Author(s): Nascimento, Andreia Santos do ; Silva, Fabiane de Lima ; Machado, Cerilene Santiago ; Silva, Samira Maria Peixoto Cavalcante ; Estevinho, Leticia M. ; Dias, L.G. ; Carvalho, Carlos Alfredo Lopes de
Date: 2020
Persistent ID: http://hdl.handle.net/10198/23436
Origin: Biblioteca Digital do IPB
Subject(s): Cluster analysis; E-tongue; PCA; Potentiometric signal; Sensors; Stingless bees
This study aimed to characterize honey of Melipona scutellaris regarding its physicochemical parameters using the electronic tongue (e-tongue) technique combined with the multivariate statistical analysis for honey differentiation. Physicochemical parameters were evaluated following official methods of chemical analyses. A potentiometric electronic tongue with 16 cross-sensitivity sensors was used for the analysis. The Principal Component Analysis and the Cluster Analysis distinguished two groups for the sample set in the evaluation of physicochemical parameters, similar to results found using the electronic tongue. We verified a correlation greater than 0.70 between the profile of potentiometric signals and values of pH, ashes, electrical conductivity, HMF, diastase activity, reducing sugars, and apparent sucrose. The combined use of the electronic tongue with the statistical analysis showed the similarity between samples through the formation of two groups of the sample set. The electronic tongue may be used as a complement to traditional techniques of analyses to determine honey physicochemical parameters, constituting a promising tool in association with the multivariate statistical analysis.
