Aplicación de la lengua electrónica en la evaluación de la capacidad antioxidante
作者： Elena Pérez Salinas
DOI:
关键词: ABTS 、 Voltammetry 、 Trolox 、 Ascorbic acid 、 Antioxidant capacity 、 Electronic tongue 、 Cyclic voltammetry 、 Pulse voltammetry 、 Chromatography 、 Chemistry
摘要: The aim of this work was establishing a mathematical prediction model through the application electronic tongue (pulse voltammetry) in order to assess antioxidant capacity food. For that purpose, firstly, trolox solutions (reference standard), as well samples tea and grape, were evaluated using method ABTS. Secondly, cyclic voltammetry tests conducted characterize presence antioxidants trolox, with purpose knowing electrochemical phenomena generated between electrodes these. Through characterization, pulse standard established subsequently applied on grape solutions. In generate predictive models can quantify capacity, statistical multivariate analysis main components (PCA) partial least squares (PLS) carried out. obtained results made creation valid mathematic for assessment possible basis equivalents. From all used, noble metals best adjustment (94%). Although non-noble showed directly proportional behaviour response juice concentration subjected test, such not related their capacity. Therefore, future studies will be aimed at evaluating which compounds correlation, quantification based equivalents ascorbic acid, phenological compounds, etc. PALABRAS CLAVE: Lengua electronica, voltametria, ABTS, uva, te.
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