Fully Automated Flow Injection Analyser for the Determination of Volatile Acidity in Wines
- M.D. Luque De Castro
- M. Urbano Cuadrado
- Miguel Ángel Gómez Nieto
ISSN: 0957-1264
Año de publicación: 2006
Volumen: 17
Número: 2
Páginas: 127-134
Tipo: Artículo
Otras publicaciones en: Journal of wine research
Resumen
A fully automated method based on both Flow Injection (FI) and analytical pervaporation for the determination of the volatile acidity in wine is here presented. Both the different hardware units that constitute the analyser and data collection are controlled by a computer. The method is based on pervaporation of the volatile compounds present in wine into an indicator solution and monitoring the absorbance change, which is correlated with the volatile acidity content. The control software was developed with Java, C and XML programming languages. The analysis frequency and the precision of the method were 10 samples per hour and 0.035 g l − 1, respectively. The validation of the method was carried out with respect to the Mathieu method. The proposed method correlates (r = 0.95) with the Mathieu method (the standard method in wineries).