RT info:eu-repo/semantics/article
T1 Array of biosensors for discrimination of grapes according to grape variety, vintage and ripeness.
A1 Rodríguez Méndez, María Luz
A1 Medina Plaza, Cristina
A1 Saja Sáez, José Antonio de
A1 Fernández Escudero, José Antonio
A1 Barajas Tola, Enrique
A1 Medrano, Germán
AB A bioelectronic tongue based on nanostructured biosensors specific for the simultaneous detection of sugars and phenols has been developed. The array combined oxidases and dehydrogenases immobilized on a lipidic layer prepared using the Langmuir-Blodgett technique where Glucose oxidase, d-Fructose dehydrogenase, Tyrosinase or Laccase were imbibed. A phthalocyanine was co-immobilized in the sensing layer and used as electron mediator. The array thus formed has been used to analyze grapes and provides global information about the samples while providing specific information about their phenolic and their sugar content. Using Principal Component Analysis (PCA) the array of voltammetric biosensors has been successfully used to discriminate musts prepared from different varieties of grapes (Tempranillo, Garnacha, Cabernet-Sauvignon, Prieto Picudo and Mencía). Differences could be also detected between grapes of the same variety and cultivar harvested in two successive vintages (2012 and 2013).
PB Universidad de Valladolid EII
YR 2016
FD 2016
LK http://uvadoc.uva.es/handle/10324/30564
UL http://uvadoc.uva.es/handle/10324/30564
LA spa
NO Analytica Chimica Acta 2016, vol.947 p. 16-22
DS UVaDOC
RD 22-dic-2024