Fully Automated Flow Injection Analyser for the Determination of Volatile Acidity in Wines

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 per...

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Bibliographic Details
Published inJournal of wine research Vol. 17; no. 2; pp. 127 - 134
Main Authors Urbano Cuadrado, M., Luque De Castro, M.D., Gómez-Nieto, M.A.
Format Journal Article
LanguageEnglish
Published Oxfordshire Routledge 01.08.2006
Taylor & Francis Ltd
Subjects
Analysis
Automation
Wines
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Summary: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).
ISSN:0957-1264
1469-9672
DOI:10.1080/09571260601004419