cost and green tool for beverage’s healthy and sensory evaluation.
TypeArticle
URIhttp://hdl.handle.net/1822/31593
DOI10.1016/j.aca.2014.08.003
ISSN0003-2670
e-ISSN1873-4324
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

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